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Q:

Which of the following processes will take place the slowest for the same quantity of liquid?

A) Boiling B) Condensation
C) Evaporation D) Freezing
 
Answer & Explanation Answer: C) Evaporation

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Q:

The chemical formula of Propane is

A) C3H8 B) C4H10
C) C2H6 D) CH4
 
Answer & Explanation Answer: A) C3H8

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Q:

Aqueous solution of copper sulphate?

A) does not affects litmus B) affects both red and blue litmus
C) turns blue litmus red D) turns red litmus blue
 
Answer & Explanation Answer: C) turns blue litmus red

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Q:

What is the full form of PVC?

A) Phosphonil vinyl Carbonate B) Polyvinyl S Carbonate
C) Polyvinyl Carbonate D) Polyvinyl Chloride
 
Answer & Explanation Answer: D) Polyvinyl Chloride

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Q:

_____ is the fourth state of matter.

A) Plasma B) Steam
C) Gas D) Matteroid
 
Answer & Explanation Answer: A) Plasma

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Q:

Which of the following is used in the preparation of tincture iodine, cough syrup and many tonics?

A) Methanol B) Ethanoic acid
C) Acetic acid D) Ethanol
 
Answer & Explanation Answer: D) Ethanol

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Q:

Which of the following gases turns lime water milky?

A) O3 B) CO2
C) O2 D) CO
 
Answer & Explanation Answer: B) CO2

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Q:

Aluminium oxide is ___ in nature.

A) amphoteric B) acidic 
C) neutral D) basic
 
Answer & Explanation Answer: A) amphoteric

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