ECAT Pre Engineering Chemistry Chapter 27 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

Try The MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Chemistry Chapter 27 Environmental Chemistry

00:00
Question # 1

Classical smog occurs in palces of

Question # 2

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 3

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 4

Increased asthmatic attacks in certain seasons are related to

Question # 5

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 6

Which of the following human activities are contaminating surface and ground waters

Question # 7

Which gas is not a constituent of atmosphere

Question # 8

Which one is not a pollutant normally?

Question # 9

Chromium (VI) is highly toxic and can cause

Question # 10

Ecosystem is a smaller unit of

Question # 11

Polycyolic aromatic hydrocarbons are taught to be

Question # 12

Pollution is

Question # 13

NO and NO2gases in atmosphere are represented by

Question # 14

Ecology is a science of environment and deals specially with

Question # 15

The region of earth capable of supporting life is

Question # 16

Shahi Qilla may be destroyed by

Question # 17

Depletion of ozone layer is due to

Question # 18

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 19

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 20

Which heavy metals do not have any safe limits

Question # 21

The film forming components of paints are

Question # 22

What is the cause of water pollution

Question # 23

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 24

Chief source of water and soil pollution is

Question # 25

B.O.D is connected with

Question # 26

Which is not the affect of polluted air on environment

Question # 27

Increasing skin cancer and high mutation rate are due to

Question # 28

Which step is unnecessary for purification of water for drinking purposes

Question # 29

In Antarctica ozone depletion is due to the formation of following compound

Question # 30

Acid rain is due to increase in atmospheric concentration of

Submit

Prepare Complete Set Wise ECAT Chemistry Chapter 27 Environmental Chemistry MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Chemistry Chapter 27 Environmental Chemistry MCQ`s Test

  • F
    Farzand Shah Farzand Shah 10 - Apr - 2024 03 Min 00 Sec 120/120
  • T
    Tanzeel Ur Rehman 28 - May - 2024 04 Min 15 Sec 115/120
  • M
    M Umer Arain 24 - Dec - 2024 00 Min 04 Sec 110/120
  • A
    Alyna Fatima 25 - Mar - 2024 03 Min 12 Sec 110/120
  • S
    Sarosh Amjad 21 - Jan - 2025 03 Min 44 Sec 110/120
  • A
    Abid Ali 19 - May - 2024 10 Min 33 Sec 110/120
  • A
    Alyna Fatima 25 - Mar - 2024 03 Min 28 Sec 105/120
  • Z
    Zaman Shehzad 24 - May - 2024 09 Min 53 Sec 95/120
  • M
    Muhammad Uzair 05 - Jun - 2024 03 Min 33 Sec 90/120
  • A
    Azeema Siddique Muhammad Siddique 13 - Mar - 2024 04 Min 24 Sec 90/120
  • Z
    Zargaii 92 29 - May - 2024 06 Min 59 Sec 90/120
  • C
    Cricket Expert's 27 - May - 2024 03 Min 01 Sec 85/120
  • M
    Muhammad Saleem 06 - Dec - 2024 13 Min 11 Sec 85/120
  • T
    tayyab ali 20 - May - 2024 19 Min 22 Sec 80/120
  • C
    Computer mail 10 - Feb - 2026 07 Min 01 Sec 76/120

ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
2 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
3 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
4 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
5 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there
6 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
7 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
8 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
9 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
10 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs

Test Questions

Is this page helpful?