PPSC Chemistry Part V Environmental Chemistry Online Test With Answers

PPSC Chemistry Part V Environmental Chemistry Online Test

Sr. # Questions Answers Choice
1 Which of the following substance has been advocated as fuel of future. O2 N2 H2 H2O
2 The most promising technique for solar production of electricity is. Dry cell Battery Solar cell None of above
3 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
4 Which of the following phenomenon are driven by solar energy. Winds Water cycle Production of biomass All above
5 Which of the following is renewable energy source. Moon Wind Sun Ocean
6 Solar energy mainly light originates from sun due to. Addition relations Displacement reactions Thermonuclear reactions Substitution reactions
7 Which of the following source of energy is abundant everlasting and non polluting. Nuclear Electric Solar All above
8 Major principle underlying the sustainability of natural ecosystems is that they run on. Electric energy Solar energy Wind energy None of the above
9 Acute toxicity is expressed by the term LD50 IC50 I 1/2 Mean life
10 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
11 The main active contaminants of nuclear reactors are. Co- 60 Mn -54 Sr-60 All above
12 The main active contaminants of uranium processing are. U - 235 U-238 Pu -234 All above
13 Which of the following process is a source of nuclear pollution. Uranium mining Uranium processing Reactor waste All above
14 The alternate feasible fuel for existence of mankind to Uranium Wood Bontonite Cloth residues
15 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
16 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
17 Which of the following level is an indicator of hearing loss. &gt; 25 dB &lt; 25 dB &lt;20 dB None of these
18 A high frequency sound has frequency 100 Hz 200 HZ 300 Hz 500 Hz
19 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
20 The range of sound pressure which is painful is as 130-140 dB 100 - 120 dB 90 - 80 dB All above
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