PPSC Chemistry Full Book Test With Answers

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PPSC Chemistry Full Book Test

Sr. # Questions Answers Choice
1 Which of the following statement is not correct with respect to hardness of water. It is due to soluble salts of Na it is due to soluble salts of Ca It is due to soluble salts of Mg It is due to soluble salts of Fe
2 The hardness of water i s due to the presence of dissolved soluble salts of. Calcium Megnesium Iron All above
3 Water that easily forms a lather of films and frotha when agitated with a soap solution called. Hard water Heavy water <div>Soft water</div> Washing water
4 Which of the following statements is not related with principal requisites of water for industrial purposes. It should be pure and cool It should not contain iron It contains less quantity of line It must be soft
5 Which of the following health effect is caused by cadmium. Hypertension Cardiovascular problem Kidney damage All above
6 Which of the following health effect is caused by mercury. Nerve damage Brain damage Kidney damage All above
7 Which of the following health effect is caused by lead. Cancer Neurotoxin Hypertension Kidney damage
8 Which of the following process is used for the removal of gases. Precipitation Chemical reaction in the atmosphere Absorption All above
9 Which of the following process is used for the removal of particulates. Wet removal by precipitation Sedimentation Diffusion and impaction All above
10 Which of the following pollutants results from chemicals petroleum and paper industries. SO2 CO Hydrocarbons All above
11 Which of the following pollutant result from roasting and heating processes. Dust Smoke Metal fumes All above
12 Which of the following pollutant result from combustion of fossil fuels. SO2 NOx CO All above
13 Which of the following pollutant results from combustion of fossil fuels. SO2 NO2 CO All above
14 Which of the following statement is not true with respect to hydrocarbons. They are gaseous and liquids They can be saturated or unsaturated They in air by themselves alone cause harmful effects They form photochemical oxidants
15 Which of the following statement is related with CO. It is a colorless and tasteless gas It has less affinity to words hemoglobin It has a boiling point of -192 <sup>o</sup>C It is a dangerous asphyxiant
16 Which of the following statement is no true with respect to nitrogen dioxide. It is produced by the oxidation of NO Its small concentration has been detected to lower stratosphere It is major pollutant It does not absorb sunlight.
17 Which of the following statement is not related with nitric oxide. It is a colorless and odourless gas It is produced largely by fuel combustion It is a brown pungent gas It is oxidized to NO2
18 Which of the following statement is not relevant with nitrous oxide. It is a colorless and odourless gas It is non toxic gas It is present in the atmosphere in higher concentration It has high reactivity in the lower atmosphere
19 Which of the following oxide formed in appreciable quantity in the atmosphere. NO NO2 N2O All above
20 Which of the following gas form weakly acidic sulphurous acid SO2 SO3 NO2 NO
21 Which of the following statement is not relat4ed wiht SO2 It is a colourless gas It has sharp and pungent odour It is moderately soluble in water It is reduced slowly in clear air to H2S
22 Which of the following trace elements may be present in the particulate materials. Cadmium Nickel Mercury Lead All of the above
23 The most harmful components of incomplete combination are generally groped as particulate polyclic matter organic (PPOM) These materials are derivatives of . Benzene Naphthalene Benz a pyrene None of the above
24 Particulate from soil and mineral primarily contains Sodium compounds Calcium compounds Silicon compounds Calcium, aluminum and silicon compounds
25 Which of the following substance is generally not considered an air polutant. CO CO2 SO2 NO2
26 Which of the following pollutant is not secondary pollutnat. SO3 NO2 SO2 Ozone
27 Which of the following pollutant is not primary pollutant. Ash Smoke SO3 SO2
28 Which of the following substance is colloidal in nature. Clay Al2O3 Fe2O3 All above
29 Which of the following substance is a volatile metals. Lead Zinc Mercury Sodium
30 The reduction in ozone layer would lead to Temperature chages Rainfall failure Increase uv radiation on earth All above
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