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 Chemistry Questions

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Q:

Which of the following salts is acidic in nature?

A) Sodium Carbonate B) Ammonium Phosphate
C) Magnesium Sulphate D) Sadium Acetate
 
Answer & Explanation Answer: A) Sodium Carbonate

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1 1067
Q:

Which one of the following elements has the lowest atomic mass?

A) Lithium B) Nitrogen
C) Hydrogen D) Helium
 
Answer & Explanation Answer: C) Hydrogen

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1 1064
Q:

The number of valence electrons in an atom of Phosphorous is

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

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0 1062
Q:

One should use porcelain and not metal containers in a microwave oven because..

A) Charge may accumulate on the metal surface and there is danger of getting a shock B) Porcelain vessels are better conductors of heat and thus food gets cooked quickly
C) Metal containers might undergo chemical reaction leading to spoilage of food D) Porcelain vessels are cheaper than the metal containers
 
Answer & Explanation Answer: A) Charge may accumulate on the metal surface and there is danger of getting a shock

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0 1061
Q:

Alkali metals are assigned which group in the Modern Periodic Table?

A) Second group B) Eighteenth group
C) Third group D) First group
 
Answer & Explanation Answer: D) First group

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1 1060
Q:

Curd contains mainly ___ acid.

A) Benzoic B) Fumaric
C) Lactic D) Malic
 
Answer & Explanation Answer: C) Lactic

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2 1059
Q:

When electricity is passed through an aqueous solution of Sodium Chloride (brine), it decomposes to form.

 

A) NaOH + H2 + Cl2 B) NaOH + H2 + O2
C) NaOH + HCl + H2 D) NaOH + H2 + N2
 
Answer & Explanation Answer: A) NaOH + H2 + Cl2

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3 1056
Q:

Identify a use of the isotope of uranium.

A) Fuel in nuclear reactors B) Treatment of goitre
C) Treatment of cancer D) Fuel in aeroplanes
 
Answer & Explanation Answer: A) Fuel in nuclear reactors

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0 1056