Chemistry Questions

Q:

Anions are formed by _____.

A) losing of electrons B) gaining of electrons
C) gaining of neutrons D) losing of neutrons
 
Answer & Explanation Answer: B) gaining of electrons

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Q:

Uraninite is an ore/mineral of _______.

A) Zinc B) Uranium
C) Titanium D) Aluminium
 
Answer & Explanation Answer: B) Uranium

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Q:

What is formed when Carbon Dioxide is passed through Lime Water?

A) Copper Sulphate B) Calcium Carbonate
C) Magnesium Oxide D) Baking Soda
 
Answer & Explanation Answer: B) Calcium Carbonate

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Q:

Which of the following is used in gunpowder?

A) Potassium bromide B) Potassium nitrate
C) Monopotassium tartarate D) Potassium sulphate
 
Answer & Explanation Answer: B) Potassium nitrate

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Q:

Who among the following laid the foundation of chemical sciences by establishing two important laws of chemical combination?

A) Joseph L. Proust B) Antoine L. Lavoisier
C) Ernest Rutherford D) Democritus
 
Answer & Explanation Answer: B) Antoine L. Lavoisier

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Q:

___________ is obtained by evaporation of sea.

A) Sugar B) Iron
C) Salt D) Steel
 
Answer & Explanation Answer: C) Salt

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Q:

Molybdenite is an ore/mineral of

A) Molybdenum B) Nickel
C) Silver D) Tin
 
Answer & Explanation Answer: A) Molybdenum

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Q:

Which of the following is most important for absorption of heat radiated from the Sun as well as from the Earth?

A) Carbon dioxide B) Oxygen
C) Carbon monoxide D) Nitrogen
 
Answer & Explanation Answer: A) Carbon dioxide

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