Q. Which of the following are uses of Biogas?
I. Cooking Food
II. Lighting
III. Run engines of water pumping sets
IV. Generating electricity
Correct code is -
1) Only I
2) Only I and II
3) Only I, II and IV
4) I, II, III and IV all
Q. How much amount of urea will be required for supplying 1 kg of nitrogen?
1) 2.0 kg
2) 2.2 kg
3) 2.5 kg
4) 2.7 kg
Q. Plaster of Paris is made up of -
1) Marble
2) Cement
3) Gypsum
4) Limestone
Q. Which pollution is responsible for Knock-Knee-Syndrome?
1) Fluoride
2) Mercury
3) Arsenic
4) Cadmium
Q. Arrange the following substances in chronological order of their first synthesis in lab -
1. Black gold 2. Fullerene 3. Graphene 4. Kevlar
Select correct answer from the codes given below -
Codes :
1) 1 2 3 4
2) 4 2 3 1
3) 2 4 3 1
4) 4 1 2 3
Q. A sample of any of the following substances disappears after some-time when exposed to air like camphor, naphthalene or dry ice. This phenomenon is called -
1) Sublimation
2) Evaporation
3) Diffusion
4) Radiation
Q. The gas, which is emitted in the paddy fields and increases the earth's temperature is -
1) Nitrogen
2) Carbon dioxide
3) Carbon monoxide
4) Methane
Q. Which of the following is an example of herbicide?
1) Sodium chlorate
2) Potassium permanganate
3) Bleaching powder
4) None of the above
Q. Which one of the following materials contains calcium?
1) China clay
2) Corundum
3) Gypsum
4) Talc
Q. What is the bond order of CO group?
1) 1
2) 2.5
3) 3.5
4) 3
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