PPSC Chemistry Full Book Test With Answers

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PPSC Chemistry Full Book Test

Sr. # Questions Answers Choice
1 Chlorofluorocarbon are widely used as coolants in. Air conditioners Clearing solvents Aerosol propellant's All above
2 Ozone filters out radiation below. <div> o</div>1000 A <div> o</div><div>2000 A</div> <div> o</div><div>3000 A</div> <div> o</div>4000 A
3 Which of the following gas protects us form harmful effect of uv radiation. SO2 NO2 CO O3
4 Which of the following is a non degradable pollutant. Long chain phenoiics DDT Mercuric salts All above
5 SO2 is generated from which of the following industry. Drying and packing Paper Pulp paper and pulp
6 Commercial incinerators produce. Smoke CO NOx All above
7 Which of the following substance is released into environment in the nuclear power plants. Iodine -131 Argon - 41 Sr-90 Cs- 137 All above
8 Which of the following pollutant is generated from combustion of fuel. Smoke SO2 CO2 Metallic oxides All above
9 Which of the following substance act as photochemical oxidant Ozone NOx peroxyacetyl nitrate All above
10 Which of the following agrochemical acts as pollutant. Fertilizers Weedicides Herbicides All above
11 Which of the following metal acts as pollutant. Hg Pb Zn Ni All above
12 Which of the following substance acts as gaseous pollutant. NO NO2 CO SO2 All above
13 Which of the following acids acts as acid waste from coal mines. HCl HNO3 CH3COOH H3PO4
14 Which of the following substances act as pollutant. Oils Greases Toxins All above
15 Pesticide residues appear in which of the following foods. Milk Fruit Fish Vegetables All above
16 Which of the following is an important aspect of industrial ecology. Minimising air emissions Minimising liquid waste Recycling after use All above
17 Which of the following is domain of industrial ecology. The materials extractor The materials processor The consumer All of above
18 Which of the following statement is not correct with respect to hydrolytic cycle. It is the major constituent of the lithosphere Water covers about 83% of the earth's surface it is essential requirement of all the organisms Water covers about 73% of the ear5th's surface.
19 Which of the following process is involved in nitrogen flotation Non symmetric fixation of nitrogen Fixation by soil bacteria Fixation by yeast Fixation by blue green algae All above
20 Which of the following process is involved in getting back nitrogen into atomosphere. Nitrification Denitricication Ammonification All above
21 Which of the following substance is most abundant of all components of atmospheric air. O2 N2 CO2 A2
22 Which of the following biogeochemical cycle is not component of ecosystem. Carbon cycle Potassium cycle Oxygen cycle Nitrogen cycle
23 Which of the following statement is not true with respect to the role of matter undergoing decomposition. Decomposed matter increase soil fertility They provide a texture which is favorable for plant growth Organic compounds for complexes with mineral nutrients which enhance uptake by plants. In high concentration the decomposition product may increase the photosynthesis
24 Which of the following statements is not related to the decomposition phenomenon occurring in nature. Decomposition is due to autotrophic organisms Decomposition involves bacteria and fungi During decomposition organisms carry out specific reactions Many species of decomposer are present in the biosphere
25 Which of the following process involves the use fo organic compound as an electron acceptor. Aerobic respiration Anaerobic respiration Fermentation Glycolsis
26 In biological ecosystem which of the following substance is used by organisms. Water Sunlight Minerals All above
27 Which of the following energy is trapped by the autotrophic organisms. Mechanical energy Electrical energy Radiant energy Electronic energy
28 Which of the following is component of the ecosystem. Inorganic substances ORGANIC Substances Animal and plants only All above
29 Which of the following statement is not related with industrial ecology. Study of interactions between human activities and its environment Industrial ecology seeks to optimize the total industrial materials cycle from virgin material to finished product Industrial impacts on the environment Economic system are viewed in isolating from their surrounding
30 The action of all the relations of all the organism to their environment is called Biology Botany Ecology Archiology
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