Question

Please NBA GK question for class 9th s i have to conduct quiz today

Answer 1

Smog is derived from smoke and fog which is also described as the type of fog having smoke or soot particles in it or a mixture of various gases with dust and water vapour and makes breathing difficult. It is a yellowish or blackish fog mainly formed by a mixture of air pollutants like nitrogen oxides, sulphur oxides and some other organic compounds that combine with sunlight to form ozone. Questions on smog will help you to understand what smog is and how it is harmful for us. This may also help in your various examination preparations.

1. SMOG is derived from :
A.Smoke
B.Fog
C.Both A and B
D.Only A
Ans. C

2. SMOG is caused due to:
A.Emissions from vehicles
B.From incinerators
C.Oil paints
D.All of the above
Ans. D

3. Who had coined the term SMOG?
A.Dr. Henry Antoine
B.Stephen Hawking
C.Nicolaus Copernicus
D.Nikola Tesla
Ans. A
What is Air Pollution

4. Secondary air pollutant is:
A.Ozone
B.Carbon monoxide
C.Nitrogen Dioxide
D.Sulphur dioxide
Ans. A

5. Which of the following is the major photochemical smog?
A.Peroxyl acetyl nitrate
B.Smog
C.Hydrogen peroxide
D.Chlorofluorocarbon
Ans. D

6.Which of the following diseases are caused by the smog?
(i)Rickets
(ii)Throat Cancer
(iii)Skin Cancer
(iv)Breathing Problem
Options are:
A.Both (i) and (ii)
B.Both (iii) and (iv)
C.(i), (ii) and (iii)
D.(i), (ii) and (iv)
Ans. D

Classification of Pollutants

7.Excess of fluoride in drinking water causes:
A.Lung disease
B.Intestinal infection
C.Fluorosis
D.None of the above
Ans. C