Are burried in land fills or incinerated

Is produced in developing countries and exported to developed countries

MCQ Questions for Class 12 Medical Biology Environmental Issues Quiz 11

Biomedical waste is very hazardous for human life.

0%
True
0%
False

Which harmful radiations are absorbed by ozen layer?

0%
UV
0%
X-RAY
0%
Visible light
0%
Gamma rays

Explanation

The ozone layer or ozone( $O_3$ ) shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet(UV)radiation.
Overexposure to UV radiation may cause skin cancer, damage of the eye and the suppression of the immune system.
Hence The harmful radiations are absorbed by ozone layer UV.
So, the correct answer is 'UV'.

Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m. This specific statement is true for

0%
Radio active materials
0%
U. V. radiations pollutants
0%
Particle pollutants
0%
Radioactive pollutants

Why ozone is known as 'chemical weed ' ?

0%
Because it is formed by chemical reactions
0%
Because it is harmful as well useful
0%
Because it is harmful, just like weeds for mankind
0%
Ozone is not designated as chemical weed

Ozone hole over Antarctica appear during

0%
Spring
0%
Autumn
0%
Summer
0%
Winter

BOD of lake becomes high by :-

0%
Vehicles
0%
Wind mill
0%
Smoke and ammonia
0%
Detergents

Snow blindness is caused by ____________.

0%
U.V.B
0%
Global warming
0%
Radioactive pollution
0%
Deforestation

The e-wastes:

0%
Represents municipal solids
0%
Is produced in developing countries and exported to developed countries
0%
Are burried in land fills or incinerated
0%
Does not involve recycling

Control of automobile air pollution can be done by all except:

0%
use of biopetrol
0%
periodic check up of pollution control for all vehicles
0%
use of low sulphur diesel or CNG
0%
prefering individual vehicles.

Explanation

$\textbf{Correct option: }$ D

$\textbf{Solution: }$

$\textbf{Option (A) }$

$\bullet$ Biogasoline or biopetrol is a type of gasoline that is produced from algae biomass.

$\textbf{Option (B,C) }$

$\bullet$ Controlling the use of vehicular pollution by using the CNG that is cleaner fuel as compared to diesel or petrol.

$\bullet$ The separation of pollutants which involves the efficient use of sulphur free and lead free fuels in automobiles.

$\bullet$ The use of electrostatic precipitators (ESPs) stands for electrostatic precipitator, which is used as the separator device that allows the separation of particulate matter from polluted air.

$\textbf{Option (D) }$

$\bullet$ The population should avoid using separate and individual vehicles.

$\bullet$ Instead, we should always prefer using bicycles or public transport for reducing pollution.

Hence, the correct option is (D)

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

0%
A
0%
B
0%
C
0%
D

Explanation

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'.

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

0%
Interger level radiation
0%
Low level radiation
0%
Intermediate level radiation
0%
High level radiation

All except one mentioned below is an incorrectly mentioned rule framed under Environment (Protection) act,Identify it.

0%
Ozone Depleting Substanes Rules, 2000
0%
Harzardous Wastes Rules, 1989
0%
Air Prevention and Control of Pollution Act, 1981
0%
Biomedical Wastes Rules, 1998

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

0%
ground storage
0%
ocean disposal
0%
landfills
0%
vary based on activity

The atmospheric greenhouse effect is produced mainly by the:

0%
Absorption and re-emission of visible light by the atmosphere
0%
Absorption and re-emission of ultraviolet radiation by the atmosphere
0%
Absorption and re-emission of infrared radiation by the atmosphere
0%
Absorption and re-emission of visible light by clouds

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.

0%
$1, 2$ and $3$ are correct
0%
$1$ and $2$ only are correct
0%
$2$ and $3$ only are correct
0%
$1$ only is correct

Incineration of Municipal waste involves

0%
Oxidation
0%
Deduction
0%
Redox action
0%
Disintegration

The maximum in daytime surface temperature typically occurs _____________ the earth receives its most intense solar radiation.

0%
Before
0%
After
0%
Exactly when
0%
Long time

At night, low clouds:

0%
Enhance the atmospheric greenhouse effect
0%
Weaken the atmospheric greenhouse effect
0%
Are often caused by the atmospheric greenhouse effect
0%
Have no effect on the atmospheric greenhouse effect

Of the gases listed below, which is NOT believed to be responsible for enhancing the earth's greenhouse effect?

0%
Chlorofluorocarbons $(CFC_{s})$
0%
Molecular oxygen $(O_{2})$
0%
Nitrous oxide $(N_{2}O)$
0%
Carbon dioxide $(CO_{2})$

Which of the radioactive material is largely associated with bone cancer

0%
Radium-226
0%
Thorium-232
0%
Strontium-90
0%
Iodine

Example for a physical pollutant

0%
Water
0%
Air
0%
Radiation
0%
Plant

Solid waste increases with an increase in

0%
Road Construction
0%
Educational Institutions
0%
Urbanization
0%
Farms

The earth's radiative equilibrium temperature is:

0%
The temperature at which the earth is absorbing solar radiation and emitting infrared radiation at equal rates
0%
The temperature at which the earth is radiating energy at maximum intensity
0%
The average temperature the earth must maintain to prevent the oceans from freezing solid
0%
The temperature at which rates of evaporation and condensation on the earth are in balance

Man made sources of radiation pollution are:

0%
mining
0%
explosion of nuclear weapons
0%
nuclear fuels and preparation of radioactive isotopes
0%
all of these

Commonly used radioactive isotopes in scientific research

0%
14 C
0%
125 I
0%
32 P
0%
all of these

Primary treatment reduces BOD, ranges from;

0%
30-60%
0%
0-70%
0%
30-35%
0%
20-80%

The cutting down of trees and setting them on fire and raising crops on the resulting ash is called:

0%
Pyrolysis
0%
Jhum
0%
Taungya system
0%
Shift cultivation

A strong radiation inversion is more likely to occur on a:

0%
Warm, windy night.
0%
Cool, windy night.
0%
Rainy night with light winds.
0%
Clear night with light winds.

UV radiations is injurious to plants because it

0%
break phosphate bonds
0%
increases respiration
0%
causes dehydration
0%
causes genetic changes

General source of municipal waste are residential, commercial and

0%
Manure
0%
Kitchen Waste
0%
Open area waste
0%
Farms

Radioactive contamination also known as:

0%
Radiological anatomy
0%
Radiological contamination
0%
Radiological imagining
0%
Radiological assistant

Finely divided solid, remaining either with in solution or in suspension is known as

0%
Settaleable Solids
0%
Dissolved Solids
0%
Suspended solids
0%
Colloidal Solids

What causes rapid melting of glaciers?

0%
Natural occurance of climatic variability
0%
Man-made global warming
0%
Volcanic eruption
0%
Solar variability

Quantity of solid waste produced, depends on living standard of

0%
Housing
0%
Consumption
0%
Populations
0%
All of above

'Carbon dioxide' molecules in air absorb

0%
Ultraviolet radiations
0%
Infrared Radiations
0%
Sunlight
0%
Heat

What is important to support marine animals in water bodies?

0%
Dissolved Oxygen
0%
Nitrogen
0%
$CO$
0%
$CO_{2}$

What kind of problem is a solid waste?

0%
Urban Problem
0%
Regional Problem
0%
Global problem
0%
Hosuehold Problem

What can humanitarian be harmed by unmitigated greenhouse emissions?

0%
Severe weather
0%
Infectious diseases
0%
Food crises
0%
All of above

How much BOD reduces in preliminary treatment?

0%
15 to 30%
0%
17 to 60%
0%
19 to 80%
0%
10 to 90%

What is 'adiabatic lapse' rate for wet air?

0%
0.6C per 100meter
0%
0.9C per 100meter
0%
0.7C per 100meter
0%
0.5C per 100meter

Explanation

$\textbf{Correct option:}$

$\textbf{(B)}$

$\textbf{Solution:}$

$\bullet$ Adiabatic lapse is a measurement of temperature changes with elevation.

$\bullet$ Wet adiabatic lapse denotes a higher water content, and heat exchange is not detected because the process is adiabatic.

$\bullet$ Lapse air can be dry or moist depending on the amount of water in it.

$\bullet$ Wet air has an adiabatic lapse rate of 0.98 degrees Celsius per 100 metres.

$\textbf{Thus the Correct option is (B)}$

What does happen to lighter components of solid waste in sea?

0%
It keeps on Floating
0%
It Submerges
0%
It Dissolves
0%
All of above

The large-scale deforestation that is happening all over world is causing :

0%
Loss of biodiversity
0%
Soil erosion
0%
Global warming
0%
All of these

Groundwater will not be depleted due to

0%
Afforestation
0%
Thermal power plants
0%
Loss of forest, and decreased rainfall
0%
Cropping of high water demanding crops

Which among the following planet / body shows anti-green house effect?

0%
Mars
0%
Venus
0%
Jupiter
0%
Titan

The steps required for conversion of kitchen garbage into manure are given below in a jumbled form.
(i) Put garbage in a pit
(ii) Cover the bottom of the pit with sand
(iii) Cover the pit loosely with a gunny bag or grass
(iv) Add worms
Which of the following shows the correct sequence of the above steps?

0%
(ii); (i); (iii); (iv)
0%
(i); (ii); (iii); (iv)
0%
(ii); (iv); (i); (iii)
0%
(iv); (i); (ii); (iii)
0%
(ii); (i); (iv); (iii)

Classification of solid waste includes:

0%
Rubbish
0%
Garbage
0%
Agricultural waste
0%
All of above

Solid waste are disposed in a coastal areas, having a deep sea water in

0%
Compositing
0%
Disposal into the Sea
0%
Pulverization
0%
Incinertion

Which is third fundamental function of solid waste management?

0%
Disposal
0%
Collection
0%
Processing
0%
Compositing

The function of tree plantation is celebrated through:

0%
Environment Day
0%
Social Forestry programme
0%
Vana Mahotsava
0%
Vani

Explanation

The function of tree plantation is celebrated through Vana mahotsava every year between 1

$^{st}$ and

$7^{th}$ of July. During this period saplings are planted by the participating people all over the nation. The purpose is to spread awareness on afforestation and conservation of forests.

So, the correct answer is 'Vana Mahotsava'

The common refrigerant chlorofluoro-methane (freon) and NO

$_2$ is a serious pollutant because

0%
It lowers atmospheric temperature.
0%
It prevents cloud condensation.
0%
It destroys haemoglobin.
0%
It disrupts O $_3$ layer.

CBSE Questions for Class 12 Medical Biology Environmental Issues Quiz 11 - MCQExams.com

0:0:1

Practice Class 12 Medical Biology Quiz Questions and Answers

CBSE Questions for Class 12 Medical Biology Environmental Issues Quiz 11 - MCQExams.com

0:0:1

Practice Class 12 Medical Biology Quiz Questions and Answers

Support mcqexams.com by disabling your adblocker.