Acids, Bases, Salts And Metals - Category Wise Question And Answer Practice Test With Solutions

Question : 6 [PSC (Pre) 2017]

Goldsmiths uses aqua regia, which is prepared by mixing

a) Nitric acid and Hydrochloric acid

b) Sulphuric acid and Hydrochloric acid

c) Nitric acid and Sulphuric acid

d) Citric acid and Benzoic acid

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Question : 7 [NDA]

Human stomach produces acid ‘X’ which helps in digestion of food. Acid ‘X’ is

a) hydrochloric acid

b) acetic acid

c) methanoic acid

d) citric acid

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Question : 8 [NDA]

Which among the following statements with regard to pH scale is/are correct?

1. It is a logarithmic scale.
2. The scale is limited to 0-14 because the ionic product of water is about $10^{-14}$
3. The lower the value of pH, the greater the acidity of the solution.

Select the correct answer using the code given below

a) I and III only

b) I and II only

c) I, II and III

d) II only

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Question : 9

Reaction of an acid with a base is known as –

a) combination

b) redox reaction

c) decomposition

d) neutralization

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Question : 10

Antacids contain –

a) weak acid

b) strong base

c) weak base

d) strong acid

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