TNPSC Group 4 Chemistry Model Question Paper 2019-2020 - 1
Question: 1
In which of the following form alum is used?
(A) as a water purifier
(B) as an antiseptic
(C) as a fertilizer
(D) as a pain killer
Ans: A
as a water purifier
Question: 2
Which one of the following is the most important characteristic of water to act as a good solvent?
(A) Dissolving power of water
(B) Polar nature of water
(C) Ionizing power of water
(D) Purity of water
Ans: C
Ionizing power of water
Question: 3
Which one among the following is the most unreactive gas?
(A) Nitrogen
(B) Carbon dioxide
(C) Oxygen
(D) Hydrogen
Ans: D
Hydrogen
Question: 4
In modern surgery, metal pins are used for holding the broken bones together. This pin is made of
(A) Aluminium
(B) Titanium
(C) Stainless steel
(D) Copper
Ans: C
Stainless steel
Question: 5
Aldol condensation cannot occur between
(A) And aldehyde and an ester
(B) And aldehyde and a ketone
(C) Two different ketones
(D) Two different aldehydes
Ans: A
And aldehyde and an ester
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