Aluminum is obtained from which mineral?
(A) Monanite
(B) Anthracite
(C) Bauxite
(D) Thorium
Which metal is the best conductor of heat?
(A) Gold
(B) Aluminum
(C) Silver
(D) Brass
Why put a wooden handle in the kettle?
(A) because of fashion
(B) Wood is a bad conductor of heat and the handle is not hot
(C) is light
(D) None of these
The main ingredient of 'Bio Gas' is?
(A) ethane
(B) Ammonia
(C) Methane
(D) Ethylene
By whom is the focus distance corrected in the eye lens?
(A) Ratina
(B) iris
(C) ciliary muscles
(D) Carnia
What is the scientific name for common salt?
(A) sodium sulfate
(B) sodium chloride
(C) sodium bicarbonate
(D) Ammonium chloride
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