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Previous year question hub

Environmental Chemistry - Inorganic Chemistry - Chemistry Previous Year Questions

Practice Environmental Chemistry - Inorganic Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

91Papers
10Years
96Questions
1Topics

Environmental Chemistry question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Environmental Chemistry. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 94 97.9%
Medium 2 2.1%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Multiple Choices 96 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
96 Qs

Most asked topics

Top topics across the included previous year papers.

Inorganic Chemistry
96 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Environmental Chemistry
96 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

JEE MAIN 2023 ONLINE 10TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 10TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 11TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 11TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 12TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 13TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 13TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 15TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 1ST FEBRUARY EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 1ST FEBRUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 24TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 24TH JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 25TH JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 29TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 29TH JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 30TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 30TH JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 31ST JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 6TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 8TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 8TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 24TH JUNE EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 25TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 25TH JUNE EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 25TH JUNE MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 26TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 26TH JUNE EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 26TH JUNE MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 27TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 27TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 27TH JUNE EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 27TH JUNE MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 28TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 28TH JUNE EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 29TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 29TH JUNE MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 27TH AUGUST EVENING SHIFT
2 Qs
JEE Main 2021 (Online) 24th February Evening Shift
1 Qs
JEE Main 2021 (Online) 24th February Morning Shift
1 Qs
JEE Main 2021 (Online) 25th February Evening Shift
1 Qs
JEE Main 2021 (Online) 25th February Morning Shift
1 Qs
JEE Main 2021 (Online) 26th February Morning Shift
1 Qs
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 16TH MARCH MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 17TH MARCH EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 18TH MARCH MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 1ST SEPTEMBER EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 26TH AUGUST EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 26TH AUGUST MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 27TH AUGUST MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT
1 Qs
JEE MAIN 2020 ONLINE 2ND SEPTEMBER MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 3RD SEPTEMBER EVENING SLOT
1 Qs
JEE MAIN 2020 ONLINE 3RD SEPTEMBER MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 4TH SEPTEMBER EVENING SLOT
1 Qs
JEE MAIN 2020 ONLINE 5TH SEPTEMBER MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 6TH SEPTEMBER MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 8TH JANUARY MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 9TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 11TH JANUARY EVENING SLOT
2 Qs
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT
2 Qs
JEE MAIN 2019 ONLINE 12TH JANUARY MORNING SLOT
2 Qs
JEE MAIN 2019 ONLINE 8TH APRIL MORNING SLOT
2 Qs
JEE MAIN 2019 ONLINE 10TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2019 ONLINE 10TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 10TH JANUARY MORNING SLOT
1 Qs
JEE MAIN 2019 ONLINE 12TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 12TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2019 ONLINE 12TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 8TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 9TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 9TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2019 ONLINE 9TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 9TH JANUARY MORNING SLOT
1 Qs
JEE MAIN 2018 OFFLINE
1 Qs
JEE MAIN 2018 ONLINE 15TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2017 OFFLINE
1 Qs
JEE MAIN 2017 ONLINE 8TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2017 ONLINE 9TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2016 OFFLINE
1 Qs
JEE MAIN 2016 ONLINE 10TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2016 ONLINE 9TH APRIL MORNING SLOT
1 Qs
AIEEE 2008
1 Qs
AIEEE 2004
1 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
JEE MAIN 2023 ONLINE 10TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 10TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 11TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 11TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 12TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 13TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 13TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 15TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 1ST FEBRUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 1ST FEBRUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 24TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 24TH JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 25TH JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 29TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 29TH JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 30TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 30TH JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 31ST JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 6TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 8TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 8TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2022 ONLINE 24TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 25TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 25TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 25TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 26TH JULY EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 26TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 26TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 27TH JULY EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 27TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 27TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 27TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 28TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 28TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 29TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 29TH JUNE MORNING SHIFT20221View paper
JEE Main 2021 (Online) 24th February Evening Shift20211View paper
JEE Main 2021 (Online) 24th February Morning Shift20211View paper
JEE Main 2021 (Online) 25th February Evening Shift20211View paper
JEE Main 2021 (Online) 25th February Morning Shift20211View paper
JEE Main 2021 (Online) 26th February Morning Shift20211View paper
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 16TH MARCH MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 17TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 18TH MARCH MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 1ST SEPTEMBER EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 26TH AUGUST EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 26TH AUGUST MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH AUGUST EVENING SHIFT20212View paper
JEE MAIN 2021 ONLINE 27TH AUGUST MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT20211View paper
JEE MAIN 2020 ONLINE 2ND SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 3RD SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 3RD SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 4TH SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 5TH SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 6TH SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 8TH JANUARY MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 9TH JANUARY EVENING SLOT20201View paper
JEE MAIN 2019 ONLINE 10TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 10TH JANUARY EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 10TH JANUARY MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 11TH JANUARY EVENING SLOT20192View paper
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT20192View paper
JEE MAIN 2019 ONLINE 12TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 12TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 12TH JANUARY EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 12TH JANUARY MORNING SLOT20192View paper
JEE MAIN 2019 ONLINE 8TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 8TH APRIL MORNING SLOT20192View paper
JEE MAIN 2019 ONLINE 9TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH JANUARY EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH JANUARY MORNING SLOT20191View paper
JEE MAIN 2018 OFFLINE20181View paper
JEE MAIN 2018 ONLINE 15TH APRIL EVENING SLOT20181View paper
JEE MAIN 2017 OFFLINE20171View paper
JEE MAIN 2017 ONLINE 8TH APRIL MORNING SLOT20171View paper
JEE MAIN 2017 ONLINE 9TH APRIL MORNING SLOT20171View paper
JEE MAIN 2016 OFFLINE20161View paper
JEE MAIN 2016 ONLINE 10TH APRIL MORNING SLOT20161View paper
JEE MAIN 2016 ONLINE 9TH APRIL MORNING SLOT20161View paper
AIEEE 200820081View paper
AIEEE 200420041View paper

All Environmental Chemistry previous year questions

Practice every matching question in batches of 20, with every available option.

1
2004 · Chemistry · Inorganic Chemistry · Environmental Chemistry
AIEEE 2004
The smog is essentially caused by the presence of :
A
O2 and O3c
B
O3 and N2
C
Oxides of sulphur and nitrogen
D
O2 and N2
Open complete paper
2
2008 · Chemistry · Inorganic Chemistry · Environmental Chemistry
AIEEE 2008
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 rains is mostly because of oxides of nitrogen and sulphur
Open complete paper
3
2016 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2016 OFFLINE
The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of :
A
Lead
B
Nitrate
C
Iron
D
Fluoride
Open complete paper
4
2016 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2016 ONLINE 10TH APRIL MORNING SLOT
Which one of the following substances used in dry cleaning is a better strategy to control environmental pollution?
A
Tetrachloroethylene
B
Carbon dioxide
C
Sulphur dioxide
D
Nitrogen dioxide
Open complete paper
5
2016 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2016 ONLINE 9TH APRIL MORNING SLOT
BOD stands for :
A
Biological Oxygen Demand
B
Bacterial Oxidation Demand
C
Biochemical Oxygen Demand
D
Biochemical Oxidation Demand
Open complete paper
6
2017 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2017 OFFLINE
A water sample has ppm level concentration of following anions
F- = 10; \(SO_4^{2-}\) = 100; \(NO_3^-\) = 50
The anion/anions that make/makes the water sample unsuitable for drinking is/are :
A
both \(SO_4^{2-}\) and \(NO_3^-\)
B
only F-
C
only \(SO_4^{2-}\)
D
only \(NO_3^-\)
Open complete paper
7
2017 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2017 ONLINE 8TH APRIL MORNING SLOT
Identify the pollutant gases largely responsible for the discoloured and lustreless nature of marble of the Taj Mahal.
A
O3 and CO2
B
CO2 and NO2
C
SO2 and NO2
D
SO2 and O3
Open complete paper
8
2017 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2017 ONLINE 9TH APRIL MORNING SLOT
Which of the following is a set of greenhouse gases?
A
CH4, O3, N2, SO2
B
O3, N2, CO2, NO2
C
O3, NO2, SO2, Cl2
D
CO2, CH4, N2O, O3
Open complete paper
9
2018 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2018 OFFLINE
The recommended concentration of fluoride ion in drinking water is up to 1 ppm as fluoride ion is required to make teeth enamel harder by converting
[3Ca3 (PO4)2.Ca(OH)2] to
A
[3{Ca(OH)2}. CaF2]
B
[CaF2]
C
[3(CaF2). Ca(OH)2]
D
[3Ca3(PO4)2. CaF2]
Open complete paper
10
2018 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2018 ONLINE 15TH APRIL EVENING SLOT
Biochemical Oxygen Demand (BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct ?
A
Aerobic bacteria decrease the BOD value.
B
Anaerobic bacteria increase the BOD value.
C
Clean water has BOD value higher than 10 ppm.
D
Polluted water has BOD value higher than 10 ppm.
Open complete paper
11
2019 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2019 ONLINE 10TH APRIL EVENING SLOT
Air pollution that occurs in sunlight is :
A
oxidising smog
B
reducing smog
C
fog
D
acid rain
Open complete paper
12
2019 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
The regions of the atmosphere, where clouds form and where we live, respectively, are :
A
Stratosphere and Stratosphere
B
Stratosphere and Troposphere
C
Troposphere and Stratosphere
D
Troposphere and Troposphere
Open complete paper
13
2019 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2019 ONLINE 10TH JANUARY EVENING SLOT
The reaction that is NOT involved in the ozone layer depletion mechanism in the stratosphere is :
A
\(Cl\mathop O\limits^ \bullet \left( g \right) + O\left( g \right) \to \mathop C\limits^ \bullet l\left( g \right) + {O_2}(g)\)
B
\(C{F_2}C{l_2}\left( g \right)\,\buildrel {uv} \over \longrightarrow \mathop {\,C}\limits^ \bullet l\left( g \right) + \mathop C\limits^ \bullet {F_2}Cl\left( g \right)\)
C
\(C{H_4} + 2{O_3}\, \to \,3C{H_2} = O + 3{H_2}O\)
D
\(HOCl\left( g \right)\,\buildrel {hv} \over \longrightarrow \,\mathop O\limits^ \bullet H\left( g \right) + \mathop C\limits^ \bullet l\left( g \right)\)
Open complete paper
14
2019 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2019 ONLINE 10TH JANUARY MORNING SLOT
Water filled in two glasses A and B have BOD values of 10 and 20, respectively. The correct statement regarding them, is :
A
B is more polluted than A.
B
A is suitable for drinking, whereas B is not .
C
Both A and B are suitable for dirnking
D
A is more polluted than B.
Open complete paper
15
2019 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2019 ONLINE 11TH JANUARY EVENING SLOT
Taj Mahal is being slowly disfigured and discoloured. This is primarily due to :
A
acid rain
B
soil pollution
C
global warming
D
water pollution
Open complete paper
16
2019 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2019 ONLINE 11TH JANUARY EVENING SLOT
The higher concentration of which gas in air can cause stiffness of flower buds?
A
CO2
B
SO2
C
NO2
D
CO
Open complete paper
17
2019 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT
Peroxyacetyl nitrate (PAN), an eye irritant is produced by :
A
classical smog
B
acid rain
C
photochemical smog
D
organic waste
Open complete paper
18
2019 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT
The concentration of dissolved oxygen (DO) in cold water can go upto :
A
14 ppm
B
16 ppm
C
8 ppm
D
10 ppm
Open complete paper
19
2019 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2019 ONLINE 12TH APRIL EVENING SLOT
The primary pollutant that leads to photochemical smog is :
A
acrolein
B
ozone
C
sulphur dioxide
D
nitrogen oxides
Open complete paper
20
2019 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2019 ONLINE 12TH APRIL MORNING SLOT
The correct set of species responsible for the photochemical smog is :
A
NO, NO2, O3 and hydrocarbons
B
N2, NO2 and hydrocarbons
C
CO2, NO2, SO2 and hydrocarbons
D
N2, O2, O3 and hydrocarbons
Open complete paper

Showing 20 of 96 questions