Chemistry Questions

Q:

According to an early Indian philosopher everything is made up of ___ basic elements.

A) 2 B) 4
C) 3 D) 5
 
Answer & Explanation Answer: D) 5

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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:

What is the process of slow cooling of hot glass called?

A) Annealing B) Humidifying
C) Condensation D) Decantation
 
Answer & Explanation Answer: A) Annealing

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Q:

Non-metal oxides are usually

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

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Q:

Which type of Ethanol is made from sources like molasses, sugarcane, sugar beet, sorghum and edible oil seeds?

 

A) 2G ethanol B) 1G ethanol
C) Clean ethanol D) 3G ethanol
 
Answer & Explanation Answer: B) 1G ethanol

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Q:

Ammonium nitrate, on thermal decomposition, produces :

A) NH3 and NO2 B) NH3 and NO
C) N2 and H2O D) N2O and H2O
 
Answer & Explanation Answer: D) N2O and H2O

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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:

Which of the following can undergo sublimation?

A) Ammonium chlorate B) Ammonium sulphate
C) Ammonium chloride D) Ammonium sulphide
 
Answer & Explanation Answer: C) Ammonium chloride

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