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

Which one is not a pollutant normally?

Question # 2

Fungicides are the pesticides which

Question # 3

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

Question # 4

Air pollution is not caused by

Question # 5

Mottling of teeth is due to presence of an element in drinking water

Question # 6

Burning of fossil fuels is the main source of pollution

Question # 7

Sulphur dioxide affects

Question # 8

In purification of potable water the coagulant used is

Question # 9

Which gas is not a constituent of atmosphere

Question # 10

Water pollution is mainly due to

Question # 11

Polycyolic aromatic hydrocarbons are taught to be

Question # 12

Drawback DDT as presticide is

Question # 13

Carbon monoxide is pollutant as it

Question # 14

Classical smog occurs in palces of

Question # 15

What is the cause of water pollution

Question # 16

Chief source of water and soil pollution is

Question # 17

Phosphate pollution is caused by

Question # 18

B.O.D is connected with

Question # 19

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

Question # 20

Pollution is

Question # 21

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 22

Oceans cove ______ percent of the surface of the earth

Question # 23

Result of ozone hole is

Question # 24

Pick up the correct statement

Question # 25

A pollutant affects

Question # 26

Ozone hole is maximum over

Question # 27

Exposure to CO results in

Question # 28

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

Question # 29

Water is often treated with chlorine to

Question # 30

SO2Makes ______ acid rains

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
    Zainab Tahira 14 - Jun - 2026 03 Min 29 Sec 104/120
  • Z
    Zaman Shehzad 24 - May - 2024 09 Min 53 Sec 95/120
  • M
    Muhammad Uzair 05 - Jun - 2024 03 Min 33 Sec 90/120
  • 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 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
2 One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
3 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
4 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
5 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
6 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
7 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
8 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
9 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
10 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!