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Science Acids, Bases, and Salts MCQ Questions for Class 10

Practice focused topic-wise MCQs with answers and explanations for quick revision and exam preparation.

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Acids, Bases, and Salts Practice Questions

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सोडियम क्लोराइड का जलीय विलयन किस औद्योगिक प्रक्रिया का प्रारंभिक पदार्थ है?

Aqueous sodium chloride solution is the starting material for which industrial process?

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Correct Answer

B. क्लोर क्षार प्रक्रियाChlor-alkali process

Step 1

Concept

Aqueous sodium chloride solution is called brine.

Step 2

Why this answer is correct

Its electrolysis gives chlorine, hydrogen and sodium hydroxide.

Step 3

Exam Tip

This is known as the chlor-alkali process.

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क्लोर क्षार प्रक्रिया के बाद विलयन में कौन सा क्षार बचता है?

Which base remains in the solution after the chlor-alkali process?

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C. सोडियम हाइड्रॉक्साइडSodium hydroxide

Step 1

Concept

The chlor-alkali process is electrolysis of brine.

Step 2

Why this answer is correct

Chlorine and hydrogen gases are formed, and sodium hydroxide remains in solution.

Step 3

Exam Tip

The word alkali in the name refers to sodium hydroxide.

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क्लोर क्षार प्रक्रिया में प्राप्त क्लोरीन का एक प्रमुख उपयोग क्या है?

What is one major use of chlorine obtained in the chlor-alkali process?

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C. जल को कीटाणुरहित करनाDisinfecting water

Step 1

Concept

Chlorine has disinfecting properties.

Step 2

Why this answer is correct

Therefore, it is used to disinfect water.

Step 3

Exam Tip

Its related product, bleaching powder, is also useful in water treatment.

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क्लोर क्षार प्रक्रिया में प्राप्त हाइड्रोजन का एक उपयोग किसमें किया जा सकता है?

One use of hydrogen obtained in the chlor-alkali process is in which of the following?

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A. वनस्पति तेलों के हाइड्रोजनीकरण मेंHydrogenation of vegetable oils

Step 1

Concept

Hydrogen gas is also obtained in the chlor-alkali process.

Step 2

Why this answer is correct

Hydrogen can be used in the hydrogenation of vegetable oils.

Step 3

Exam Tip

Remember the different uses of each industrial product.

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सोडियम हाइड्रॉक्साइड का उपयोग निम्न में से किस उद्योग में किया जाता है?

Sodium hydroxide is used in which of the following industries?

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Correct Answer

A. साबुन और कागज उद्योगSoap and paper industry

Step 1

Concept

Sodium hydroxide is an important industrial base.

Step 2

Why this answer is correct

It is used in making soap, paper and many chemical products.

Step 3

Exam Tip

Uses of chemicals made from common salt are often asked in exams.

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विरंजक चूर्ण की तैयारी में सूखे बुझा हुए चूने पर कौन सी गैस प्रवाहित की जाती है?

Which gas is passed over dry slaked lime in the preparation of bleaching powder?

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Correct Answer

B. क्लोरीनChlorine

Step 1

Concept

Bleaching powder is a useful chlorine-based substance.

Step 2

Why this answer is correct

It is prepared by passing chlorine over dry slaked lime.

Step 3

Exam Tip

Link its preparation with its uses for easier revision.

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विरंजक चूर्ण को रंगीन पदार्थों का रंग हटाने में क्यों उपयोग किया जाता है?

Why is bleaching powder used to remove colour from coloured substances?

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Correct Answer

C. क्योंकि इसमें विरंजन गुण होता हैBecause it has bleaching property

Step 1

Concept

Bleaching powder has the ability to remove colour.

Step 2

Why this answer is correct

Because of this property, it is used in textile and paper industries.

Step 3

Exam Tip

Its name itself indicates its main use.

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बेकिंग सोडा को गरम करने पर कौन सा मुख्य गैसीय उत्पाद बनता है?

Which main gaseous product is formed when baking soda is heated?

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Correct Answer

D. कार्बन डाइऑक्साइडCarbon dioxide

Step 1

Concept

Baking soda decomposes on heating.

Step 2

Why this answer is correct

It releases carbon dioxide gas.

Step 3

Exam Tip

This gas helps food items rise and become soft.

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बेकिंग सोडा और बेकिंग पाउडर में मुख्य अंतर क्या है?

What is the main difference between baking soda and baking powder?

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Correct Answer

B. बेकिंग पाउडर में हल्का खाद्य अम्ल और बेकिंग सोडा दोनों होते हैंBaking powder contains baking soda and a mild edible acid

Step 1

Concept

Baking soda is sodium hydrogen carbonate.

Step 2

Why this answer is correct

Baking powder contains baking soda along with a mild edible acid.

Step 3

Exam Tip

This makes baking powder more suitable for food preparation.

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केवल बेकिंग सोडा का अधिक उपयोग केक में कड़वा स्वाद क्यों दे सकता है?

Why can excess use of only baking soda give a bitter taste to cake?

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Correct Answer

A. क्योंकि उससे क्षारीय पदार्थ बन सकता हैBecause a basic substance may be formed

Step 1

Concept

Baking soda can form a basic substance on heating.

Step 2

Why this answer is correct

This basic substance can give a bitter taste.

Step 3

Exam Tip

The edible acid in baking powder reduces this effect.

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