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10upon10.com

class/std Ten Science

Acid, Base & Salt

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MCQs: 7

Question: 61. Sodium chloride, sodium sulphate, sodium carbonate are examples of salt. These salts belong to which of the following family of salts?

  1. Sodium family
  2. Salt family
  3. Acidic salt family
  4. Hydrochloric acid family

Answer: (a) Sodium family

Question: 62. What is the color of anhydrous copper sulphate?

  1. Blue
  2. White grey
  3. Blue grey
  4. Greenish

Answer: (b) White grey

Question: 63. What is the color of hydrated copper sulphate?

  1. Blue
  2. White grey
  3. Red grey
  4. Greenish

Answer: (a) Blue

Question: 64. What is called water of crystallization?

  1. Salt water
  2. Water consumed while crystallization of salts
  3. Water molecules present in salt crystals
  4. Minimum amount of water which is required for crystallization of salts

Answer: (c) Water molecules present in salt crystals

Question: 65. What happens when soap is applied on a cloth having turmeric stain?

  1. Color of stain changes to blue
  2. Color of stain changes to greenish black
  3. Color of stain changes to brown red
  4. No effect seen on color of stain

Answer: (c) Color of stain changes to brown red

Question: 66. What is name of salts formed by sulphuric acid?

  1. Sulphuric salt
  2. Sulphate salts
  3. Acid salts
  4. Salts of acid family

Answer: (b) Sulphate salts

Question: 67. Which of the following is known as common salt?

  1. Calcium chloride
  2. Potassium chloride
  3. Copper chloride
  4. Sodium chloride

Answer: (d) Sodium chloride

Question: 68. Which of the following salt was prepared by Mahatma Gandhi while Dandi March?

  1. Calcium chloride
  2. Potassium chloride
  3. Copper chloride
  4. Sodium chloride

Answer: (d) Sodium chloride

Question: 69. Which of the following is known as soda ash?

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

Answer: (a) Sodium carbonate

Question: 70. Which of the following is used in fire extinguisher?

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

Answer: (b) Sodium bicarbonate

MCQs Test

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