Environmental Issues Test

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Environmental Issues Test - 66

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Weekly Quiz Competition

Question 1
1 / -0

In an agriculture field there is a prevalence of the following organism and crop disease which are affection the crop yield badly ________________.

A
White rust

B
Leaf and strips rust

C
Black rot

D
jassids

Solution

White rust or white blister caused by the oomycete Albugo candida. White rust is an obligate parasite that attacks vegetative and flowering structures of the plants and can cause yellow lesions on the upper surface and white pustules (mainly on the underside) of leaves and can cause malformation of inflorescences. Dispersal and infection are favoured in cool and humid conditions in spring and autumn. Dispersal is mainly done by wind and water. Several species of Albugo can attack Brassicaceae crops and weeds, but Albugo candida is the main species identified in Brassica crops.

So, the correct option is 'White rust'.
Question 2
1 / -0

Ozone hole over Antarctica appear during

A
Spring

B
Autumn

C
Summer

D
Winter
Question 3
1 / -0

In countries near to polar region, the roads are sprinkled with $$CaCl_{2}$$. This is

A
to minimize the snow fall

B
to minimize pollution

C
to minimize the accumulation of dust on the road

D
to minimize wear & tear of roads
Question 4
1 / -0

The e-wastes:

A
Represents municipal solids

B
Is produced in developing countries and exported to developed countries

C
Are burried in land fills or incinerated

D
Does not involve recycling
Question 5
1 / -0

Snow blindness is caused by ____________.

A
U.V.B

B
Global warming

C
Radioactive pollution

D
Deforestation
Question 6
1 / -0

Which of the processes is used to dispose the radioactive wastes?

A
ground storage

B
ocean disposal

C
landfills

D
vary based on activity
Question 7
1 / -0

Chlorine atoms in the upper atmosphere cause the breakdown of ozone.
$$Cl+O_3\rightarrow O_2+ClO$$
$$ClO+O\rightarrow Cl+O_2$$
Which statements about these chlorine atoms are correct?
$$1$$. The chlorine atoms act as catalysts.
$$2$$. The chlorine atoms are free radicals.
$$3$$. The chlorine atoms are formed by heterolytic fission of a covalent bond in chlorofluorocarbons.

A
$$1, 2$$ and $$3$$ are correct

B
$$1$$ and $$2$$ only are correct

C
$$2$$ and $$3$$ only are correct

D
$$1$$ only is correct

Solution

Chlorine is able to destroy so much of the ozone because it acts as a catalyst
and it behaves like free radical because chlorine is formed by homolytic fission of CFC.
So only 1 and 2 are correct

Question 8

1 / -0

Which one of the following options correctly designate the percent contribution of gases (A, B, C and D) responsible of global warming?

	A	B	C	D
$$(1)$$	$$CH_4(20\%)$$	$$CFCs(14\%)$$	$$N_2O(6\%)$$	$$CO_2(60\%)$$
$$(2)$$	$$CFCs(20\%)$$	$$CO_2(14\%)$$	$$N_2O(6\%)$$	$$CH_4(60\%)$$
$$(3)$$	$$N_2O(20\%)$$	$$CH_4(14\%)$$	$$CFCs(6\%)$$	$$CO_2(60\%)$$
$$(4)$$	$$CH_4(20\%)$$	$$N_2O(14\%)$$	$$CFCs(6\%)$$	$$CO_2(60\%)$$

A

B

C

D

Solution

Global warming is the gradual increase in the overall temperature of the Earth’s atmosphere due to the greenhouse effect. The greenhouse effect is a natural process that warms the Earth's surface. Solar energy absorbed at Earth's surface is radiated back into the atmosphere as heat. As the heat makes its way through the atmosphere and backs out to space, greenhouse gases absorb much of it which results in warming of Earth's surface and the air above it.
The contribution of Green house gases such as methane($$CH_4$$),CFCs(Chloroflurocarbons),Nitrous oxide($$N_2$$O) and carbondioxide($$CO_2$$) to the global warming is about 20%,14%,6% and 60% respectively .
So, the correct answer is 'Option A'.

Question 9
1 / -0

Incineration of Municipal waste involves

A
Oxidation

B
Deduction

C
Redox action

D
Disintegration
Question 10
1 / -0

At which level of radioactivity released by radioactive waste can kill vegetation and cause irreparable injuries to humans and animals?

A
Interger level radiation

B
Low level radiation

C
Intermediate level radiation

D
High level radiation

Solution

Radioactive wastes release large amounts of neutron and gamma radiation. Intermediate level radiations causes serious injuries in vegetation (plants), humans and animals.
So, the correct answer is 'Intermediate level radiation'

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Re-Attempt Weekly Quiz Competition

Environmental Issues Test - 66

Result

Environmental Issues Test - 66

Score

-

Rank

-

SHARING IS CARING

Question 1

White rust

Leaf and strips rust

Black rot

jassids

Solution

Question 2

Spring

Autumn

Summer

Winter

Question 3

to minimize the snow fall

to minimize pollution

to minimize the accumulation of dust on the road

to minimize wear & tear of roads

Question 4

Represents municipal solids

Is produced in developing countries and exported to developed countries

Are burried in land fills or incinerated

Does not involve recycling

Question 5

U.V.B

Global warming

Radioactive pollution

Deforestation

Question 6

ground storage

ocean disposal

landfills

vary based on activity

Question 7

$$1, 2$$ and $$3$$ are correct

$$1$$ and $$2$$ only are correct

$$2$$ and $$3$$ only are correct

$$1$$ only is correct

Solution

Question 8

A

B

C

D

Solution

Question 9

Oxidation

Deduction

Redox action

Disintegration

Question 10

Interger level radiation

Low level radiation

Intermediate level radiation

High level radiation

Solution

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