TNPSC Group 4 Chemistry Study Material in English Tamil - 1
Question: 1
Which one of the following is the ore of lead?
(A) Calamine
(B) Cerrusite
(C) Cinnabar
(D) Corundum
Ans: B
Cerrusite
Question: 2
Which one of the following materials is suitable for water purification?
(A) Asbestos
(B) Zeolites
(C) Silicones
(D) Quartz
Ans: B
Zeolites
Question: 3
A student by chance mixed acetone with alcohol. This mixture of acetone and alcohol can be separated by
(A) Fractional distillation
(B) Fractional crystallization
(C) Separating funnel
(D) Filtration
Ans: A
Fractional distillation
Question: 4
The gas releases through the septic tank is
(A) Ammonia
(B) Hydrogen
(C) Nitrogen
(D) Methane
Ans: D
Methane
Question: 5
Which one of the following. When dissolved in HO gives hissing sound?
(A) Quicklime
(B) Soda lime
(C) Slacked lime
(D) Limestone
Ans: D
Limestone
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