NEET Chemistry Chapter Wise Mock Test – Environmental Chemistry
Question 1:
The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?
(a) CO
(b) Hydrocarbon
(c) Peroxy acetyl nitrate
(d) NO
Question 2:
The greatest affinity for haemoglobin is shown by
(a) NO
(b) CO
(c) 02
(d) C02
Question 3:
Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because
(a) the reaction is endothermic and required very high temperature
(b) the reaction can be initiated only in the presence of a catalyst
(c) oxides of nitrogen are unstable
(d) N2 and 02 are unreactive
Question 4:
Which of the following gases is not a greenhouse gas?
(a) CO
(b) 03
(c) CO
(d) H20 vapour
Question 5:
DDT is
(a)greenhouse gas
(b) degradable pollutant
(c) non-degradable pollutant
(d) None of these
Question 6:
Atmospheric poHutant is
(a)C02
(b)Co
(c) 02
(d)N2
Question 7:
Sulphur dioxide present exhaust causes
(a) respiratory and lung disease
(b) reduction in plants productivity due to acid rain
(c) corrosion of building materials
(d) All of the above
Question 8:
Freon used as refrigerant is
(a) CF2=CF2
(b) CH2F2
(C)CCI2F2
(d) CF4
Question 9:
Gas released during Bhopal tragedy was
(a) methyl isocyanate
(b) ethyl isocyanate
(c) sodium isothiocyanate
(d) potassium isothiocyanate
Question 10:
Carbon monoxide is harmful to human beings as it
(a) is destructive to ozone
(b) is carcinogenic
(c) has higher affinity for haemoglobin as compared to oxygen
(d) All of the above
Question 11:
A body which allows the short wavelength incoming solar radiation to enter in but does not allow long wave outgoing infrared radiation to escape out is called
(a) global warming
(b) greenhouse
(c) ionosphere
(d) None of these
Question 12:
Growing more trees help to
(a) reduce 02 in air
(b) increase C02 in the air
(c) reduce C02only in the air
(d) reduce C02 and increase 02 in the air
Question 13:
Highly toxic gas which causes headache, visual difficulty, paralysis and even death is
(a)03
(b) N2
(c) CO
(d) All of these
Question 14:
Persons working in cement plants and limestone quarries are more prone to disease like
(a) cancer
(b) asthma
(c) silicosis
(d) pneumoconiosis
Question 15:
Which of the following statements is wrong?
(a) Polar stratospheric clouds (PSCs) are clouds formed over Antarctica
(b) Acid rain dissolves heavy metals such as Cu, Pb, Hg and Al from soil, rocks and sediments
(c) H2S04is major contributor to acid rain, HN03 ranks second and HCI third in this respect
(d) Fishes grow in warm as well as in cold water
Question 16:
Acid rain is produced by
(a) Excess N02 and S02 from burning fossil fuels
(b) Excess release of CO by incomplete combustion
(c) Excess formation of C02 by combustion and animal respiration
(d) None of the above
Question 17:
Photochemical smog is caused by
(a) 03
(b) CO
(c) C02
(d) N02
Question 18:
The smog is essentially caused by the presence of
(a) 02 and N2
(b) oxides of S and N
(c) 03 and N2
(d) 02 and 03
Question 19:
Classical smog occurs in places of
(a) excess S02
(b) low temperature
(c) high temperature
(d) exces NH3
Question 20:
Ozone hole refers to
(a) reduction of thickness of ozone in troposphere
(b) reduction of thickness of ozone in stratosphere
(c) increase concentration of ozone
(d) All of the above
Question 21:
Ozone hole is maximum over
(a) India
(b) Africa
(c) Antarctica
(d) Europe
Question 22:
Identify the wrong statements in the following.
(a) Chlorofluorocarbons are responsible for ozone layer depletion
(b) Greenhouse effect is responsible for global warming
(c) Ozone layer does not permit Infrared radiation from the sun to reach the earth
(d) Acid rain is mostly because of oxides of nitrogen and sulphur
Question 23:
Which of the following statement is correct?
(a) Ozone hole is a hole formed in stratosphere from which ozone comes out
(b) Ozone hole is a hole formed in the troposphere from which ozone comes out
(c) Ozone hole is thinning of ozone layer of stratosphere at some places
(d) Ozone hole means vanishing of ozone layer around the earth
Question 24:
Addition of phosphate and nitrate fertilizers into water leads to
(a) reduced algal growth
(b) increased algal growth
(c) increased growth of decomposers
(d) eutrophication
Question 25:
Phosphatic pollution is caused by
(a) weathering of phosphate rocks only
(b) agricultural fertilizers
(c) phosphate rocks and sewage
(d) sewage and agricultural fertilizers
Question 26:
Sewage water is purified by
(a) microorganisms
(b) fishes
(c) aquatic plants
(d) All of these
Question 27:
Eutrophication causes reduction in
(a) dissolved oxygen
(b) dissolved nitrogen
(c) dissolved salts
(d) All of these
Question 28:
Lead in water can cause
(a) eye disease
(b) arthritis
(c) kidney damage
(d) hair falling
Question 29:
The principal gas evolved from sludge digestion tank is
(a) methane
(b) carbon dioxide
(c) carbon monoxide
(d) nitrogen
Question 30:
Mottling of teeth is due to the presence of following element in drinking water.
(a) mercury
(b) lead
(c) chlorine
(d) fluorine
Direction (Q. Nos. 31-32) In the following question more than one of the answers may be correct. Select the correct answers and mark it according to the codes.
Codes
(a) 1, 2 and 3 are correct
(b) 1 and 2 are correct
(c) 2 and 4 are correct
(d) 1 and 3 are correct
Question 31:
Phosphate containing fertilizer cause water pollution. Addition of such compounds in water bodies causes
1. enhanced growth of algae
2. decrease in amount of dissolved oxygen in water
3. deposition of calcium phosphate
4. increase in fish population
Question 32:
Which of the following are constituents of Los Angeles smog?
1. PAN
2. SOx
3. NOx
4. Humidity
Question 33:
Direction (Q. Nos. 34-35) Each of these questions contains two statements: Assertion jxntj Reason. Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select one of the codes (a), (b), (c) and (d) given below.
(a) Assertion is true, Reason is true; Reason is the correct explanation for Assertion
(b) Assertion is true, Reason is true; Reason is not the correct explanation for Assertion
(c) Assertion is true, Reason is false
(d) Assertion is false, Reason is true
Question 34:
Assertion For greenhouse effect presence of C02 is essential.
Reason With increase in concentration of C02, greenhouse effect increases.
Question 35:
Assertion Suspended particulate matter (SPM) is an important pollutant released by diesel vehicles.
Reason Catalytic converters greatly reduce pollution caused by automobiles.
Question 36:
Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other?
(a) Forms ‘acid rain’
(b) Is a reducing agent
(c) Is soluble in water
(d) Is used as a food preservative
Question 37:
Which one of the following is not a common component of photochemical smog?
(a) Ozone
(b) Acrolein
(c)Peroxyacetylnitrate
(d) Chlorofluorocarbons
Question 38:
Which one of the following statements regarding photochemical smog is not correct?
(a) Carbon monoxide does not play any role in photochemical smog formation
(b) Photochemical smog is an oxidising agent in character
(c) Photochemical smog is formed through photochemical reaction involving solar energy
(d) Photochemical smog does not cause irritation in eyes and throat
Question 39:
The basic component of the smog is
(a) PAN
(b) PBN
(c) N02
(d) All of these
Question 40:
Which one of the following statements is not true?
(a) Concentration of BOD below 6 ppm is good for the growth of fish
(b) Clean water would have a BOD value of less than 5 ppm
(c) Oxides of sulphur, nitogen and carbon are the most widespread air pollutant
(d) pH of drinking water should be between 5.5-9.5
Answers:
