Top 500+ TNPSC Group 4 Chemistry Questions and Answers - 2
Question: 6
The IUPAC name of CH3CH2CHO is
(A) Propanol
(B) Propanal
(C) Propane
(D) Propanone
Ans: B
Propanal
Question: 7
Glass is made of the mixture of
(A) Sand and silicates
(B) Quartz and mica
(C) Sand and salt
(D) None of these
Ans: A
Sand and silicates
Question: 8
The isotope of uranium capable of sustaining chain reactions is
(A) U-235
(B) U-237
(C) U-238
(D) U-239
Ans: A
U-235
Question: 9
Among the following elements, which one is not present in a pure sugar?
(A) Oxygen
(B) Nitrogen
(C) Hydrogen
(D) Carbon
Ans: B
Nitrogen
Question: 10
_____ is used as filler in rubber tyres.
(A) Nitrogen Oxide
(B) Coal
(C) Coke
(D) Graphite
Ans: A
Nitrogen Oxide
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