91

The acidification of oceans is increasing. Why is this phenomenon a cause of concern?

1. The growth and survival of calcareous. phytoplankton will be adversely affected.

2. The growth and survival of coral reefs will be adversely affected.

3. The survival of some animals that have phytoplanktonic larvae will be adversely affected.

4. The cloud seeding and formation of clouds will be adversely affected.

Which of the statements given above is/are correct?

A

1, 2 and 3 only

B

2 only

C

1 and 3 only

D

1, 2, 3 and 4

E

Answer

A

Instruction

92

Consider the following statements about 'Green-Bridge' technology used to clean the polluted lakes:

1. It uses filtration and purification power of fibrous materials like coconut coir or dried water hyacinth, to form the bridge.

2. Energy sources are sun and air.

3. It is an expensive technique.

4. It has recently been used to salvage the famed Udaisagar Lake in Udaipur.

Which of the above given statements are correct?

A

1 and 2 only

B

1, 2 and 3 only

C

1, 2 and 4 only

D

All of the above

E

Answer

C

Instruction

93

Consider the following sources of energy:

1. Sun 2. Sea waves or tides 3. Wind 4. Coal

Which of the above given energy resources is/ are renewable and green source of energy?

A

1 only

B

2 only

C

1, 2 and 3 only

D

1, 2, 3 and 4

E

Answer

C

Instruction

94

Consider the following statements about Siberian Crane:

1. It is a migratory bird.

2. It visits Keoladeo National Park, in Rajasthan, in winters.

3. It is a white-eyed bird with a scarlet face.

4. It is facing local extinction.

Which of the above given statements are correct?

A

1 only

B

1 and 2 only

C

1, 2 and 3 only

D

All of the above

E

Answer

D

Instruction

95

Which of the following birds is/are facing extinction?

1. Red-wattled Lapwing 2. Indian Vulture

3. Little Cormorant 4. Pale-crested Cuckoo

Select the correct answer using the codes given below.

A

1 only

B

2 only

C

2 and 3 only

D

1, 3 and 4 only

E

Answer

B

Instruction

96

Consider the following statements about the Corbett National Park.

1. It is India's oldest National Park.

2. It is located in Rajasthan.

3. It is the biggest haven for tigers.

4. It is also famous for wild elephants, birds, butterflies and gharials.

Which of the above given statements is/are correct?

A

1 and 2 only

B

1, 2 and 3 only

C

1, 3 and 4 only

D

1, 2, 3 and 4

E

Answer

C

Instruction

97

Which of the following techniques is/are deployed for tiger census in India?

1. E-Eye (Electronic-Eye)

2. Scat (faecal matter) analysis

3. Pug-marks

4. Radio collar/GPS collar

Select the correct answer using the codes given below.

A

1 and 2 only

B

2 and 3 only

C

1 and 4 only

D

1, 2, 3 and 4

E

Answer

D

Instruction

98

Consider the following statements about the Iconic Great Barrier Reef.

1. It is located in Queensland State of Australia.

2. It is world's largest reserve of corals.

3. UNESCO has listed it as an endangered site.

4. It is under threat from industrial development.

Which of the above given statements is/are correct?

A

1 only

B

1 and 2 only

C

1 and 3 only

D

1, 2, 3 and 4

E

Answer

D

Instruction

99

The Indian eastern coastal state of Odisha was recently in news for

1. Launching of Agni-V 2. Traumatic tsunami

3. Olive ridley turtles 4. Infant mortality due to malnutrition

Select the correct answer using the codes given below.

A

1, 2 and 3 only

B

1 and 3 only

C

1, 3 and 4 only

D

2, 3 and 4 only

E

Answer

B

Instruction

100

Consider the following characteristic features of Protected Area (PA).

1. It is a clearly defined geographical space dedicated and managed to achieve long- term conservation of nature.

2. It includes government reserved forests.

3. It comprises wildlife sanctuaries and National Parks.

4. In these areas human occupation and exploitation of resources is limited.

Which of the above given statements is/are correct?

A

1 and 2 only

B

1 and 3 only

C

1, 3 and 4 only

D

All of the above

E

Answer

C

Instruction