Q1. Which of
the following is primary pollutant?
a. CO
b. PAN
c. Aldehydes
d. H2SO4
Ans.
a
Q2. Which of
the following is not regarded as a pollutant?
a. NO2
b. CO2
c. O3
d. Hydrocarbon
Ans.
b
Q3. The most
abundant hydrocarbon pollutant is
a. Ethane
b. Methane
c. Propane
d. Butane
Ans.
b
Q4. Which of
the following is does not contribute towards the information of photochemical
smog?
a. NO
b. SO2
c. O3
d. Hydrocarbons
Ans.
b
Q5. Which of
the following is the biggest particulate matter?
a. Soot
b. H2SO4 droplets
c. Fly ash
d. HNO3 droplets
Ans.
c
Q6. London
smog is found in
a. summer during day time
b. summer during morning time
c. winter during morning time
d. winter during day time
Ans.
c
Q7. Which of
the following statement is true?
a. SO3 is more harmful air pollutant than SO2
b. SO2 does not affect larynx
c. NO is more toxic to living tissues than NO2
d. NO does not play any role in photochemical
smog
Ans.
a
Q8. Which of
the following is a sink for CO?
a. Hemoglobin
b. Microorganisms
c. Oceans
d. Plants
Ans.
b
Q9. Which of
the following is a secondary pollutant?
a. NO
b. CO
c. SO2
d. Phenols
Ans.
d
Q10. The
greatest affinity for hemoglobin is shown by
a. NO
b. CO
c. O2
d. CO2
Ans.
a
Q.11 Ozone
layer present in
a. Troposphere
b. Stratosphere
c. Mesosphere
d. Exosphere
Ans.
b
Q.12 Which
of the following is not a herbicide?
a. Sodium chlorate
b. Sodium arsenide
c. Polyphosphate
d. Triazines
Ans.
c
Q. 13
Poisonous gas present in the exhaust fumes of car is
a. CH4
b. C2H2
c. CO
d. CO2
Ans.
c
Q.14 Which
one of the following is mainly responsible for depletion of ozone layer?
a. Methane
b. Carbon dioxide
c. Water
d. Chlorofluoro carbons
Ans.
d
Q.15 Ozone
is formed in upper atmosphere from oxygen by the action of
a. U.V. light
b. Cosmic rays
c. Free radicals
d. Nitrogen oxides
Ans.
a
Q.16 The
green house effect is caused by
a. NO2
b. NO
c. CO
d. CO2
Ans.
d
Q.17 DDT is
a. a fertilizer
b. biodegradable pollutant
c. non-biodegradable pollutants
d. greenhouse gas
Ans.
c
Q.18 Which
of the following is the coldest region?
a. Mesosphere
b. Troposphere
c. Stratosphere
d. Thermosphere
Ans.
a
Q.19 Hottest
region of the atmosphere is
a. Mesosphere
b. Stratosphere
c. Thermosphere
d. Troposphere
Ans.
c
Q.20 The
point of temperature inversion between troposphere and ionosphere is called
a. Stratosphere
b. Exosphere
c. Troposphere
d. Stratosphere
Ans.
d
Q.21 Solid
component of the earth consisting of soil, rocks and mountains called
a. Hydrosphere
b. Lithosphere
c. Atmosphere
d. Biosphere
Ans.
b
Q.22 Which
of the following is not regarded as a pollutant?
a. NO2
b. CO2
c. O3
d. Hydrocarbons
Ans.
b
Q.23 Which
of the following has largest concentration in acid rain?
a. HNO3
b. HCL
c. H2SO4
d. H2CO3
Ans.
c
Q.24 Which
of the following is not a greenhouse gas?
a. CO2
b. Water vapour
c. CH4
d. O2
Ans.
d
Q.25 UV
radiation from sun causes a reaction that produces
a. Carbon monoxide
b. Sulphur dioxide
c. Fluorides
d. Ozone
Ans.
d
Q.26 Ozone
hole refers to
a. hole in ozone layer
b. reduction in thickness of ozone layer in
troposphere
c. reduction in thickness of ozone layer in
stratosphere
d. increase in concentration of ozone
Ans.
c
Q.27 Which
of the following depletes ozone layer?
a. SO2
b. CO2
c. CO
d. NO and freons
Ans.
d
Q.28 White
lung cancer is caused by
a. Asbestos
b. Ailica
c. Paper
d. Textiles
Ans.
d
Q.29
Hydrogen and helium are found in which of the following regions?
a. Mesophere
b. Exosphere
c. Troposphere
d. Stratosphere
Ans.
b
Q.30
Depletion of ozone layer over Antarctica takes place during
a. Spring
b. November
c. Winter
d. Summer
Ans.
a
Q.31 Law of
octaves was enunciated by
a. Doberenier
b. Newland
c. L. Meyer
d. Mendeleef
Ans.
b
Q.32
Mendeleef’s periodic law is based on
a. atomic number
b. atomic weight
c. number of neutrons
d. none of these
Ans.
b
Q.33 In
modern periodic table elements are arranged in order of
a. increasing mass
b. increasing volume
c. increasing atomic number
d. alphabetically
Ans.
c
Q.34 Which
one of the following is not an element?
a. Diamond
b. Graphite
c. Silica
d. Ozone
Ans.
c
Q.35 Gas
deviates from ideal gas nature because molecules
a. are colorless
b. attract each other
c. contain covalent bond
d. show Brownian movement
Ans.
b
Q.36 The
element which shows least metallic character is
a. indium
b. boron
c. aluminum
d. gallium
Ans.
c
Q.37 Silicon
hydrides are called
a. silanes
b. silicon-nitrogen compound
c. silicides
d. silicates
Ans.
a
Q.38 Which
of the following is true for diamond?
a. It is good conductor of electricity
b. It is soft
c. It is a bad conductor of heat
d. It is made up of C,H and O
Ans.
c
Q.39 Natural
gas is
a. CO+H2
b. O2
c. CH4+O2+N2
d. None
Ans.
d
Q.40 The
temperature at which the volume of the gas is zero is
a. 0’C
b. 0 K
c. 0’F
d. None of these
Ans.
b
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