Chemistry MCQs with answers Page - 49

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Q. Which of the following does the nucleus of an atom consists of?

  • (A) Protons and neutrons
  • (B) Protons and electrons
  • (C) Electrons
  • (D) Protons

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Q. The common name of sodium bicarbonate is

  • (A) Baking powder
  • (B) Soda lime
  • (C) Soda ash
  • (D) Baking soda

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Q. An element of atomic no. 29 belongs to

  • (A) f-block
  • (B) p-block
  • (C) d-block
  • (D) s-block

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Q. KMnO4 can be used as a/an

  • (A) insecticide
  • (B) disinfectant
  • (C) fertiliser
  • (D) pesticide

A

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Q. Which among the given alkali metals has highest specific heat -

  • (A) Rubidium
  • (B) Lithium
  • (C) Potassium
  • (D) Caesium

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Q. The antiseptic compound present in dettol is

  • (A) Iodine
  • (B) Enloroxylenol
  • (C) Cresol
  • (D) Biothional

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Q. Cryolite is:

  • (A) Na4 AlF6
  • (B) Na3 AlF6
  • (C) Na2 AlF3
  • (D) Na3 Al2 F4

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Q. Aluminium salt commonly used to stop bleeding is

  • (A) Aluminium sulphate
  • (B) Aluminium Chloride
  • (C) Potash alum
  • (D) Aluminium nitrate

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Q. Chile saltpeter is the common name of:

  • (A) Potassium nitrite
  • (B) Sodium nitrite
  • (C) Potassium nitrate
  • (D) Sodium nitrate

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Q. Silicone is a polymer of

  • (A) Dialkyl dichloro silane
  • (B) Tetraalkyl silane
  • (C) Silicon tetrachloride
  • (D) Silane

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