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Chemistry Quiz - Class 11 Chemistry Some Basic Concepts o...

Question 1/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

रसायन विज्ञान में पदार्थ किसे कहते हैं?

In chemistry what is called matter?

Explanation opens after your attempt

Correct Answer

A. जिसका द्रव्यमान हो और स्थान घेरता होAnything that has mass and occupies space

Step 1

Concept

Matter has mass and occupies space. In exams remember this basic definition of matter.

Step 2

Why this answer is correct

The correct answer is A. जिसका द्रव्यमान हो और स्थान घेरता हो / Anything that has mass and occupies space. Matter has mass and occupies space. In exams remember this basic definition of matter.

Step 3

Exam Tip

पदार्थ में द्रव्यमान होता है और वह स्थान घेरता है। परीक्षा में matter की basic definition याद रखें।

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Question 2/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

निम्न में से पदार्थ का सही उदाहरण कौन सा है?

Which of the following is a correct example of matter?

Explanation opens after your attempt

Correct Answer

B. वायुAir

Step 1

Concept

Air has mass and occupies space. Sound and shadow are not matter.

Step 2

Why this answer is correct

The correct answer is B. वायु / Air. Air has mass and occupies space. Sound and shadow are not matter.

Step 3

Exam Tip

वायु का द्रव्यमान होता है और वह स्थान घेरती है। ध्वनि और छाया पदार्थ नहीं हैं।

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Question 3/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

कौन सी वस्तु पदार्थ नहीं मानी जाती?

Which item is not considered matter?

Explanation opens after your attempt

Correct Answer

C. प्रकाशLight

Step 1

Concept

Light is a form of energy and not space-occupying matter. Mass and volume are needed for matter.

Step 2

Why this answer is correct

The correct answer is C. प्रकाश / Light. Light is a form of energy and not space-occupying matter. Mass and volume are needed for matter.

Step 3

Exam Tip

प्रकाश ऊर्जा का रूप है और स्थान घेरने वाला पदार्थ नहीं है। पदार्थ के लिए mass और volume जरूरी हैं।

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Question 4/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

पदार्थ की पहचान के लिए कौन सी दो बातें जरूरी हैं?

Which two things are necessary to identify matter?

Explanation opens after your attempt

Correct Answer

D. द्रव्यमान और आयतनMass and volume

Step 1

Concept

Matter has mass and occupies volume. This is the most basic identification.

Step 2

Why this answer is correct

The correct answer is D. द्रव्यमान और आयतन / Mass and volume. Matter has mass and occupies volume. This is the most basic identification.

Step 3

Exam Tip

पदार्थ में द्रव्यमान होता है और वह आयतन घेरता है। यही सबसे basic पहचान है।

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Question 5/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

वायु को पदार्थ क्यों माना जाता है?

Why is air considered matter?

Explanation opens after your attempt

Correct Answer

A. क्योंकि उसका द्रव्यमान है और वह स्थान घेरती हैBecause it has mass and occupies space

Step 1

Concept

Air is matter even if it is not visible. Remember invisibility does not prove absence of matter.

Step 2

Why this answer is correct

The correct answer is A. क्योंकि उसका द्रव्यमान है और वह स्थान घेरती है / Because it has mass and occupies space. Air is matter even if it is not visible. Remember invisibility does not prove absence of matter.

Step 3

Exam Tip

वायु दिखाई न देने पर भी पदार्थ है। याद रखें invisible होना matter न होने का प्रमाण नहीं है।

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Question 6/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

पदार्थ की तीन सामान्य अवस्थाएँ कौन सी हैं?

What are the three common states of matter?

Explanation opens after your attempt

Correct Answer

A. ठोस द्रव और गैसSolid liquid and gas

Step 1

Concept

Solid liquid and gas are common states of matter. This classification is based on physical state.

Step 2

Why this answer is correct

The correct answer is A. ठोस द्रव और गैस / Solid liquid and gas. Solid liquid and gas are common states of matter. This classification is based on physical state.

Step 3

Exam Tip

ठोस द्रव और गैस पदार्थ की सामान्य अवस्थाएँ हैं। यह classification physical state पर आधारित है।

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Question 7/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

किस अवस्था में पदार्थ का निश्चित आकार और निश्चित आयतन होता है?

In which state does matter have definite shape and definite volume?

Explanation opens after your attempt

Correct Answer

B. ठोसSolid

Step 1

Concept

In solids particles are close and arranged. Therefore shape and volume are definite.

Step 2

Why this answer is correct

The correct answer is B. ठोस / Solid. In solids particles are close and arranged. Therefore shape and volume are definite.

Step 3

Exam Tip

ठोस में कण पास-पास और व्यवस्थित होते हैं। इसलिए उसका आकार और आयतन निश्चित होता है।

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Question 8/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

किस अवस्था में पदार्थ का निश्चित आयतन होता है पर आकार पात्र के अनुसार बदलता है?

Which state has definite volume but changes shape according to the container?

Explanation opens after your attempt

Correct Answer

C. द्रवLiquid

Step 1

Concept

A liquid has nearly definite volume but takes the shape of its container. This is a key property of liquids.

Step 2

Why this answer is correct

The correct answer is C. द्रव / Liquid. A liquid has nearly definite volume but takes the shape of its container. This is a key property of liquids.

Step 3

Exam Tip

द्रव का आयतन लगभग निश्चित होता है लेकिन आकार पात्र जैसा हो जाता है। यह liquids की key property है।

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Question 9/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

किस अवस्था में पदार्थ का न निश्चित आकार होता है और न निश्चित आयतन?

Which state has neither definite shape nor definite volume?

Explanation opens after your attempt

Correct Answer

D. गैसGas

Step 1

Concept

Gas fills the container completely. Therefore both its shape and volume depend on the container.

Step 2

Why this answer is correct

The correct answer is D. गैस / Gas. Gas fills the container completely. Therefore both its shape and volume depend on the container.

Step 3

Exam Tip

गैस पात्र को पूरी तरह भरती है। इसलिए उसका आकार और आयतन दोनों पात्र पर निर्भर करते हैं।

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Question 10/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

बर्फ पदार्थ की कौन सी अवस्था है?

Ice is which state of matter?

Explanation opens after your attempt

Correct Answer

A. ठोसSolid

Step 1

Concept

Ice is the solid state of water. A solid has definite shape.

Step 2

Why this answer is correct

The correct answer is A. ठोस / Solid. Ice is the solid state of water. A solid has definite shape.

Step 3

Exam Tip

बर्फ पानी की ठोस अवस्था है। ठोस पदार्थ का आकार निश्चित होता है।

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Question 11/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

भाप पदार्थ की कौन सी अवस्था है?

Steam is which state of matter?

Explanation opens after your attempt

Correct Answer

B. गैसGas

Step 1

Concept

Steam is the gaseous state of water. Shape and volume of gas depend on container.

Step 2

Why this answer is correct

The correct answer is B. गैस / Gas. Steam is the gaseous state of water. Shape and volume of gas depend on container.

Step 3

Exam Tip

भाप पानी की गैसीय अवस्था है। गैस का आकार और आयतन पात्र पर निर्भर करता है।

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Question 12/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

तरल पानी पदार्थ की कौन सी अवस्था है?

Liquid water is which state of matter?

Explanation opens after your attempt

Correct Answer

C. द्रवLiquid

Step 1

Concept

Liquid water is an example of liquid state. Its volume remains definite but shape changes.

Step 2

Why this answer is correct

The correct answer is C. द्रव / Liquid. Liquid water is an example of liquid state. Its volume remains definite but shape changes.

Step 3

Exam Tip

तरल पानी द्रव अवस्था का उदाहरण है। इसका आयतन निश्चित रहता है पर आकार बदलता है।

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Question 13/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

पदार्थ के कणों के बारे में सही कथन कौन सा है?

Which statement about particles of matter is correct?

Explanation opens after your attempt

Correct Answer

D. वे लगातार गति करते रहते हैंThey keep moving continuously

Step 1

Concept

Particles of matter move continuously. Their motion generally increases with temperature.

Step 2

Why this answer is correct

The correct answer is D. वे लगातार गति करते रहते हैं / They keep moving continuously. Particles of matter move continuously. Their motion generally increases with temperature.

Step 3

Exam Tip

पदार्थ के कण लगातार गति करते हैं। ताप बढ़ने पर यह गति सामान्यतः बढ़ती है।

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Question 14/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

पदार्थ के कणों के बीच क्या होता है?

What exists between particles of matter?

Explanation opens after your attempt

Correct Answer

A. खाली स्थानEmpty space

Step 1

Concept

There is empty space between particles. This explains phenomena like diffusion and compression.

Step 2

Why this answer is correct

The correct answer is A. खाली स्थान / Empty space. There is empty space between particles. This explains phenomena like diffusion and compression.

Step 3

Exam Tip

कणों के बीच खाली स्थान होता है। इसी कारण diffusion और compression जैसी घटनाएँ समझ आती हैं।

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Question 15/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

कणों के बीच आकर्षण बल किस अवस्था में सामान्यतः सबसे अधिक होता है?

In which state is interparticle attraction generally highest?

Explanation opens after your attempt

Correct Answer

B. ठोसSolid

Step 1

Concept

In solids particles are very close. Therefore attraction between them is strong.

Step 2

Why this answer is correct

The correct answer is B. ठोस / Solid. In solids particles are very close. Therefore attraction between them is strong.

Step 3

Exam Tip

ठोस में कण बहुत पास होते हैं। इसलिए उनके बीच आकर्षण बल अधिक होता है।

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Question 16/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

कणों के बीच दूरी किस अवस्था में सामान्यतः सबसे अधिक होती है?

In which state is distance between particles generally maximum?

Explanation opens after your attempt

Correct Answer

C. गैसGas

Step 1

Concept

In gases particles are far apart. Therefore gases can be compressed easily.

Step 2

Why this answer is correct

The correct answer is C. गैस / Gas. In gases particles are far apart. Therefore gases can be compressed easily.

Step 3

Exam Tip

गैस में कण बहुत दूर-दूर होते हैं। इसलिए gases आसानी से compress हो सकती हैं।

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Question 17/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

ठोस को compress करना कठिन क्यों होता है?

Why is it difficult to compress a solid?

Explanation opens after your attempt

Correct Answer

D. क्योंकि उसके कण बहुत पास-पास होते हैंBecause its particles are very close

Step 1

Concept

In solids there is very little empty space between particles. Therefore compression is difficult.

Step 2

Why this answer is correct

The correct answer is D. क्योंकि उसके कण बहुत पास-पास होते हैं / Because its particles are very close. In solids there is very little empty space between particles. Therefore compression is difficult.

Step 3

Exam Tip

ठोस में कणों के बीच खाली स्थान बहुत कम होता है। इसलिए compression कठिन होता है।

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Question 18/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

गैस को compress करना अपेक्षाकृत आसान क्यों होता है?

Why is it relatively easy to compress a gas?

Explanation opens after your attempt

Correct Answer

A. क्योंकि कणों के बीच बहुत खाली स्थान होता हैBecause there is large empty space between particles

Step 1

Concept

In gas particles are very far apart. Compression reduces this empty space.

Step 2

Why this answer is correct

The correct answer is A. क्योंकि कणों के बीच बहुत खाली स्थान होता है / Because there is large empty space between particles. In gas particles are very far apart. Compression reduces this empty space.

Step 3

Exam Tip

गैस में कणों के बीच दूरी बहुत अधिक होती है। compression में यही खाली स्थान कम होता है।

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Question 19/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

गंध का कमरे में फैलना किस घटना का उदाहरण है?

Spreading of smell in a room is an example of which phenomenon?

Explanation opens after your attempt

Correct Answer

B. विसरणDiffusion

Step 1

Concept

In diffusion particles spread on their own. Diffusion is fast in gases.

Step 2

Why this answer is correct

The correct answer is B. विसरण / Diffusion. In diffusion particles spread on their own. Diffusion is fast in gases.

Step 3

Exam Tip

विसरण में कण अपने आप फैलते हैं। गैसों में diffusion तेज होता है।

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Question 20/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

स्याही का पानी में फैलना क्या दिखाता है?

What does ink spreading in water show?

Explanation opens after your attempt

Correct Answer

A. पदार्थ के कण गति करते हैंParticles of matter move

Step 1

Concept

Ink particles spread in water. This shows particle motion and diffusion.

Step 2

Why this answer is correct

The correct answer is A. पदार्थ के कण गति करते हैं / Particles of matter move. Ink particles spread in water. This shows particle motion and diffusion.

Step 3

Exam Tip

स्याही के कण पानी में फैलते हैं। इससे कणों की गति और diffusion का पता चलता है।

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Question 21/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

ताप बढ़ाने पर पदार्थ के कणों की गति सामान्यतः कैसी होती है?

What generally happens to particle motion when temperature increases?

Explanation opens after your attempt

Correct Answer

B. बढ़ती हैIncreases

Step 1

Concept

With increase in temperature kinetic energy increases. Therefore particles move faster.

Step 2

Why this answer is correct

The correct answer is B. बढ़ती है / Increases. With increase in temperature kinetic energy increases. Therefore particles move faster.

Step 3

Exam Tip

ताप बढ़ने से kinetic energy बढ़ती है। इसलिए कणों की गति तेज हो जाती है।

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Question 22/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

गर्म पानी में चीनी जल्दी घुलना किस बात से जुड़ा है?

Sugar dissolving faster in hot water is related to what?

Explanation opens after your attempt

Correct Answer

A. कणों की तेज गतिFaster motion of particles

Step 1

Concept

Particles move faster in hot water. This can speed up the dissolving process.

Step 2

Why this answer is correct

The correct answer is A. कणों की तेज गति / Faster motion of particles. Particles move faster in hot water. This can speed up the dissolving process.

Step 3

Exam Tip

गर्म पानी में कण तेजी से चलते हैं। इससे dissolving process तेज हो सकती है।

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Question 23/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

पदार्थ का भौतिक वर्गीकरण किस आधार पर किया जाता है?

Physical classification of matter is done on which basis?

Explanation opens after your attempt

Correct Answer

B. अवस्थाState

Step 1

Concept

In physical classification matter is divided into solid liquid and gas. It is based on state.

Step 2

Why this answer is correct

The correct answer is B. अवस्था / State. In physical classification matter is divided into solid liquid and gas. It is based on state.

Step 3

Exam Tip

भौतिक वर्गीकरण में पदार्थ को ठोस द्रव और गैस में बाँटा जाता है। यह अवस्था पर आधारित है।

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Question 24/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

पदार्थ का रासायनिक वर्गीकरण किस आधार पर किया जाता है?

Chemical classification of matter is done on which basis?

Explanation opens after your attempt

Correct Answer

C. संयोजनComposition

Step 1

Concept

Chemical classification is based on composition. It includes pure substances and mixtures.

Step 2

Why this answer is correct

The correct answer is C. संयोजन / Composition. Chemical classification is based on composition. It includes pure substances and mixtures.

Step 3

Exam Tip

रासायनिक वर्गीकरण composition पर आधारित होता है। इसमें pure substances और mixtures शामिल हैं।

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Question 25/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

रासायनिक वर्गीकरण में पदार्थ को मुख्यतः किन दो भागों में बाँटा जाता है?

In chemical classification matter is mainly divided into which two parts?

Explanation opens after your attempt

Correct Answer

D. शुद्ध पदार्थ और मिश्रणPure substance and mixture

Step 1

Concept

On the basis of composition matter is divided into pure substance and mixture. This is basic classification.

Step 2

Why this answer is correct

The correct answer is D. शुद्ध पदार्थ और मिश्रण / Pure substance and mixture. On the basis of composition matter is divided into pure substance and mixture. This is basic classification.

Step 3

Exam Tip

Composition के आधार पर पदार्थ pure substance और mixture में बाँटा जाता है। यह basic classification है।

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Question 26/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

शुद्ध पदार्थ की मुख्य विशेषता क्या है?

What is the main characteristic of a pure substance?

Explanation opens after your attempt

Correct Answer

A. निश्चित संरचना होनाHaving fixed composition

Step 1

Concept

A pure substance has fixed composition. For example pure water has fixed composition.

Step 2

Why this answer is correct

The correct answer is A. निश्चित संरचना होना / Having fixed composition. A pure substance has fixed composition. For example pure water has fixed composition.

Step 3

Exam Tip

शुद्ध पदार्थ की composition निश्चित होती है। उदाहरण के लिए pure water की composition fixed होती है।

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Question 27/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

मिश्रण की मुख्य विशेषता क्या है?

What is the main characteristic of a mixture?

Explanation opens after your attempt

Correct Answer

B. दो या अधिक पदार्थों का भौतिक रूप से मिला होनाPhysical combination of two or more substances

Step 1

Concept

In a mixture components are physically combined. Their proportion can vary.

Step 2

Why this answer is correct

The correct answer is B. दो या अधिक पदार्थों का भौतिक रूप से मिला होना / Physical combination of two or more substances. In a mixture components are physically combined. Their proportion can vary.

Step 3

Exam Tip

मिश्रण में components भौतिक रूप से मिले होते हैं। उनका अनुपात बदल सकता है।

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Question 28/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

कौन सा उदाहरण शुद्ध पदार्थ का है?

Which is an example of a pure substance?

Explanation opens after your attempt

Correct Answer

C. शुद्ध तांबाPure copper

Step 1

Concept

Pure copper is an element and has fixed composition. Air and soil are mixtures.

Step 2

Why this answer is correct

The correct answer is C. शुद्ध तांबा / Pure copper. Pure copper is an element and has fixed composition. Air and soil are mixtures.

Step 3

Exam Tip

शुद्ध तांबा एक element है और उसकी composition निश्चित है। हवा और मिट्टी mixtures हैं।

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Question 29/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

कौन सा उदाहरण मिश्रण का है?

Which is an example of a mixture?

Explanation opens after your attempt

Correct Answer

D. वायुAir

Step 1

Concept

Air is a mixture of several gases. In a mixture the proportion of components can vary.

Step 2

Why this answer is correct

The correct answer is D. वायु / Air. Air is a mixture of several gases. In a mixture the proportion of components can vary.

Step 3

Exam Tip

वायु कई gases का मिश्रण है। मिश्रण में components का अनुपात बदल सकता है।

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Question 30/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

तत्व किसे कहते हैं?

What is an element?

Explanation opens after your attempt

Correct Answer

A. ऐसा शुद्ध पदार्थ जो सामान्य रासायनिक तरीकों से सरल पदार्थों में न टूटेA pure substance that cannot be broken into simpler substances by ordinary chemical methods

Step 1

Concept

An element contains one type of atoms. It cannot be broken into simpler substances by ordinary chemical methods.

Step 2

Why this answer is correct

The correct answer is A. ऐसा शुद्ध पदार्थ जो सामान्य रासायनिक तरीकों से सरल पदार्थों में न टूटे / A pure substance that cannot be broken into simpler substances by ordinary chemical methods. An element contains one type of atoms. It cannot be broken into simpler substances by ordinary chemical methods.

Step 3

Exam Tip

तत्व में एक ही प्रकार के atoms होते हैं। इसे सामान्य chemical methods से सरल पदार्थ में नहीं तोड़ा जा सकता।

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Question 31/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

कौन सा पदार्थ तत्व है?

Which substance is an element?

Explanation opens after your attempt

Correct Answer

B. ऑक्सीजनOxygen

Step 1

Concept

Oxygen is an element. Water is a compound and salt solution is a mixture.

Step 2

Why this answer is correct

The correct answer is B. ऑक्सीजन / Oxygen. Oxygen is an element. Water is a compound and salt solution is a mixture.

Step 3

Exam Tip

ऑक्सीजन एक तत्व है। पानी compound है और नमक घोल mixture है।

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Question 32/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

यौगिक किसे कहते हैं?

What is a compound?

Explanation opens after your attempt

Correct Answer

C. दो या अधिक तत्वों का निश्चित अनुपात में रासायनिक संयोजनChemical combination of two or more elements in fixed ratio

Step 1

Concept

In a compound elements are chemically combined in fixed ratio. Its composition is fixed.

Step 2

Why this answer is correct

The correct answer is C. दो या अधिक तत्वों का निश्चित अनुपात में रासायनिक संयोजन / Chemical combination of two or more elements in fixed ratio. In a compound elements are chemically combined in fixed ratio. Its composition is fixed.

Step 3

Exam Tip

यौगिक में elements निश्चित अनुपात में chemically combined होते हैं। इसका composition fixed होता है।

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Question 33/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

निम्न में से कौन सा यौगिक है?

Which of the following is a compound?

Explanation opens after your attempt

Correct Answer

D. पानीWater

Step 1

Concept

Water is a compound of hydrogen and oxygen. Its composition remains fixed.

Step 2

Why this answer is correct

The correct answer is D. पानी / Water. Water is a compound of hydrogen and oxygen. Its composition remains fixed.

Step 3

Exam Tip

पानी hydrogen और oxygen का compound है। इसका composition fixed रहता है।

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Question 34/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

मिश्रण और यौगिक में मुख्य अंतर क्या है?

What is the main difference between a mixture and a compound?

Explanation opens after your attempt

Correct Answer

A. मिश्रण भौतिक संयोजन है और यौगिक रासायनिक संयोजन हैMixture is physical combination and compound is chemical combination

Step 1

Concept

In a mixture substances are physically mixed. In a compound elements are chemically combined in fixed ratio.

Step 2

Why this answer is correct

The correct answer is A. मिश्रण भौतिक संयोजन है और यौगिक रासायनिक संयोजन है / Mixture is physical combination and compound is chemical combination. In a mixture substances are physically mixed. In a compound elements are chemically combined in fixed ratio.

Step 3

Exam Tip

मिश्रण में substances physically mixed होते हैं। यौगिक में elements chemically fixed ratio में जुड़े होते हैं।

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Question 35/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

समांगी मिश्रण की मुख्य विशेषता क्या है?

What is the main characteristic of a homogeneous mixture?

Explanation opens after your attempt

Correct Answer

A. समान संरचना पूरी मात्रा मेंUniform composition throughout

Step 1

Concept

A homogeneous mixture looks uniform throughout. Salt water is a simple example.

Step 2

Why this answer is correct

The correct answer is A. समान संरचना पूरी मात्रा में / Uniform composition throughout. A homogeneous mixture looks uniform throughout. Salt water is a simple example.

Step 3

Exam Tip

समांगी मिश्रण हर भाग में समान दिखता है। नमक का पानी इसका सरल उदाहरण है।

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Question 36/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

विषमांगी मिश्रण की मुख्य विशेषता क्या है?

What is the main characteristic of a heterogeneous mixture?

Explanation opens after your attempt

Correct Answer

B. अलग-अलग भागों में अलग composition होनाHaving different composition in different parts

Step 1

Concept

In a heterogeneous mixture composition is not uniform throughout. Sand and water is an example.

Step 2

Why this answer is correct

The correct answer is B. अलग-अलग भागों में अलग composition होना / Having different composition in different parts. In a heterogeneous mixture composition is not uniform throughout. Sand and water is an example.

Step 3

Exam Tip

विषमांगी मिश्रण में composition हर जगह समान नहीं होता। रेत और पानी इसका उदाहरण है।

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Question 37/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

नमक का पानी किस प्रकार का मिश्रण है?

Salt water is which type of mixture?

Explanation opens after your attempt

Correct Answer

C. समांगी मिश्रणHomogeneous mixture

Step 1

Concept

Salt dissolves uniformly in water. Therefore salt water is a homogeneous mixture.

Step 2

Why this answer is correct

The correct answer is C. समांगी मिश्रण / Homogeneous mixture. Salt dissolves uniformly in water. Therefore salt water is a homogeneous mixture.

Step 3

Exam Tip

नमक पानी में समान रूप से घुल जाता है। इसलिए नमक का पानी homogeneous mixture है।

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Question 38/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

रेत और पानी का मिश्रण कैसा है?

What type of mixture is sand and water?

Explanation opens after your attempt

Correct Answer

D. विषमांगी मिश्रणHeterogeneous mixture

Step 1

Concept

Sand does not dissolve uniformly in water. Therefore it is a heterogeneous mixture.

Step 2

Why this answer is correct

The correct answer is D. विषमांगी मिश्रण / Heterogeneous mixture. Sand does not dissolve uniformly in water. Therefore it is a heterogeneous mixture.

Step 3

Exam Tip

रेत पानी में समान रूप से नहीं घुलती। इसलिए यह heterogeneous mixture है।

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Question 39/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

शक्कर का जल में घोल किस प्रकार का मिश्रण है?

Sugar solution in water is which type of mixture?

Explanation opens after your attempt

Correct Answer

A. समांगी मिश्रणHomogeneous mixture

Step 1

Concept

Sugar dissolves uniformly in water. Therefore a solution is a homogeneous mixture.

Step 2

Why this answer is correct

The correct answer is A. समांगी मिश्रण / Homogeneous mixture. Sugar dissolves uniformly in water. Therefore a solution is a homogeneous mixture.

Step 3

Exam Tip

शक्कर पानी में समान रूप से घुल जाती है। इसलिए solution homogeneous mixture होता है।

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Question 40/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

दूध को सामान्य स्कूल स्तर पर किस प्रकार माना जाता है?

At general school level milk is considered what type of matter?

Explanation opens after your attempt

Correct Answer

B. मिश्रणMixture

Step 1

Concept

Milk is a mixture of many substances. In exams do not treat it as a pure substance.

Step 2

Why this answer is correct

The correct answer is B. मिश्रण / Mixture. Milk is a mixture of many substances. In exams do not treat it as a pure substance.

Step 3

Exam Tip

दूध कई पदार्थों का mixture है। परीक्षा में इसे pure substance न मानें।

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Question 41/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

चीनी किस प्रकार का पदार्थ है?

Sugar is what type of matter?

Explanation opens after your attempt

Correct Answer

C. यौगिकCompound

Step 1

Concept

Sugar is a compound because it has definite composition. It is not just a physical mixture.

Step 2

Why this answer is correct

The correct answer is C. यौगिक / Compound. Sugar is a compound because it has definite composition. It is not just a physical mixture.

Step 3

Exam Tip

चीनी एक compound है क्योंकि इसकी composition definite होती है। यह केवल physical mixture नहीं है।

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Question 42/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

लोहा किस प्रकार का शुद्ध पदार्थ है?

Iron is which type of pure substance?

Explanation opens after your attempt

Correct Answer

D. तत्वElement

Step 1

Concept

Iron is an element. It contains iron atoms.

Step 2

Why this answer is correct

The correct answer is D. तत्व / Element. Iron is an element. It contains iron atoms.

Step 3

Exam Tip

लोहा एक element है। इसमें iron atoms पाए जाते हैं।

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Question 43/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

निम्न में से कौन ऊर्जा है पदार्थ नहीं?

Which of the following is energy and not matter?

Explanation opens after your attempt

Correct Answer

A. ऊष्माHeat

Step 1

Concept

Heat is a form of energy. It is not considered to have mass and volume like matter.

Step 2

Why this answer is correct

The correct answer is A. ऊष्मा / Heat. Heat is a form of energy. It is not considered to have mass and volume like matter.

Step 3

Exam Tip

ऊष्मा ऊर्जा का रूप है। इसका द्रव्यमान और आयतन पदार्थ की तरह नहीं माना जाता।

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Question 44/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

कौन सा पदार्थ निश्चित composition रखता है?

Which type of matter has fixed composition?

Explanation opens after your attempt

Correct Answer

B. शुद्ध पदार्थPure substance

Step 1

Concept

A pure substance has fixed composition. Composition of a mixture can vary.

Step 2

Why this answer is correct

The correct answer is B. शुद्ध पदार्थ / Pure substance. A pure substance has fixed composition. Composition of a mixture can vary.

Step 3

Exam Tip

शुद्ध पदार्थ की composition निश्चित होती है। mixture की composition बदल सकती है।

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Question 45/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

मिश्रण में components को सामान्यतः कैसे अलग किया जा सकता है?

How can components of a mixture generally be separated?

Explanation opens after your attempt

Correct Answer

C. भौतिक विधियों सेBy physical methods

Step 1

Concept

Components of mixtures can be separated by physical methods. Examples are filtration or distillation.

Step 2

Why this answer is correct

The correct answer is C. भौतिक विधियों से / By physical methods. Components of mixtures can be separated by physical methods. Examples are filtration or distillation.

Step 3

Exam Tip

मिश्रण के components physical methods से अलग किए जा सकते हैं। जैसे filtration या distillation।

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Question 46/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

यौगिक के components को अलग करने के लिए सामान्यतः क्या चाहिए?

What is generally needed to separate components of a compound?

Explanation opens after your attempt

Correct Answer

D. रासायनिक विधिChemical method

Step 1

Concept

In a compound elements are joined by chemical bonds. Therefore chemical method is needed for separation.

Step 2

Why this answer is correct

The correct answer is D. रासायनिक विधि / Chemical method. In a compound elements are joined by chemical bonds. Therefore chemical method is needed for separation.

Step 3

Exam Tip

यौगिक में elements chemical bonds से जुड़े होते हैं। इसलिए separation के लिए chemical method चाहिए।

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Question 47/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

शुद्ध पानी की composition कैसी होती है?

What is the composition of pure water like?

Explanation opens after your attempt

Correct Answer

A. निश्चितFixed

Step 1

Concept

Pure water has fixed composition. Therefore it is considered a compound.

Step 2

Why this answer is correct

The correct answer is A. निश्चित / Fixed. Pure water has fixed composition. Therefore it is considered a compound.

Step 3

Exam Tip

Pure water की composition fixed होती है। इसी कारण यह compound माना जाता है।

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Question 48/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

किस पदार्थ में components का अनुपात बदल सकता है?

In which type of matter can the proportion of components vary?

Explanation opens after your attempt

Correct Answer

B. मिश्रणMixture

Step 1

Concept

The ratio of components in a mixture need not be fixed. Therefore composition of air can vary with place.

Step 2

Why this answer is correct

The correct answer is B. मिश्रण / Mixture. The ratio of components in a mixture need not be fixed. Therefore composition of air can vary with place.

Step 3

Exam Tip

मिश्रण में components का ratio fixed होना जरूरी नहीं है। इसलिए हवा की composition स्थान के अनुसार बदल सकती है।

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Question 49/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

कौन सा कथन तत्व के लिए सही है?

Which statement is correct for an element?

Explanation opens after your attempt

Correct Answer

C. इसमें एक ही प्रकार के atoms होते हैंIt contains one type of atoms

Step 1

Concept

An element contains one type of atoms. It is the simplest pure substance.

Step 2

Why this answer is correct

The correct answer is C. इसमें एक ही प्रकार के atoms होते हैं / It contains one type of atoms. An element contains one type of atoms. It is the simplest pure substance.

Step 3

Exam Tip

तत्व में एक ही प्रकार के atoms पाए जाते हैं। यह simplest pure substance है।

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Question 50/50 Easy Chemistry Some Basic Concepts of Chemistry Nature of matter Class 11 Level 1

Level 1 Nature of matter का सबसे अच्छा summary कौन सा है?

Which is the best summary of Level 1 Nature of matter?

Explanation opens after your attempt

Correct Answer

D. पदार्थ mass और space रखता है और state तथा composition से classify होता हैMatter has mass and space and is classified by state and composition

Step 1

Concept

Matter is classified on physical and chemical basis. Remember definition and examples.

Step 2

Why this answer is correct

The correct answer is D. पदार्थ mass और space रखता है और state तथा composition से classify होता है / Matter has mass and space and is classified by state and composition. Matter is classified on physical and chemical basis. Remember definition and examples.

Step 3

Exam Tip

पदार्थ को physical और chemical basis पर classify किया जाता है। Definition और examples जरूर याद रखें।

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Class 11 Chemistry - Some Basic Concepts of Chemistry - Nature of matter Easy Quiz

रसायन विज्ञान में पदार्थ किसे कहते हैं?

Concept

Why this answer is correct

Exam Tip

निम्न में से पदार्थ का सही उदाहरण कौन सा है?

Concept

Why this answer is correct

Exam Tip

कौन सी वस्तु पदार्थ नहीं मानी जाती?

Concept

Why this answer is correct

Exam Tip

पदार्थ की पहचान के लिए कौन सी दो बातें जरूरी हैं?

Concept

Why this answer is correct

Exam Tip

वायु को पदार्थ क्यों माना जाता है?

Concept

Why this answer is correct

Exam Tip

पदार्थ की तीन सामान्य अवस्थाएँ कौन सी हैं?

Concept

Why this answer is correct

Exam Tip

किस अवस्था में पदार्थ का निश्चित आकार और निश्चित आयतन होता है?

Concept

Why this answer is correct

Exam Tip

किस अवस्था में पदार्थ का निश्चित आयतन होता है पर आकार पात्र के अनुसार बदलता है?

Concept

Why this answer is correct

Exam Tip

किस अवस्था में पदार्थ का न निश्चित आकार होता है और न निश्चित आयतन?

Concept

Why this answer is correct

Exam Tip

बर्फ पदार्थ की कौन सी अवस्था है?

Concept

Why this answer is correct

Exam Tip

भाप पदार्थ की कौन सी अवस्था है?

Concept

Why this answer is correct

Exam Tip

तरल पानी पदार्थ की कौन सी अवस्था है?

Concept

Why this answer is correct

Exam Tip

पदार्थ के कणों के बारे में सही कथन कौन सा है?

Concept

Why this answer is correct

Exam Tip

पदार्थ के कणों के बीच क्या होता है?

Concept

Why this answer is correct

Exam Tip

कणों के बीच आकर्षण बल किस अवस्था में सामान्यतः सबसे अधिक होता है?

Concept

Why this answer is correct

Exam Tip

कणों के बीच दूरी किस अवस्था में सामान्यतः सबसे अधिक होती है?

Concept

Why this answer is correct

Exam Tip

ठोस को compress करना कठिन क्यों होता है?

Concept

Why this answer is correct

Exam Tip

गैस को compress करना अपेक्षाकृत आसान क्यों होता है?

Concept

Why this answer is correct

Exam Tip

गंध का कमरे में फैलना किस घटना का उदाहरण है?

Concept

Why this answer is correct

Exam Tip

स्याही का पानी में फैलना क्या दिखाता है?

Concept

Why this answer is correct