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Q:

Acids that contain Hydrogen and other non-metallic element(s), except Oxygen, are called

A) Hydracids B) Dilute acids
C) Strong acids D) Weak acids
 
Answer & Explanation Answer: A) Hydracids

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Q:

Which electron dot formula represents a polar molecule?

A) A B) B
C) C D) D
 
Answer & Explanation Answer: B) B

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Q:

What is dehydration?

A) Removal of acid from a molecule B) Removal of base from a molecule
C) Removal of water from a molecule D) Removal of alkali from a molecule
 
Answer & Explanation Answer: C) Removal of water from a molecule

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Q:

The nitrogenous waste of Human Beings is

A) Ammonia B) Urea
C) Ammonium Nitrate D) Uric Acid
 
Answer & Explanation Answer: B) Urea

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Q:

Which of the following elements has the lowest melting point?

A) Bromine B) Zinc
C) Lead D) Calcium
 
Answer & Explanation Answer: A) Bromine

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Q:

Covalent Bond is also called _________.

A) Molecular Bond B) Proton Bond
C) Nucleus Bond D) Electron Bond
 
Answer & Explanation Answer: A) Molecular Bond

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Q:

Phosphorus is kept in water because

A) its ignition temperature is very high B) its ignition temperature is very low 
C) its critical temperature is high D) its critical temperature is low
 
Answer & Explanation Answer: A) its ignition temperature is very high

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Q:

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

A) CH2ClF B) C2H2
C) PF5 D) COCl2
 
Answer & Explanation Answer: A) CH2ClF

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