Chemistry Questions

Q:

What is the maximum  number of states of matter?

A) Three B) Four
C) Five D) Variable
 
Answer & Explanation Answer: C) Five

Explanation:

There   are five known   states   of matter:    solids,    liquids,    gases, plasma and Bose-Einstein condensates.  The  main  difference in the structures of each state is in the densities of the particles.

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Q:

Which of the following is used as non­ stick coating for cooking utensils?

A) Perspex B) Styrofoam
C) Polystyrene D) Teflon
 
Answer & Explanation Answer: D) Teflon

Explanation:
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Q:

Which among the following is an example of solid sol?

A) Milk of magnesia B) Foam
C) Coloured gemstones D) Rubber
 
Answer & Explanation Answer: C) Coloured gemstones

Explanation:
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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

Explanation:
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Q:

The common name of sulphur is

A) Freon B) galena
C) lime D) brimstone
 
Answer & Explanation Answer: D) brimstone

Explanation:
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Q:

Which of the following is an ore of Aluminium?

A) Galena B) Cryollite
C) Cinnabar D) Epsom Salt
 
Answer & Explanation Answer: B) Cryollite

Explanation:
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Q:

Turquoise is an ore/mineral of

A) Copper B) Manganese
C) Mercury D) Tin
 
Answer & Explanation Answer: A) Copper

Explanation:
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Q:

The most serious air pollutant causing health hazard is

A) Sulphur dioxide B) Carbon monoxide
C) Ozone D) Nitrogen oxide
 
Answer & Explanation Answer: A) Sulphur dioxide

Explanation:
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