PPSC Chemistry Full Book Test With Answers

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PPSC Chemistry Full Book Test

Sr. # Questions Answers Choice
1 The range of sound pressure which is painful is as 130-140 dB 100 - 120 dB 90 - 80 dB All above
2 The range of sound pressure for uncomfortable level is. 80 - 90 dB 100 - 120 dB 130-140 dB All above
3 The unit of sound pressure level is Pascal Decibel Newton Ampere
4 The maximum noise level at which a man can work for 8 hours is. 80 dB 70 dB 90 dB 60 dB
5 In plant noise control, which of the following method is used for reducing noise Plant planning Control at the source Control of radiated noise All above
6 Which of the following pollutants does not a leave a residue. Air pollutant Chemical pollutant Soil pollutant Noise pollutant
7 Which of the following statement represent disadvantages of sanitary landfill Public opposition Uneconomical Health hazard All above
8 Which of the following statement represent advantages of sanitary Landfill Economical method Low initial investment Flexible daily capacity All above
9 Which of the following disposal method is used for agriculture wastes. Dump Landfill Incineration Open burning All above
10 Which of the following disposal method is used or municipal wastes. Compaction Composting Recycling Chemical processing All above
11 Which of the following material is a constituent of crop residue. Cull Fruit vines Bagasse All above
12 The expected specific waste fo petroleum industry is. Asphalt and tars Paper Cloth Fibre
13 The expected specific waste of paper and allied products industry is. Chemicals Paper and fibre residues Links All above
14 The expected specific wastes of textile industry is Cloth residue Fibre residue Dyes All above
15 The expected specific waste of food industry is. Meats Nuts Fats or Oils All above
16 Which of the following techniques are used for minimizing water pollution. Stabilization of ecosystem Recharge of the waste Waste treatment All above
17 Which of the following statement is not correct with respect to radioactive pollutnats. Carcinoma and breast cancer Leukemia Increases biological immune system Somatic and generic disorder
18 Which of the following statement is not related with the effect of thermal pollution. Decrease in BOD Increase in BOD Reduction in DO Change in algal production
19 Which of the following statement is not correct with respect to harmful effects of ground water pollution. It causes lungs cancer It causes jaundice It damages crops It helps to prevent epidermises
20 Ground water is threatened with pollution from which of the following source. Domestic wastes Industrial wastes Agricultural wastes All above
21 Which of the following chemical strong oxidizing agent is used in COD test. KMnO4 H2SO4 CH3COOH K2Cr2O7
22 Which of the following compounds has fishing ordure ammonia Organic sulphides Amines H2S
23 Which of the following is not biological characteristics of water. COD Animals Plants Viruses
24 Which of the following is not chemical characteristics of water. pH COD BOD Colour
25 Which of the following process is not physical in nature. Mixing Flocculation Sedimentation Activated sludge process
26 Which of the following water require zero hardness. Boiler feed water Laundry water Paper will water Dyeing water
27 Permanent hard water is softened by addition of. Na2CO3 CaCO3 MgCO3 ZnCO3
28 Temporary hard water is softened on industrial scale by adding. Mg(OH)2 Ca(OH)2 KOH NaOH
29 Permanent hardness of water is due to. Sulphate of Ca Chloride of Ca Sulphate of Mg All above
30 Temporary hardness of water is due to. Bicarbonates of K Bicarbonates of Na Carbonates of Ca Bicarbonates of Ca
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