Polyblend is mixed with ...A... to lay roads in ...B... Complete the given statement by choosing appropriate option for A and B :-

1. A-bitumen; B-Bengaluru

2. A-carbon; B-DelhI

3. A-plastic; B-Kolkata 

4. A-cement; B-Chennai

What steps should be taken for the disposal of nuclear waste?

1. Nuclear waste should be pre-treated 

2. It should be stored in shielded containers

3. It should be buried about 500 m deep within the rock

4. All of the above

E-wastes are buried in ...A.. or ...B....

Complete the given statement by choosing the appropriate option for A and B:-

1. A-landfills; B-incinerated

2. A-open area; B-recycle

3. A-dumping zone; B-recycle 

4. A-open area; B-incinerated

Match the items in column I and column II and choose the correct option :-

The correct match is :-

1. A-ii, B-i, C-iv, D-iii

2. A-iii, B-ii, C-iv, D-i

3. A-iii, B-iv, C-i, D-ii

4. A-iii, B-i, C-iv, D-i

How much percent forest cover was recommended for hills by National forest policy (1988) ?

1. 33

2. 67

3. 40

4. 30

Amrita Devi Bishnoi Award is given to individuals or communities from rural areas that have shown extraordinary courage and dedication in

1.  Protecting wildlife

2.  Minimizing the ODS

3.  Organic farming

4.  Biotechnology 

Eco-san toilets are not associated with which of the following?

1.  Are working in Sri Lanka and Kerala

2.  Composting method for recycling of human excreta

3.  Recycled material forms natural fertilizer

4.  Enhance the need for chemical fertilizers 

Cleaning of wastewater in Arcata Marsh involves

1.  Only conventional method of sewage treatment

2.  Removal of dissolved heavy metals through a biological process

3.  Filteration, chlorination like chemical processes

4.  Utilisation of microorganisms only for pollution control 

Biomagnification will be maximum among which of the given trophic level in an aquatic ecosystem?

1. T₁

2. T₂

3. T₃

4. T₄

Greenhouse gases

1. Absorbs all sunlight and warm the atmosphere

2. Include gases such as CO₂ and O₂

3. Are responsible for ozone layer formation

4. Are mainly CO₂ and CH₄