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

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Acids, Bases, and Salts Practice Questions

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Question 711/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 11

दाँतों की परत को नुकसान पहुँचाने वाली स्थिति किससे संबंधित है?

The condition that damages tooth enamel is related to which of the following?

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Correct Answer

A. मुँह में पीएच पाँच दशमलव पाँच से कम होनाpH in the mouth falling below 5.5

Step 1

Concept

Acids can form in the mouth after eating.

Step 2

Why this answer is correct

Tooth enamel is affected when pH falls below 5.5.

Step 3

Exam Tip

Toothpaste helps reduce acidity.

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Question 712/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 11

पेट में अधिक अम्ल बनने पर लिया जाने वाला अम्लरोधी किस सिद्धांत पर काम करता है?

An antacid taken for excess stomach acid works on which principle?

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Correct Answer

C. उदासीनीकरणNeutralisation

Step 1

Concept

Excess acid in the stomach can cause burning.

Step 2

Why this answer is correct

An antacid is mildly basic.

Step 3

Exam Tip

It neutralises the acid, so the principle is neutralisation.

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Question 713/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 11

सोडियम हाइड्रोजन कार्बोनेट का उपयोग अग्निशामक में क्यों किया जा सकता है?

Why can sodium hydrogen carbonate be used in fire extinguishers?

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Correct Answer

A. यह गरम होने पर कार्बन डाइऑक्साइड दे सकता हैIt can release carbon dioxide on heating

Step 1

Concept

Sodium hydrogen carbonate can release carbon dioxide on heating.

Step 2

Why this answer is correct

Carbon dioxide reduces the supply of oxygen around fire.

Step 3

Exam Tip

Therefore, it helps in fire extinguishing.

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Question 714/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 11

बेकिंग पाउडर में बेकिंग सोडा के साथ हल्का खाद्य अम्ल मिलाने का मुख्य लाभ क्या है?

What is the main benefit of adding a mild edible acid with baking soda in baking powder?

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Correct Answer

B. यह क्षारीय कड़वाहट को कम करता है और कार्बन डाइऑक्साइड बनाने में मदद करता हैIt reduces basic bitterness and helps produce carbon dioxide

Step 1

Concept

Baking soda alone can give a basic taste.

Step 2

Why this answer is correct

The edible acid balances this effect.

Step 3

Exam Tip

The reaction releases carbon dioxide, which makes food rise.

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Question 715/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 11

वाशिंग सोडा कठोर जल को नरम करने में कैसे सहायता करता है?

How does washing soda help in softening hard water?

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Correct Answer

A. यह कैल्शियम और मैग्नीशियम आयनों को हटाने में सहायता करता हैIt helps remove calcium and magnesium ions

Step 1

Concept

Hard water contains calcium and magnesium salts.

Step 2

Why this answer is correct

Washing soda helps remove these ions.

Step 3

Exam Tip

This softens water and soap forms better lather.

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Question 716/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 11

विरंजक चूर्ण का जल शोधन में उपयोग किस गुण के कारण होता है?

Due to which property is bleaching powder used in water purification?

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Correct Answer

B. कीटाणुनाशक गुण के कारणDue to disinfecting property

Step 1

Concept

Bleaching powder has disinfecting action.

Step 2

Why this answer is correct

It helps reduce harmful microorganisms in water.

Step 3

Exam Tip

Therefore, it is used in water purification.

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Question 717/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 11

सामान्य नमक से सोडियम हाइड्रॉक्साइड प्राप्त करने वाली प्रक्रिया कौन सी है?

Which process is used to obtain sodium hydroxide from common salt?

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Correct Answer

B. क्लोर क्षार प्रक्रियाChlor-alkali process

Step 1

Concept

Aqueous solution of common salt is called brine.

Step 2

Why this answer is correct

Electrolysis of brine gives sodium hydroxide.

Step 3

Exam Tip

This process is called the chlor-alkali process.

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Question 718/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 11

क्लोर क्षार प्रक्रिया में प्राप्त तीन मुख्य उत्पादों का सही समूह कौन सा है?

Which is the correct group of three main products obtained in the chlor-alkali process?

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Correct Answer

A. क्लोरीन, हाइड्रोजन और सोडियम हाइड्रॉक्साइडChlorine, hydrogen and sodium hydroxide

Step 1

Concept

The chlor-alkali process involves electrolysis of brine.

Step 2

Why this answer is correct

It produces chlorine, hydrogen and sodium hydroxide.

Step 3

Exam Tip

All three are industrially useful substances.

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Question 719/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 11

यदि किसी लवण का विलयन नीले लिटमस पर कोई प्रभाव नहीं डालता और लाल लिटमस पर भी कोई प्रभाव नहीं डालता, तो उसका पीएच लगभग कितना हो सकता है?

If a salt solution has no effect on both blue and red litmus, what may be its approximate pH?

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Correct Answer

B. सात7

Step 1

Concept

No effect on both litmus papers may indicate neutrality.

Step 2

Why this answer is correct

A neutral solution has pH around 7.

Step 3

Exam Tip

Pure water and common salt solution can be examples.

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Question 720/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 11

अमोनियम क्लोराइड का जलीय विलयन नीले लिटमस को लाल कर सकता है। इसका कारण क्या है?

An aqueous solution of ammonium chloride can turn blue litmus red. What is the reason?

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Correct Answer

B. यह प्रबल अम्ल और कमजोर क्षार से बने लवण का उदाहरण हैIt is an example of a salt made from a strong acid and a weak base

Step 1

Concept

Ammonium chloride is considered a salt of a strong acid and a weak base.

Step 2

Why this answer is correct

Such a salt can give an acidic solution.

Step 3

Exam Tip

Therefore, it can turn blue litmus red.

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