Chemistry MCQs

Page No. 73

Major cause of SO2 on global scale is__________________?


avolcanoes

✓


belectric sparks

✖


ccombustion

✖


dall

✖


View Answer volcanoes

Which of the following is not a secondary pollutant_________________?


aozone

✖


bcarbonic acid

✖


csulphuric acid

✖


dcarbon dioxide

✓


View Answer carbon dioxide

Requirement of macronutrient per acre of the land is_________________?


a5 to 200 kg

✓


b20- 200 kg

✖


c200-400 kg

✖


d30-400 kg

✖


View Answer 5 to 200 kg

Which of the following is not a heavy industry ?


airon

✖


bfertilizer

✖


cpaper

✖


dnone

✓


View Answer none

Pollutants have adverse effect over_________________?


aBiosphere

✖


bEcosystem

✓


cBoth A and B

✖


dHydrosphere

✖


View Answer Ecosystem

The main product of bacterial action is_________________?


aNOX

✖


bNO2

✖


cN2O3

✖


dNO

✓


View Answer NO

The percentage of suspended solid waste in raw water is removed by coagulation is__________________?


a60

✖


b70

✖


c80

✓


d90

✖


View Answer 80

Which one of the following makes the bulk of hydrospheres content ?


aoceans

✓


bglaciers & icecaps

✖


cfresh water lakes and ponds

✖


dAll have equal distribution

✖


View Answer oceans

Which substance can be used for disinfecting water ?


aKMnO4

✓


bAlums

✖


cOzone

✖


dAll

✖


View Answer KMnO4

The main pollutant of leather tanneries in the waste water is____________________?


achromium III

✖


bchromium IV

✓


cchromium V

✖


dchromium VI

✖


View Answer chromium IV

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