Chemistry MCQs with answers Page - 140

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which particle has a negative charge?

  • (A) Proton
  • (B) Neutron
  • (C) Electron
  • (D) Positron

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which gas is used in fire extinguishers?

  • (A) Oxygen
  • (B) Carbon dioxide
  • (C) Nitrogen
  • (D) Hydrogen

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the chemical formula of table salt?

  • (A) NaCl
  • (B) KCl
  • (C) Na2CO3
  • (D) NaOH

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which law states that mass is neither created nor destroyed in a chemical reaction?

  • (A) Law of Definite Proportions
  • (B) Law of Conservation of Mass
  • (C) Boyle’s Law
  • (D) Charles’ Law

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which element is essential for the rusting of iron?

  • (A) Carbon dioxide
  • (B) Oxygen
  • (C) Nitrogen
  • (D) Helium

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following is a noble metal?

  • (A) Zinc
  • (B) Copper
  • (C) Silver
  • (D) Iron

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following elements is present in chlorophyll?

  • (A) Calcium
  • (B) Magnesium
  • (C) Iron
  • (D) Zinc

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following gases causes acid rain?

  • (A) Carbon monoxide
  • (B) Nitrogen dioxide
  • (C) Oxygen
  • (D) Hydrogen

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following has the highest electronegativity?

  • (A) Oxygen
  • (B) Fluorine
  • (C) Chlorine
  • (D) Nitrogen

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which acid is produced in our stomach to aid digestion?

  • (A) Sulphuric acid
  • (B) Hydrochloric acid
  • (C) Nitric acid
  • (D) Acetic acid

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