Chemistry Questions

Q:

When large quantities of ___ are consumed, it tends to slow metabolic processes and to depress the central nervous system.

A) Butanol B) Propanol
C) Methanol D) Ethanol
 
Answer & Explanation Answer: D) Ethanol

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Q:

Beryl is an ore/mineral of

A) Nickel B) Beryllium
C) Lead D) Tin
 
Answer & Explanation Answer: B) Beryllium

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Q:

In water treatment plant, use of chloramines ensures __________

A) taste and odour control B) weed control in reservoirs
C) disinfection D) removal of permanent hardness
 
Answer & Explanation Answer: C) disinfection

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Q:

The metal that can be cut with a knife is

A) Sodium B) Iron
C) Aluminium D) Copper
 
Answer & Explanation Answer: A) Sodium

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Q:

In which of the following solution the concentration of H+ ion is the maximum?

A) pH 6 B) pH 8
C) pH 5 D) pH 9
 
Answer & Explanation Answer: C) pH 5

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Q:

What is the common name of the solution of calcium hydroxide?

A) Lime water B) Diet soda
C) Salt solution D) Vinegar
 
Answer & Explanation Answer: A) Lime water

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Q:

Which of the following metals displaces Iron from Iron Chloride?

A) Lead B) Zinc
C) Tin D) Silver
 
Answer & Explanation Answer: B) Zinc

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Q:

The number of free electrons in the outermost shell of carbon atoms in diamand is

A) zero B) two
C) four D) three
 
Answer & Explanation Answer: A) zero

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