TNPSC Group 4 Question Bank with Answers Free Download - 2
Question: 6
The element radium is extracted from
(A) Haematite
(B) Retile
(C) Pinch blend
(D) Limestone
Ans: C
Pinch blend
Question: 7
In which of the following chlorine has +1 oxidation number?
(A) Chlorine
(B) Zinc chloride
(C) Hydrochloric acid
(D) Hypochlorous acid
Ans: D
Hypochlorous acid
Question: 8
Which one of the following is a transition metal?
(A) Calcium
(B) Magnesium
(C) Manganese
(D) Aluminium
Ans: C
Manganese
Question: 9
The percentage content of carbon is found to be maximum in
(A) Anthracite
(B) Bituminous
(C) Lignite
(D) Peat
Ans: A
Anthracite
Question: 10
The nucleus of a singly ionized carbon atom contain
(A) 5 protons and 6 neutrons
(B) 6 protons and 6 neutrons
(C) 6 protons, 6 neutrons and 6 electrons
(D) 12 protons, 6 neutrons and 6 electrons
Ans: B
6 protons and 6 neutrons
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