Environmental Chemistry Test

Result

Environmental Chemistry Test - 54

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
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 2
1 / -0

Which pollutant gas is produced by the decomposition of vegetation?

A
Carbon monoxide

B
Methane

C
Nitrogen dioxide

D
Sulfur dioxide

Solution

Methane, CH₄, is a gas that can be produced by:
Decomposition of vegetation and from waste gases produced from the digestion in animals.
Question 3
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 are correct when referring to these chlorine atoms?
$$1$$. 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

In the given reaction, i.e., decomposition of ozone, the chlorine atoms are free radicals and acts as catalysts.
Chlorine initiates the breakdown of ozone and combines with a freed oxygen to create two oxygen molecules.
Hence only $$1$$ and $$2$$ are correct.
Question 4
1 / -0

Carbon monoxide, $$CO$$, nitrogen dioxide, $$NO_{2}$$, and sulfur dioxide, $$SO_{2}$$, are all atmospheric
pollutants.
Which reaction concerning these compounds occurs in the atmosphere?

A
$$CO$$ is spontaneously oxidised to $$CO_{2}$$

B
$$NO_{2}$$ is reduced to $$NO$$ by $$CO$$

C
$$NO_{2}$$ is reduced to $$NO$$ by $$SO_{2}$$

D
$$SO_{2}$$ is oxidised to $$SO_{3}$$ by $$CO_{2}$$

Solution

$$N{O}_{2}$$ is reduced by $$S{O}_{2}$$ to $$NO$$, i.e.,
$$N{O}_{2} + S{O}_{2} \longrightarrow NO + S{O}_{3}$$
Question 5
1 / -0

Which pair of compounds would make an NPK fertiliser?

A
Ammonium sulfate and potassium phosphate

B
Calcium hydroxide and ammonium nitrate

C
Calcium phosphate and potassium chloride

D
Palcium phosphate and potassium chloride

Solution

Compound Fertilizer is the fertilizer which contains two or three nutrients of N,P,K. NPK fertilizers are three-component fertilizers providing nitrogen, phosphorus, and potassium.
Question 6
1 / -0

All except which cause pollution:

A
thermal power plant

B
hydro - electric plant

C
nuclear power plant

D
automobiles

Solution

Hydro-electric plant is not responsible for pollution.
Question 7
1 / -0

Fog that forms off the coast of Newfoundland is mainly a form of:

A
Advection fog

B
Frontal fog

C
Steam fog

D
Radiation fog

Solution

A. Advection fog
Advection fog forms due to moist air moving over a colder surface, and the resulting cooling of the near-surface air to below its dew-point temperature. Advection fog occurs over both water (e.g., steam fog) and land.
Question 8
1 / -0

Antiknocking agent used for unleaded gasoline is:

A
$$BXT$$

B
$$TBA$$

C
$$MTBE$$

D
all of these

Solution

An antiknock agent is used for unleaded gasoline to reduce engine knocking, helps in increasing efficiency by raising the temperature and pressure. All of these are Antiknocking agents.
Question 9
1 / -0

Which one is not the correct statement?

Pollution means:

A
the presence of anything in the environment in excess of required limit

B
anything put into the environment which was not there in its natural state.

C
direct or indirect changes in one or more components of the ecosystem which are not harmful to living organisms

D
international release of any chemical substance in the environment with harmful effects

Solution
Question 10
1 / -0

Which one is not a correct statement? To minimise pollution:

A
manures and biofertilizers should be used in place of chemical fertilizers

B
all nuclear tests must be stopped

C
green belts in cities should be developed

D
domestic garbage must be burnt

Solution

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Environmental Chemistry Test - 54

Result

Environmental Chemistry Test - 54

Score

-

Rank

-

SHARING IS CARING

Question 1

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

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

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

$$1$$ only is correct

Solution

Question 2

Carbon monoxide

Methane

Nitrogen dioxide

Sulfur dioxide

Solution

Question 3

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

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

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

$$1$$ only is correct

Solution

Question 4

$$CO$$ is spontaneously oxidised to $$CO_{2}$$

$$NO_{2}$$ is reduced to $$NO$$ by $$CO$$

$$NO_{2}$$ is reduced to $$NO$$ by $$SO_{2}$$

$$SO_{2}$$ is oxidised to $$SO_{3}$$ by $$CO_{2}$$

Solution

Question 5

Ammonium sulfate and potassium phosphate

Calcium hydroxide and ammonium nitrate

Calcium phosphate and potassium chloride

Palcium phosphate and potassium chloride

Solution

Question 6

thermal power plant

hydro - electric plant

nuclear power plant

automobiles

Solution

Question 7

Advection fog

Frontal fog

Steam fog

Radiation fog

Solution

Question 8

$$BXT$$

$$TBA$$

$$MTBE$$

all of these

Solution

Question 9

the presence of anything in the environment in excess of required limit

anything put into the environment which was not there in its natural state.

direct or indirect changes in one or more components of the ecosystem which are not harmful to living organisms

international release of any chemical substance in the environment with harmful effects

Solution

Question 10

manures and biofertilizers should be used in place of chemical fertilizers

all nuclear tests must be stopped

green belts in cities should be developed

domestic garbage must be burnt

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.