PPSC Chemistry Full Book Test With Answers

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PPSC Chemistry Full Book Test

Sr. # Questions Answers Choice
1 DDT is Biodegradable pollutant Nodegradable contaminant Air pollutant An antibiotic
2 Which among the following is secondary pollutant. CO CO2 PAN Aerosol
3 Which of the following play significant role in depletion of ozone layer. Oxides of nitrogen Oxides of carbon Oxides of sulphur None of above
4 Most Hazardous metal pollutant of automobile exhaust is. Tin Mercury Cadmium Lead
5 Photochemical among is related to pollution of Air Water Soil All of the above
6 Ozone hole refers to. Black hole Decrease to thickness of ozone layer in stratosphere Decrease of thickness of ozone in troposphere Increase concentration of ozone in the atmosphere
7 Which of the following is renewable resources of energy. Hydropower Wind power Solar power All above
8 Bioconversion of biomass can be used for. Heating purposes Power production Methane production All of the above
9 Biomass refers to all the organic material derived from Photolysis Photosynthesis Electrolysis Oxidation
10 The splitting of H2O can be carried out through Photolysis Electrolysis Dialysis Hydrogenation
11 Which of the following gas does not exist free on earth. N2 H2 O2 CH4
12 Which of the following substance has been advocated as fuel of future. O2 N2 H2 H2O
13 The most promising technique for solar production of electricity is. Dry cell Battery Solar cell None of above
14 Which of the following statement is not related with direct use of solar energy. It is used for space heating of buildings It can be used to produce electrical power using photovoltaic cells It can be used to produce hydrogen gas It can be used start motor vehicle
15 Which of the following phenomenon are driven by solar energy. Winds Water cycle Production of biomass All above
16 Which of the following is renewable energy source. Moon Wind Sun Ocean
17 Solar energy mainly light originates from sun due to. Addition relations Displacement reactions Thermonuclear reactions Substitution reactions
18 Which of the following source of energy is abundant everlasting and non polluting. Nuclear Electric Solar All above
19 Major principle underlying the sustainability of natural ecosystems is that they run on. Electric energy Solar energy Wind energy None of the above
20 Acute toxicity is expressed by the term LD50 IC50 I 1/2 Mean life
21 The key element to be considered when evaluating a health hazard is. The amount of material the employee is exposed. The total time of exposure The toxicity of the substance All above
22 The main active contaminants of nuclear reactors are. Co- 60 Mn -54 Sr-60 All above
23 The main active contaminants of uranium processing are. U - 235 U-238 Pu -234 All above
24 Which of the following process is a source of nuclear pollution. Uranium mining Uranium processing Reactor waste All above
25 The alternate feasible fuel for existence of mankind to Uranium Wood Bontonite Cloth residues
26 A man has to think of alternate sources of energy due to Shortage of vehicles Shortage of fossil fuels Construction of house Running of power plant
27 Which of the following to non -auditory effect of noise on human body. Changes in the Vascular tone <sub>Increase in the blood pressure</sub> Wakening of the coloured vision All above
28 Which of the following level is an indicator of hearing loss. &gt; 25 dB &lt; 25 dB &lt;20 dB None of these
29 A high frequency sound has frequency 100 Hz 200 HZ 300 Hz 500 Hz
30 Human hearing is sensitive to frequency in the range of about 10,000 - 20,000 Hz 10 - 10,000 Hz 16- 20,000 Hz None of the above
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