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Q:

Beryl is an ore/mineral of

A) Nickel B) Beryllium
C) Lead D) Tin
 
Answer & Explanation Answer: B) Beryllium

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Q:

Which among the following is not a characteristic of oxidation reaction?

A) It involves addition of hydrogen B) It involves addition of oxygen
C) It involves loss of electrons D) 4) It involves addition of electronegative element
 
Answer & Explanation Answer: A) It involves addition of hydrogen

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Q:

When large quantities of ___ are consumed, it tends to slow metabolic processes and to depress the central nervous system.

A) Butanol B) Propanol
C) Methanol D) Ethanol
 
Answer & Explanation Answer: D) Ethanol

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Q:

Which of the following are highly compressible?

A) Solid B) Liquid
C) Gas D) Solid and Liquid
 
Answer & Explanation Answer: C) Gas

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Q:

Which one of the following is a cation?

A) Carbonate B) Nitrate
C) Ammonium D) Hydroxide
 
Answer & Explanation Answer: C) Ammonium

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Q:

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

A) As B) Kr
C) C4H8 D) CH4
 
Answer & Explanation Answer: D) CH4

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Q:

How many groups and periods are present in the Modern Periodic Table?

A) 9 groups, 9 periods B) 7 groups, 8 periods
C) 18 groups, 7 periods D) 8 groups, 7 periods
 
Answer & Explanation Answer: C) 18 groups, 7 periods

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Q:

Sulphur and Chlorine can have what type of a bond?

A) Polar covalent B) Polyionic
C) Non­-polar covalent D) Ionic
 
Answer & Explanation Answer: A) Polar covalent

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