Acid Base & Salt - Class 10th Science

MCQs: 8

Question: 71. What is the chemical name of washing soda?

  1. Sodium carbonate
  2. Sodium bicarbonate
  3. Potassium carbonate
  4. Calcium carbonate

Answer: (a) Sodium carbonate

Question: 72. What is the chemical name of baking powder?

  1. Sodium carbonate
  2. Sodium bicarbonate
  3. Potassium carbonate
  4. Calcium carbonate

Answer: (b) Sodium bicarbonate

Question: 73. What is the use of Plaster of Paris?

  1. In plaster of fractured bones
  2. In making of false ceiling
  3. In making of mould toys
  4. All of the above

Answer: (d) All of the above

Question: 74. What is the chemical formula of gypsum?

  1. CaSO4 . 2 H2O
  2. CaSO4 . 10 H2O
  3. CaSO4 . ½ H2O
  4. CaSO4

Answer: (a) CaSO4 . 2 H2O

Question: 75. What is the nature of bleaching powder?

  1. Oxidising agent
  2. Reducing agent
  3. Clotting agent
  4. All of the above

Answer: (a) Oxidising agent

Question: 76. Which of the following is found in tooth paste?

  1. Sodium carbonate
  2. Sodium bicarbonate
  3. Sodium sulphate
  4. Sodium chloride

Answer: (b) Sodium bicarbonate

Question: 77. Baking powder produces which of the following which makes bater soft?

  1. Sodium carbonate
  2. Carbon dioxide
  3. Oxygen
  4. Nitrogen

Answer: (b) Carbon dioxide

Question: 78. Which of the gas is responsible for acid rain?

  1. Oxygen
  2. Nitrogen
  3. Carbon dioxide
  4. Chlorine

Answer: (c) Carbon dioxide

Explanation: Carbon dioxide present in atmosphere dissolved in rain water and forms carbonic acid. When rain water having carbonic acid falls on earth, this is called acid rain.

Question: 79. Which of the following product we get by chlor-alkali process?

  1. Sodium hydroxide
  2. Chlorine gas
  3. Hydrogen gas
  4. All of the above

Answer: (d) All of the above

Question: 80. Baking soda is produced by which of the following process?

  1. Chlor-alkali process
  2. Solvay process
  3. Soda process
  4. Dobereiner’s Triads process

Answer: (b) Solvay process

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