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 Chemistry Questions

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Q:

The melting point of ice is ____ K.

A) 253.16 B) 263.16
C) 273.16 D) 283.16
 
Answer & Explanation Answer: C) 273.16

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Q:

Chemical name of vinegar is

A) Onam B) Pongal
C) Bihu D) Hornbill
 
Answer & Explanation Answer: B) Pongal

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Q:

Which among the following compounds has the strongest hydrogen bond?

A) HI B) HCl
C) HF D) HBr
 
Answer & Explanation Answer: C) HF

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Q:

If the atomic number of Krypton is 36, then its electronic configuration is:

A) 2,8,18,8 B) 2,8,20,6
C) 2,18,16 D) 2,18,8,8
 
Answer & Explanation Answer: A) 2,8,18,8

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Q:

Which of the following can be beaten and converted into thin sheets?

A) Zinc B) Phosphorus
C) Sulphur D) Oxygen
 
Answer & Explanation Answer: A) Zinc

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Q:

The phosphorus cycle differs from the biogeochemical cycles in that

A) does not have atmospheric reservoir B) uses water more
C) have atmospheric reservoir D) None of the above
 
Answer & Explanation Answer: A) does not have atmospheric reservoir

Explanation:

Unlike other gas cycles, the phosphorus cycle differs in having atmospheric reservoir. No other gases are involved in it.

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Q:

Plastic bottles are made of a polymer called PET. The expanded form of PET is

A) Polyethylene terephthalate B) Polyethyl terelene
C) Polyethylene triphosphate D) Polyethyl tetrachloride
 
Answer & Explanation Answer: A) Polyethylene terephthalate

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Q:

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

A) B2H6 B) Ne
C) C6H14 D) O3
 
Answer & Explanation Answer: D) O3

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