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 Chemistry Questions

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Q:

Which of the following is an example of thermosetting plastic?

A) Bakelite B) PVC
C) Polyethylene D) No option is correct.
 
Answer & Explanation Answer: A) Bakelite

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Q:

Find the odd one out.

A) NaCl B) Na2CO3
C) H2O D) He
 
Answer & Explanation Answer: D) He

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Q:

A) Mineral B) Tribe
C) Grass D) Town
 
Answer & Explanation Answer: C) Grass

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Q:

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

A) BBr3 B) NH3
C) CH2N2 D) CCl2F2
 
Answer & Explanation Answer: D) CCl2F2

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Q:

What is the process of rust forming on iron called?

A) Rusting B) Crystallisation
C) Shovel D) Spade
 
Answer & Explanation Answer: A) Rusting

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Q:

The only non-metal which is liquid at room temperature is

A) Mercury B) Bromine
C) Chlorine D) Gallium
 
Answer & Explanation Answer: B) Bromine

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Q:

If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?

A) only neutralisation reaction occurs, no gas is released B) white-coloured precipitate is formed
C) CO2 gas comes out with brisk effervescence D) H2 gas comes out with pop sound
 
Answer & Explanation Answer: C) CO2 gas comes out with brisk effervescence

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Q:

Benzene is ______ in ethyl alcohol.

A) soluble B) solute
C) insoluble D) insolate
 
Answer & Explanation Answer: C) insoluble

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