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10th ICSE
IMPORTANT
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Calcium phosphate is present in tooth enamel. Its nature is:

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Important Questions on Acids, Bases and Salts

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10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 7
A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish-blue? 
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10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 8
One of the constituents of baking powder is sodium hydrogen carbonate, the other constituent is: 
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10th ICSE
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Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 9
To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is: 
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10th ICSE
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Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 10

Which of the following statements is correct about an aqueous solution of an acid and of a base? 

(i) Higher the pH, stronger the add (ii) Higher the pH, weaker the acid

(iii) Lower the pH, stronger the base (iv) Lower the pH, weaker the base

HARD
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 11

Which of the following phenomena occur, when a small amount of acid is added to water? 

(i) Ionisation (ii) Neutralisation

 (iii) Dilution (iv) Salt formation 

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10th ICSE
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Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 12
Which one of the following can be used as an acid-base indicator by a visually impaired student? 
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10th ICSE
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Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 13
Which of the following substance will not give carbon dioxide on treatment with dilute acid? 
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10th ICSE
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Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 14
Which of the following is used for the dissolution of gold?