Chemistry Questions

Q:

What is the weight of one mole Carbon atoms?

A) 12 gm B) 120 gm
C) 1.2 gm D) 0.12 gm
 
Answer & Explanation Answer: A) 12 gm

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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:

Glass is also called ________.

A) Supercooled liquid B) Super liquid
C) Ideal liquid D) Distilled liquid
 
Answer & Explanation Answer: A) Supercooled liquid

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Q:

______ bond holds the atoms together within a water molecule.

A) Nonpolar covalent B) Polar covalent
C) Ionic D) Co­-ordinate
 
Answer & Explanation Answer: B) Polar covalent

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Q:

Which drug is used for Pain Relief?

A) Risedronate B) Tramadol
C) Folic Acid D) Bupropion
 
Answer & Explanation Answer: B) Tramadol

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Q:

Which of the following elements has the lowest melting point?

A) Titanium B) Sulphur
C) Argon D) Zinc
 
Answer & Explanation Answer: C) Argon

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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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Q:

___________ is obtained by evaporation of sea.

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

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