Which pollutant is not primary pollutant?
- Ash
- SO3
- Fumes
- Smoke
Submitted by :- Muhammad Nawaz
CHEMISTRY
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The reduction in ozone layer would lead to
- Temperature changes
- Increase in UV radiation on earth
- Cancer
- All of these
Submitted by :- Muhammad Nawaz
Chloroflororocarbons (CFC) are widely used as coolants in
- Air conditioners
- Aerosol propellants
- Clearing solvents
- All of these
Submitted by :- Muhammad Nawaz
Ozone filters out radiation below?
- 1000 Å
- 2000 Å
- 4000 Å
- 3000 Å
Submitted by :- Muhammad Nawaz
Which gas defends us form harmful effect of UV radiation?
A. O3
B. NO2
C. CO
D. SO₂
Submitted by :- Muhammad Nawaz
Secondary cell is_____________________?
A. rechargeable
B. non rechargeable
C. electrolytic cell
D. Daniel cell
Submitted by :- Jamil Ahmed
Greater value of standard reduction potential greater will be tendency__________________?
A. to get oxidized
B. to get reduced
C. to accept electrons
D. both B and C
Submitted by :- Jamil Ahmed
Electrode potential of Zn is__________________?
A. oxidation
B. reduction
C. oxidation-reduction
D. depends on the nature of the coupled electrode
Submitted by :- Jamil Ahmed
Potential of SHE is considered as__________________?
A. zero
B. unity
C. constant
D. multiple of 1
Submitted by :- Jamil Ahmed
Ered of an element cab be calculated by comparing it with _______________?
A. New electrode of same element
B. SHE (standard hydrogen electron)
C. 1M solution of ions of respective element
D. 2M solution of HCI
Submitted by :- Jamil Ahmed