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16 results found for "clean room" in Class 10.

Question Expert Mathematics Quadratic Equations Word Problems and Applications Class 10 Level 41

एक आयताकार कमरे की लंबाई चौड़ाई से (4 m) अधिक है। फर्श का क्षेत्रफल \(96 m^2\) है। कमरे की परिधि क्या है?

The length of a rectangular room is (4 m) more than its breadth. The floor area is (96 m\(^2). What is the perimeter of the room\)?

Explanation opens after your attempt
Correct Answer

B. (40 m)

Step 1

Concept

\(Let breadth be (x), then (x(x+4)=96), so (x=8) and length is (12). The perimeter is (2(8+12)=40\) m).

Step 2

Why this answer is correct

The correct answer is B. (40 m\(). Let breadth be (x), then (x(x+4)=96), so (x=8) and length is (12). The perimeter is (2(8+12)=40\) m).

Step 3

Exam Tip

चौड़ाई (x) हो, तो (x(x+4)=96), इसलिए (x=8) और लंबाई (12) है। \(परिधि (2(8+12)=40\) m) है।

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Question Medium Mathematics Quadratic Equations Word Problems and Applications Class 10 Level 41

एक आयताकार कमरे का क्षेत्रफल (432) है और लंबाई चौड़ाई से (6) अधिक है। कमरे की चौड़ाई क्या है?

A rectangular room has area (432) and length (6) more than breadth. What is the breadth of the room?

Explanation opens after your attempt
Correct Answer

A. (18)

Step 1

Concept

If the breadth is (x), then (x(x+6)=432). This gives (x=18).

Step 2

Why this answer is correct

The correct answer is A. (18). If the breadth is (x), then (x(x+6)=432). This gives (x=18).

Step 3

Exam Tip

यदि चौड़ाई (x) है, तो (x(x+6)=432)। इससे (x=18) मिलता है।

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Question Medium Mathematics Quadratic Equations Word Problems and Applications Class 10 Level 40

एक आयताकार कमरे का क्षेत्रफल (300) है और लंबाई चौड़ाई से (10) अधिक है। कमरे की चौड़ाई क्या है?

A rectangular room has area (300) and length (10) more than breadth. What is the breadth of the room?

Explanation opens after your attempt
Correct Answer

A. (15)

Step 1

Concept

If the breadth is (x), then (x(x+10)=300). This gives (x=15).

Step 2

Why this answer is correct

The correct answer is A. (15). If the breadth is (x), then (x(x+10)=300). This gives (x=15).

Step 3

Exam Tip

यदि चौड़ाई (x) है, तो (x(x+10)=300)। इससे (x=15) मिलता है।

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Question Expert Mathematics Quadratic Equations Word Problems and Applications Class 10 Level 41

एक छात्रावास में (60) छात्रों के लिए कमरे हैं। यदि प्रत्येक कमरे में (2) छात्र अधिक रखे जाएँ, तो (5) कमरे कम चाहिए। मूल रूप से प्रत्येक कमरे में कितने छात्र रखे गए थे?

A hostel has rooms for (60) students. If (2) more students are put in each room, (5) fewer rooms are needed. How many students were originally put in each room?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

Let students per room be (x), then \(\frac{60}{x}-\frac{60}{x+2}=5\). This gives \(5x^2+10x-120=0\), so (x=4).

Step 2

Why this answer is correct

The correct answer is A. (4). Let students per room be (x), then \(\frac{60}{x}-\frac{60}{x+2}=5\). This gives \(5x^2+10x-120=0\), so (x=4).

Step 3

Exam Tip

प्रति कमरा (x) छात्र हों, तो \(\frac{60}{x}-\frac{60}{x+2}=5\)। इससे \(5x^2+10x-120=0\), इसलिए (x=4)।

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Question Easy Mathematics Quadratic Equations Word Problems and Applications Class 10 Level 41

एक आयताकार कमरा लंबाई में चौड़ाई से (14) मीटर अधिक है और क्षेत्रफल (480) वर्ग मीटर है। चौड़ाई क्या है?

A rectangular room has length (14) m more than its breadth and area (480) square m. What is its breadth?

Explanation opens after your attempt
Correct Answer

B. (20) मीटर(20) m

Step 1

Concept

If breadth is (x), then (x(x+14)=480), giving (x=20). For area, multiply both dimensions.

Step 2

Why this answer is correct

The correct answer is B. (20) मीटर / (20) m. If breadth is (x), then (x(x+14)=480), giving (x=20). For area, multiply both dimensions.

Step 3

Exam Tip

चौड़ाई (x) हो तो (x(x+14)=480), जिससे (x=20) है। क्षेत्रफल में दोनों आयामों को गुणा करें।

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Question Expert Art Education Fundamentals of Visual Arts Line Class 10 Level 9

रेखा आधारित मूल्यांकन में साफ रेखा हमेशा अच्छी क्यों नहीं मानी जाती?

Why is a clean line not always considered good in line-based evaluation?

Explanation opens after your attempt
Correct Answer

D. क्योंकि बिना भाव या संरचना के साफ रेखा निर्जीव हो सकती हैBecause a clean line without feeling or structure can be lifeless

Step 1

Concept

Purpose and expression of line are also important. Exam tip: do not treat neatness alone as art skill.

Step 2

Why this answer is correct

The correct answer is D. क्योंकि बिना भाव या संरचना के साफ रेखा निर्जीव हो सकती है / Because a clean line without feeling or structure can be lifeless. Purpose and expression of line are also important. Exam tip: do not treat neatness alone as art skill.

Step 3

Exam Tip

रेखा का उद्देश्य और अभिव्यक्ति भी महत्वपूर्ण हैं। परीक्षा में केवल सफाई को कला कौशल न मानें।

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Question Easy Art Education Fundamentals of Visual Arts Line Class 10 Level 10

चित्र में लाइन वर्क साफ होने का क्या लाभ है?

What is the benefit of clean line work in a picture?

Explanation opens after your attempt
Correct Answer

A. चित्र स्पष्ट दिखता हैPicture looks clear

Step 1

Concept

Clean line work makes shape and details clear. Exam tip: write line clarity.

Step 2

Why this answer is correct

The correct answer is A. चित्र स्पष्ट दिखता है / Picture looks clear. Clean line work makes shape and details clear. Exam tip: write line clarity.

Step 3

Exam Tip

साफ लाइन वर्क से आकृति और विवरण स्पष्ट होते हैं। परीक्षा में line clarity लिखें।

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Question Expert General Knowledge Indian History important date of environment and ecology Class 10 Level 43

राष्ट्रीय स्वच्छ वायु कार्यक्रम किस वर्ष शुरू हुआ था?

In which year was the National Clean Air Programme launched?

Explanation opens after your attempt
Correct Answer

C. 20192019

Step 1

Concept

The National Clean Air Programme was launched in 2019. Link it with improvement of air quality in cities.

Step 2

Why this answer is correct

The correct answer is C. 2019 / 2019. The National Clean Air Programme was launched in 2019. Link it with improvement of air quality in cities.

Step 3

Exam Tip

राष्ट्रीय स्वच्छ वायु कार्यक्रम 2019 में शुरू हुआ था। इसे शहरों में वायु गुणवत्ता सुधार से जोड़ें।

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Question Easy Mathematics Quadratic Equations Word Problems and Applications Class 10 Level 42

एक आयताकार कमरे की परिमाप (90) मीटर है और लंबाई चौड़ाई से (9) मीटर अधिक है। लंबाई क्या है?

A rectangular room has perimeter (90) m and length (9) m more than breadth. What is its length?

Explanation opens after your attempt
Correct Answer

C. (27) मीटर(27) m

Step 1

Concept

If breadth is (x), then (2(x+x+9)=90), giving (x=18) and length (27). Choose the dimension asked carefully.

Step 2

Why this answer is correct

The correct answer is C. (27) मीटर / (27) m. If breadth is (x), then (2(x+x+9)=90), giving (x=18) and length (27). Choose the dimension asked carefully.

Step 3

Exam Tip

चौड़ाई (x) हो तो (2(x+x+9)=90), जिससे (x=18) और लंबाई (27) है। पूछा गया आयाम ध्यान से चुनें।

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Question Medium Science World of Living Reproduction Class 10 Level 27

यौन संचारित रोगों से बचाव के लिए स्वच्छ और सुरक्षित व्यवहार क्यों आवश्यक है?

Why is clean and safe behavior necessary to prevent sexually transmitted diseases?

Explanation opens after your attempt
Correct Answer

A. क्योंकि ये रोग असुरक्षित यौन संपर्क से फैल सकते हैंBecause these diseases can spread through unsafe sexual contact

Step 1

Concept

Sexually transmitted diseases can spread through body fluids or contact.

Step 2

Why this answer is correct

Unsafe behavior increases infection risk.

Step 3

Exam Tip

Safe behavior and correct knowledge help in prevention. चरण 1: यौन संचारित रोग शरीर के द्रवों या संपर्क से फैल सकते हैं। चरण 2: असुरक्षित व्यवहार संक्रमण का खतरा बढ़ाता है। चरण 3: सुरक्षित व्यवहार और सही जानकारी बचाव में सहायक हैं।

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Question Easy Geography Resources and Development resource interdependence Class 10 Level 2

किस उदाहरण में जल और स्वास्थ्य संसाधन जुड़े हैं?

Which example shows link between water and health resources?

Explanation opens after your attempt
Correct Answer

A. स्वच्छ पेयजल से बीमारियों में कमीClean drinking water reduces diseases

Step 1

Concept

Clean water is necessary for human health. Exam tip: link water resource with quality of life.

Step 2

Why this answer is correct

The correct answer is A. स्वच्छ पेयजल से बीमारियों में कमी / Clean drinking water reduces diseases. Clean water is necessary for human health. Exam tip: link water resource with quality of life.

Step 3

Exam Tip

स्वच्छ जल मानव स्वास्थ्य के लिए आवश्यक है। परीक्षा में जल संसाधन को जीवन गुणवत्ता से जोड़ें।

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Question Easy Art Education Fundamentals of Visual Arts Line Class 10 Level 9

कम लेकिन सही रेखाएं चित्र में क्या दे सकती हैं?

What can fewer but correct lines give in a drawing?

Explanation opens after your attempt
Correct Answer

A. स्पष्टताClarity

Step 1

Concept

Correct lines can clarify form even if few. Exam tip: remember clean line work.

Step 2

Why this answer is correct

The correct answer is A. स्पष्टता / Clarity. Correct lines can clarify form even if few. Exam tip: remember clean line work.

Step 3

Exam Tip

सही रेखाएं कम होते हुए भी रूप स्पष्ट कर सकती हैं। परीक्षा में clean line work याद रखें।

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Question Expert General Knowledge Indian History important date of environment and ecology Class 10 Level 44

राष्ट्रीय जैव ईंधन नीति का संशोधित संस्करण किस वर्ष आया था?

In which year did the revised National Policy on Biofuels come?

Explanation opens after your attempt
Correct Answer

C. 20182018

Step 1

Concept

The revised biofuel policy came in 2018. Link it with clean energy and biofuel blending targets.

Step 2

Why this answer is correct

The correct answer is C. 2018 / 2018. The revised biofuel policy came in 2018. Link it with clean energy and biofuel blending targets.

Step 3

Exam Tip

संशोधित जैव ईंधन नीति 2018 में आई थी। इसे स्वच्छ ऊर्जा और जैव ईंधन मिश्रण लक्ष्य से जोड़ें।

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Question Expert Mathematics Arithmetic Progressions (AP) Word problems based on APs Class 10 Level 72

एक स्वच्छता अभियान में पहले दिन (18) गलियां साफ हुईं और हर अगले दिन (6) गलियां अधिक साफ हुईं। (20) दिनों में कुल कितनी गलियां साफ होंगी?

In a cleanliness campaign (18) lanes are cleaned on the first day and (6) more lanes are cleaned each next day. How many lanes are cleaned in (20) days?

Explanation opens after your attempt
Correct Answer

B. (1500)

Step 1

Concept

The lane numbers are \(18,24,30,\ldots\) and \(S_{20}=1500\). Exam tip: treat a sequence with equal increase as an AP.

Step 2

Why this answer is correct

The correct answer is B. (1500). The lane numbers are \(18,24,30,\ldots\) and \(S_{20}=1500\). Exam tip: treat a sequence with equal increase as an AP.

Step 3

Exam Tip

गलियों की संख्या \(18,24,30,\ldots\) है और \(S_{20}=1500\)। परीक्षा में समान वृद्धि वाली श्रेणी को ए.पी. मानें।

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Question Expert Mathematics Arithmetic Progressions (AP) Word problems based on APs Class 10 Level 71

एक स्वच्छता अभियान में पहले दिन (12) गलियां साफ हुईं और हर अगले दिन (5) गलियां अधिक साफ हुईं। (21) दिनों में कुल कितनी गलियां साफ होंगी?

In a cleanliness campaign (12) lanes are cleaned on the first day and (5) more lanes are cleaned each next day. How many lanes are cleaned in (21) days?

Explanation opens after your attempt
Correct Answer

C. (1302)

Step 1

Concept

The lane numbers are \(12,17,22,\ldots\) and \(S_{21}=1302\). Exam tip: treat a sequence with equal increase as an AP.

Step 2

Why this answer is correct

The correct answer is C. (1302). The lane numbers are \(12,17,22,\ldots\) and \(S_{21}=1302\). Exam tip: treat a sequence with equal increase as an AP.

Step 3

Exam Tip

गलियों की संख्या \(12,17,22,\ldots\) है और \(S_{21}=1302\)। परीक्षा में समान वृद्धि वाली श्रेणी को ए.पी. मानें।

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Question Expert Science Chemical Substances – Nature and Behaviour Carbon and its Compounds Class 10 Level 15

कार्बन और उसके यौगिकों का पूर्ण दहन स्वच्छ ऊर्जा क्यों देता है?

Why does complete combustion of carbon and its compounds give cleaner energy?

Explanation opens after your attempt
Correct Answer

A. क्योंकि पर्याप्त ऑक्सीजन में मुख्यतः कार्बन डाइऑक्साइड और जल बनते हैंBecause in sufficient oxygen mainly carbon dioxide and water form

Step 1

Concept

Complete combustion needs sufficient oxygen.

Step 2

Why this answer is correct

It forms carbon dioxide and water.

Step 3

Exam Tip

Compared to incomplete combustion, less soot and poisonous gas form. चरण 1: पूर्ण दहन के लिए पर्याप्त ऑक्सीजन चाहिए। चरण 2: इससे कार्बन डाइऑक्साइड और जल बनते हैं। चरण 3: अपूर्ण दहन की तुलना में कालिख और विषैली गैस कम बनती है।

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