Environmental Issues Test

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Environmental Issues Test - 5

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Weekly Quiz Competition

Question 1
4 / -1

Match column I with column II and select the correct option from the given codes.

A
A−(ii), B−(iv), C−(v), D−(i), E−(iii)

B
A−(iv), B−(v), C−(ii), D−(i), E−(iii)

C
A−(iv), B−(v), C−(iii), D−(ii), E−(i)

D
A−(ii), B−(v), C−(iv), D−(i), E−(iii)

Solution

Electronic waste or e-waste describes discarded electrical or electronic devices. The blue baby syndrome can also be caused by nitrates in drinking water leading to methemoglobinemia. Nitrates from polluted drinking water form compounds in the body that change haemoglobin to methemoglobin, decreasing the ability of blood to carry oxygen.
Minamata disease is a poisoning disease that affects mainly the central nervous system and is caused by the consumption of large quantities of fish and shellfish living in Minamata Bay and its surroundings, the major causative agent being some sort of organic mercury compound.
DDT is a class 2 insecticide, meaning it is moderately toxic. It is important to note that it was banned in the US in 1972, because of the health risks that emerge from its usage. DDT is very insoluble in water and very persistent in the environment, making it a highly polluting hazard.
A primary pollutant is an air pollutant emitted directly from a source. A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere. Peroxyacyl nitrates are powerful respiratory and eye irritants present in photochemical smog.
Question 2
4 / -1

Polyblend is

A
a mixture of two different types of plastics

B
a fine powder of recycled modified plastic

C
a blend of plastic and bitumen

D
none of these

Solution

Ahmed Khan, a plastic sack manufacturer of Bangalore in 1998, developed polyblend, a fine powder of recycled modified plastic in collaboration with R.V. College of Engineering and Bangalore City Corporation. He proved that the mixture of polyblend and bitumen was better for road carpeting as it has better water repellent was better for road carpeting as it had better water repellent property. It increased road life by a factor of three.
Question 3
4 / -1

Read the following statements and select the correct ones.
(i) Ahmed Khan, a plastic sack manufactturer of Bangalore, in 1998, developed polyblend, a fine powder of recycled modified plastic.
(ii) In collaboration with RV College of Engineering and Bangalore City Corporation, he proved that the mixture of polyblend and bitumen was better for road carpeting as it had better water repellent property.
(iii) By 2002, more than 40 km roads of Bangalore were laid with the help of Khan's mixture
(iv) Rag pickers who used to get 0.40 per kg of plastic waste started getting 6.00 from Ahmed Khan.
(v) INnovation like polyblend might help the modern society from being smothered with plastic waste.

A
(i), (ii) and (iii)

B
(ii), (iv) and (v)

C
(iii), (iv) and (v)

D
All of these
Solution
Plastic sack manufacturers in Bangalore has managed to find the ideal solution for increasing problem of accumulating plastic waste. Ahmed Khan, 57 years old, has been producing a plastic sack for 20 years. About 8 years ago, he realised that plastic waste was a real problem.
Polyblend, a powder of recycled modified plastic, was developed by his company. This mixture is mixed with the bitumen, that is used to lay roads.
In collaboration with RV College of engineering and the Bangalore city corporation, Ahmed Khan proved that mixture of polyblend and bitumen when used to lay roads enhance the bitumen's water repellent properties and help to increase road life by factors of 3.
Using Khan's technique by the year 2002, more than 40 km road in Bangalore has already been laid. At this rate Khan will soon be running short on plastic waste in Bangalore, to produce polyblend.
Question 4
4 / -1

Some statements are given below each with one or two blanks. Select the option that correctly fills up the blanks.
(i) High concentration of DDT disturbs ____ in birds, which causes ____.
(ii) ____ burns more efficiently as compared to petrol and diesel.
(iii) ___ is the natural ageing of a lake which occurs due to accumulation of ____.
(iv) ______ reduces the number of organisms which are sensitive to high temperature.
(v) Irreparable computers and other electronic goods are known as ____.

A
(i) calcium metabolism, thinning of egg shell (ii) CNG (iii) Eutrophication, nitrates and phosphates (iv) Thermal wastewater (v) electronic waste

B
(i) protein metabolism, thickening of egg shell (ii) CNG (iii) Eutrophication, nitrates and phosphates (iv) Thermal wastewater (v) electronic waste

C
(i) calcium metabolism, thinning of egg shell (ii) Coal (iii) Biomagnification, nitrates and phosphates (iv) Organic wastewater (v) inorganic waste

D
(i) calcium metabolism, thickening of egg shell (ii) CNG (iii) Biomagnification, DDT and mercury (iv) Thermal wastewater (v) electronic waste
Question 5
4 / -1

Read the given statements and select the correct option.
Statement 1: Open landfilling refers to the throwing waste on an uncovered area, which is periodically burnt or compressed.
Statement 2: In sanitary landfilling, the waste is compacted and covered by layer of dirt.

A
Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1

B
Both statements 1 and 2 are correct and statement 2 is not the correct explanation of statement 1

C
Statement 1 is correct and statement 2 in incorrect

D
Both statements 1 and 2 are incorrect

Solution

Open dumping or open landfilling is throwing of waste on uncovered low lying area. The waste is piled as high as the equipment can easily do. The waste is periodically burnt or compressed at intervals to reduce its bulk. In sanitary dumping or sanitary landfilling the waste is pulverised, compacted and covered over by a layer of dirt.
Question 6
4 / -1

Pollution from animal excreta and organic waste from kitchen can be most profitably minimized by

A
storing them in underground storage tanks

B
using them for producing biogas

C
vermiculture

D
using them directly as biofertilizers

Solution

Cowdung and other organic wastes of farm houses can now be profitably placed in gobar gas plants which not only provide enrich manure but also gas for domestic use.
Question 7
4 / -1

The effect of today's radioactive fallout will probably be more harmful to children of future generation than to present day children because

A
infants are more susceptible to radiations

B
susceptibility to radiations increase with age

C
mutated genes are usually recessive

D
all of these

Solution

The radioactive fallout can cause near-immediate effect by killing cells and damaging tissue. But radioactive fallout can also casuse long term effect by causing mutations in the DNA of living cells. These mutated genes are usually recessive and so they can appear anytime in our future generations. That is the reason why effect of radioactive fallout probably will be more harmful to children of futruegenerations than the present.
Question 8
4 / -1

Which of the following isotopes is most dangerous to human beings?

A
Phosphorus-32

B
Strontium-90

C
Caesium -137

D
Iodine-131

Solution

Strontium-90 is a radioactive isotope of strontium produced by nuclear fission. Strontium-90 is very harmful to human beings. It get deposits in our bones and bone marrow, causing bone cancer and leukaemia.
Question 9
4 / -1

Which of the following statements is correct?

A
There are working 'EcoSan' toilets in many areas of Kerala and Sri Lanka.

B
Municipal solid wastes are wastes from homes, offices, stores, schools, hospitals, etc., that are collected and disposed by the municipality.

C
In a sanitary landfill, wastes are dumped in a depression or trench after compaction and covered with dirt everyday.

D
All of these.

Solution

EcoSan toilet has emerged as a sustainable concept and is prevalent in Delhi, Kerala, and Mumbai for footpath and slum dwellers. These are solid wastes from home, offices, stores, schools, hospitals, hotels etc. These domestic solid wastes one usually, thrown in municipal garbage collecting cans. a depression or trench is made in the ground and wastes are dumped into it after compaction and covered with dirt every day. the above statements are correct.
Question 10
4 / -1

Select the correct statement out of the following.

A
Electrostatic precipitators (ESPs) can remove over 99 % particulate matter present in the exhaust from a thermal power plant.

B
Over half of the e-wastes generated in developed countries are exported to developing countries, mainluy to China, India and Pakistan, where metals like Cu, Fe, Si Ni, etc., are recovered during recycling process.

C
Use of nuclear energy has two very serious inherent problems first is accidental leakage and the second is safe disposal of radioactive wastes.

D
All of these.

Solution

An electrostatic precipitator(ESP_s) is a device that removes suspended dust particles from a gas or exhaust by applying a high-voltage electrostatic charge and collecting the particles on charged plates. It can remove 99% of particulate matter from thermal power plant exhaust.
e-waste is discarded electronic appliances such as mobile phones, computers, and televisions. Over half of the e-waste generated in developed countries are exported to developing countries, mainly to China, India, and Pakistan, where metals like Cu, Fe, Si, Ni, etc., are recovered during the recycling process.
Nuclear waste is the radioactive waste material, for example from the use or reprocessing of nuclear fuel. Hence Use of nuclear energy has two very serious inherent problems first is accidental leakage and the second is the safe disposal of radioactive wastes. Hence It has been recommended that storage of nuclear waste after sufficient pretreatment should be done in suitably shielded containers buried within rocks about 500m deep to prevent its harmful effects.

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Environmental Issues Test - 5

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Environmental Issues Test - 5

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SHARING IS CARING

Question 1

A−(ii), B−(iv), C−(v), D−(i), E−(iii)

A−(iv), B−(v), C−(ii), D−(i), E−(iii)

A−(iv), B−(v), C−(iii), D−(ii), E−(i)

A−(ii), B−(v), C−(iv), D−(i), E−(iii)

Solution

Question 2

a mixture of two different types of plastics

a fine powder of recycled modified plastic

a blend of plastic and bitumen

none of these

Solution

Question 3

(i), (ii) and (iii)

(ii), (iv) and (v)

(iii), (iv) and (v)

All of these

Solution

Question 4

(i) calcium metabolism, thinning of egg shell (ii) CNG (iii) Eutrophication, nitrates and phosphates (iv) Thermal wastewater (v) electronic waste

(i) protein metabolism, thickening of egg shell (ii) CNG (iii) Eutrophication, nitrates and phosphates (iv) Thermal wastewater (v) electronic waste

(i) calcium metabolism, thinning of egg shell (ii) Coal (iii) Biomagnification, nitrates and phosphates (iv) Organic wastewater (v) inorganic waste

(i) calcium metabolism, thickening of egg shell (ii) CNG (iii) Biomagnification, DDT and mercury (iv) Thermal wastewater (v) electronic waste

Question 5

Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1

Both statements 1 and 2 are correct and statement 2 is not the correct explanation of statement 1

Statement 1 is correct and statement 2 in incorrect

Both statements 1 and 2 are incorrect

Solution

Question 6

storing them in underground storage tanks

using them for producing biogas

vermiculture

using them directly as biofertilizers

Solution

Question 7

infants are more susceptible to radiations

susceptibility to radiations increase with age

mutated genes are usually recessive

all of these

Solution

Question 8

Phosphorus-32

Strontium-90

Caesium -137

Iodine-131

Solution

Question 9

There are working 'EcoSan' toilets in many areas of Kerala and Sri Lanka.

Municipal solid wastes are wastes from homes, offices, stores, schools, hospitals, etc., that are collected and disposed by the municipality.

In a sanitary landfill, wastes are dumped in a depression or trench after compaction and covered with dirt everyday.

All of these.

Solution

Question 10

Electrostatic precipitators (ESPs) can remove over 99 % particulate matter present in the exhaust from a thermal power plant.

Over half of the e-wastes generated in developed countries are exported to developing countries, mainluy to China, India and Pakistan, where metals like Cu, Fe, Si Ni, etc., are recovered during recycling process.

Use of nuclear energy has two very serious inherent problems first is accidental leakage and the second is safe disposal of radioactive wastes.

All of these.

Solution

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