ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Classical smog occurs in palces of Excess SO<sub>2</sub> Low temperature High temperature Excess NH<sub>3</sub>
2 Shahi Qilla may be destroyed by Flood in Ravi Temperature mediated spoilage of marble Air pollutants from Lahore chemical industries All the above
3 Ultraviolet radiation from sun causes a reaction that produces Fluorides Carbon monoxide Sulphur dioxide Ozone
4 Which of the following forms a toxic substance in blood by combing with hemoglobin? Carbon dioxide Carbon monoxide Oxygen Methane
5 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen? Ozone Nitrous oxide Sulphure dioxide Carbon monoxide
6 Ozone depletion in stratosphere shall result in Forest fires Increased incidence of skin cancer Global warming None of the above
7 Increased asthmatic attacks in certain seasons are related to Inhalation of seasonal pollen Eating of seasonal vegetables Low temperature Wet and dry environment
8 Domestic waste mostly constitutes Non-biodegradable pollution Biodegradable pollution Effluents Air pollution
9 Burning of fossil fuels is the main source of pollution Nitrogen oxide Nitric oxide Nitrous oxide Sulphur dioxide
10 Atomospheric pollutant is CO<sub>2</sub> CO O<sub>2</sub> N<sub>2</sub>
11 Spraying of DDT produces pollution of Air Air and water Air and soil Air, water and soil
12 Acid rains are produced by Excess NO<sub>2</sub>and SO<sub>2 </sub>from burining fossil fuels Excess production of NH<sub>3</sub>by industry and coal gas Excess release of carbon monoxide by incomplete combustion Excess formation of CO<sub>2</sub>by combustion and animal respiration
13 Carbon monoxide is pollutant as it Inactivates nerves Inhibits glycolysis Combines with oxygen Combines with hemoglobin
14 SO2and NO2produce pollution by increasing Alkalinity Acidity Neutrality Buffer action
15 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is Mercury Lead Nitrogen oxide Sulphuric oxide
16 Sulphur dioxide affects Cell wall Plasmodesmata All membrane systems Nucleus
17 Cyclone collector is used for minimizing Radioactive pollution Air pollution Noise pollution Water pollution
18 Minamata disease is due to pollution of Organic waste into drinking water Oil spill in water Industrial waste containing mercury into fishing water Arsenic into the atmosphere
19 Which one is not a pollutant normally? Hydrocarbons Carbon dioxide Carbon monoxide Sulphur dioxide
20 Chief air pollutant which is likely to deplete ozone layer Sulphure dioxide Carbon dioxide Nitrogen oxides and chloro fluorocarbons
21 Atmosphere of big/metropolitan cities is polluted most by Automobile exhausts Pesticide residue Household waste Radio-active fall out
22 Which of the following is fully fluorinated polymer? Neoprene Teflon Thiokol PVC
23 Which of the following is a biodegradable polymer? Cellulose Polyethene Polyvinyl chloride Nylon-6
24 Which of the following has ester linkage? Nylon Bakelite Terylene PVC
25 Which is a protein? Nylon Rayon Natural silk Terylene
26 Bakelite is a product formed form Reaction of formaldehyde with phenol Reaction of polyethylene with phenol Reaction of polypropylene with acid It is a natural product
27 Polymer formation from monomers starts by Condensation reaction between monomers Coordination reaction between monomers Conversion of monomer to monomer ions by protons Hydrolysis of monomers
28 A condensation polymer among the following is Dacron PVC Polysterene Teflon
29 Which of the following is a constituent of nylon? Adipic acid Styrene Teflon None of these
30 Soft drinks and baby feeding bottles are generally made up of Polyester Polyurethane Polyurea Polystyrene
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