Which of the following is usually not an air - pollutant?
(A) Carbon dioxide
(B) Nitrous oxide
(C) Hydrocarbons
(D) Sulphur Dioxide
The chemical name of baking soda is
(A) sodium carbonate
(B) sodium bicarbonate
(C) sodium chloride
(D) sodium nitrate
With whom does the turbine run at the hydroelectric power station.
(A) Due to temperature rise
(B) Due to the flow of water
(C) Due to wind
(D) Due to the heating of coal
Which of the following is not a Natural fibre?
(A) Starch
(B) Cellulose
(C) Rubber
(D) Nylon-6
Which of the following device is used to measure humidity?
(A) Hydrometer
(B) Hygrometer
(C) Psycho Meter
(D) Anemometer
Cotton fiber are made of
(A) Protein
(B) cellulose
(C) Fats
(D) Lipid
The hydrogen burning process is directly associated with:
(A) Oxidation
(B) Hydrogenation
(C) Hydrolysis
(D) Reduction
The two planets which have no satellites are:
(A) Mercury and Mars
(B) Venus and Mars
(C) Earth and Uranus
(D) Mercury and Venus
For photosynthesis green plants require:
(A) Light
(B) Carbon dioxide and water
(C) Chlorophyll only
(D) All of the above
Drivers have mirrors on the bus?
(A) concave mirror
(B) normal mirror
(C) convex mirror
(D) Camera
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