Acid Base Salt NCERT Exemplar problems mcqs-2

Acid Base and Salt

NCERT Exemplar Problems and Solution MCQ 2

Common salt besides being used in kitchen can also be used as the raw material for making

  1. soda
  2. bleaching powder
  3. baking soda
  4. slaked lime
  1. (i) and (ii)
  2. (i), (ii) and (iv)
  3. (i) and (iii)
  4. (i), (iii) and (iv)
    Answer: (c) (i) and (iii)

One of the constituents of baking powder is sodium hydrogencarbonate, the other constituent is

  1. hydrochloric acid
  2. tartaric acid
  3. acetic acid
  4. sulphuric acid
    Answer: (b) Tartaric acid

To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is

  1. acidic
  2. neutral
  3. basic
  4. corrosive
    Answer: (c) basic

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

  1. Higher the pH, stronger the acid
  2. Higher the pH, weaker the acid
  3. Lower the pH, stronger the base
  4. Lower the pH, weaker the base
  1. (i) and (iii)
  2. (ii) and (iii)
  3. (i) and (iv)
  4. (ii) and (iv)
    Answer: (d) (ii) and (iv)

The pH of the gastric juices released during digestion is

  1. less than 7
  2. more than 7
  3. equal to 7
  4. equal to 0
    Answer: (a) less than 7

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

  1. Ionisation
  2. Neutralisation
  3. Dilution
  4. Salt formation
  1. (i) and (ii)
  2. (i) and (iii)
  3. (ii) and (iii)
  4. (ii) and (iv)
    Answer: (b) (i) and (iii)

Which one of the following can be used as an acid–base indicator by a visually impaired student?

  1. Litmus
  2. Turmeric
  3. Vanilla essence
  4. Petunia leaves
    Answer: (c) Vanilla essence

Which of the following substance will not give carbon dioxide on treatment with dilute acid?

  1. Marble
  2. Limestone
  3. Baking soda
  4. Lime
    Answer: (d) Lime

Which of the following is acidic in nature?

  1. Lime juice
  2. Human blood
  3. Lime water
  4. Antacid
    Answer: (a) Lime juice

In an attempt to demonstrate electrical conductivity through an electrolyte, the following apparatus (Given Figure) was set up. Which among the following statement(s) is(are) correct?

set up for electrolysis
  1. Bulb will not glow because electrolyte is not acidic
  2. Bulb will glow because NaOH is a strong base and furnishes ions for conduction
  3. Bulb will not glow because circuit is incomplete
  4. Bulb will not glow because it depends upon the type of electrolytic solution
  1. (i) and (iii)
  2. (ii) and (iv)
  3. (ii) only
  4. (iv) only
    Answer: (c) (ii) only


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