Environmental Chemistry Test

Result

Environmental Chemistry Test - 73

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Weekly Quiz Competition

Question 1
1 / -0

The reaction that is NOT involved in the ozone layer depletion mechanism in the stratosphere is:

A

B

C

D

Solution
Question 2
1 / -0

Which of the following is not an example of green chemistry?

A
Reacting methylamine and phosgene to produce methyl isocyanate

B
replacement of CFCs by $${ CO }_{ 2 }$$ as blowing agent in the manufacture of polystyrene foam sheet

C
catalytic dehydrogenation of the diethanol amine without using cyanide and formaldehyde

D
replacement of organotins by 'sea-nine' as antifouling compound in sea marines

Solution
Question 3
1 / -0

Which of the folowing oxides of nitrogen is not a common air pollutant ?

A
$$ NO_2$$

B
$$ N_2O $$

C
$$ NO $$

D
$$ N_2O_5 $$

Solution
Question 4
1 / -0

Stopping the usage of insecticides means _________.

A
Control on using insecticides

B
Ban on insecticides

C
Following Eco-friendly agricultural methods

D
Bio-chemical reaction

Solution

Insecticides are chemicals used to control insects by killing them or preventing them from engaging in undesirable or destructive behaviours. Insecticides also have a negative impact, like toxic residues in food, water, air and soil, resurgence and resistance of insect pests, and effect on non-target organisms. So we need to control using insecticides and should follow eco-friendly agricultural methods.
Hence the correct answer is option C.
Question 5
1 / -0

Choose the correct options:

A
Acid rain don't cause any damange

B
The gases responsible for greenhouse effects are $$ \mathrm { CO } _ { 2 } , $$ water vapour, $$ \mathrm { CH } _ { 4 } $$ and ozone.

C
The order of contribution to the acid rain is: $$ \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } < \mathrm { HNO } _ { 3 } < \mathrm { HCl } $$

D
Both $$ ( \mathrm { A } ) $$ and $$ ( \mathrm { B } ) $$
Question 6
1 / -0

Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine air borne particles which lead to?

A
Photochemical smog

B
Dry acid deposition

C
Industrial smog

D
Wet acid deposition
Question 7
1 / -0

_____________ is the first country to have phased out the CFCs and HCFCs which are responsible for the depletion of the ozone layer

A
Denmark

B
Germany

C
France

D
Spain

Solution
Question 8
1 / -0

The combination of nitrogen oxides and hydrocarbons in the presence of the sunlight causes

A
Global warming

B
Smog

C
Ozone hole in the atmosphere

D
Acid rain
Question 9
1 / -0

Pottery workers are at high risk of _________ lung disease

A
Asbestosis

B
Asthma

C
Silicosis

D
Bronchitis
Question 10
1 / -0

Snow blindness is caused due to

A
Global warming

B
Ozone depletion

C
Greenhouse effect

D
Bio magnification

Solution

Snow blindness also called as photokeratitis occurs due to reflection of UV light from the surface of the snow, where the layer of ozone is thin and allows maximum penetration of UV light on the surface of the earth. This condition is majorly observed at the poles.
So, the correct answer is 'ozone depletion'