Q111. Human activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower atmosphere because of 1. Its escape into the outer stratosphere. 2. The photosynthesis by phytoplankton in the oceans: 3. The trapping of air in the polar ice caps. Which of the statements given above is/are correct?

In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be potential sites for ca

Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth? 1. Volcanic action 2. Respiration 3. Photosynthesis 4. Decay of organic

Consider the following: 1. Photosynthesis 2. Respiration 3. Decay of organic matter 4. Volcanic action Which of the above add carbon dioxide to the carbon cycl

What would happen if phytoplankton of an ocean is completely destroyed for some reason? 1. The ocean as a carbon sink would be adversely affected. 2. The food c

Consider the following activities: 1. Spreading finely ground basalt rock on farmlands extensively 2. Increasing the alkalinity of oceans by adding lime 3. Capt

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 a

Which of the following statements are correct about the deposits of ‘methane hydrate’? 1. Global warming might trigger the release of methane gas from these dep

Why is there a concern about copper smelting plants? 1. They may release lethal quantities of carbon monoxide into the environment. 2. The copper slag can cause

Consider the following statements: The satellite Oceansat-2 launched by India helps in 1. estimating the water vapour content in the atmosphere. 2. predicting t

Consider the following statements: 1. The Earth’s magnetic field has reversed every few hundred thousand years. 2. When the Earth was created more than 4000 mil

The increasing amount of carbon dioxide in the air is slowly raising the temperature of the atmosphere, because it absorbs (a) The water vapour of the air retai

Due to their extensive rice cultivation, some regions may be contributing to global warming. To what possible reason/ reasons is this attributable? 1. The anaer

The scientific view is that the increase in global temperature should not exceed 2°C above the pre-industrial level. If the global temperature increases beyond

For the measurement/ estimation of which of the following are satellite images/remote sensing data used? 1. Chlorophyll content in the vegetation of a specific

What are the possible limitations of India in mitigating the global warming at present and in the immediate future? 1. Appropriate alternate technologies are no

Consider the following statements : 1. High clouds primarily reflect solar radiation and cool the surface of the Earth. 2. Low clouds have a high absorption of

Normally, the temperature decreases with the increase in height from the Earth’s surface, because : 1. The atmosphere can be heated upwards only from the Earth’

Due to their extensive rice cultivation, some regions may be contributing to global warming. To what possible reason/ reasons is this attributable? 1. The anaer

Consider the following: 1. Carbon monoxide 2. Methane 3. Ozone 4. Sulphur dioxide Which of the above are released into the atmosphere due to the burning of crop

Consider the following statements : Statement-I : The atmosphere is heated more by incoming solar radiation than by terrestrial radiation. Statement-II : Carbon

In the context of ecosystem productivity, marine upwelling zones are important as they increase marine productivity by bringing the: 1. Decomposer microorganism

Consider the following: 1. Carbon dioxide 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above is/are the emission/emissions from coal combustion at th

Consider the following statements: 1. Kyoto protocol came into force in the year 2005. 2. Kyoto protocol deals primarily with the depletion of the ozone layer.

Consider the following which can be found in the ambient atmosphere: 1. Soot 2. Sulphur hexafluoride 3. Water vapour Which of the above contribute to the warmi

Consider the following statements: 1. Agricultural soils release nitrogen oxides into the environment. 2. Cattle release ammonia into the environment. 3. Poultr

Consider the following statements : 1. Most of the world's coral reefs are in tropical waters. 2. More than one-third of the world's coral reefs are located in

Consider the following agricultural practices: 1. Contour bunding 2. Relay cropping 3. Zero tillage In the context of global climate change, which of the abov

With reference to the water on the planet Earth, consider the following statements: 1. The amount of water in the rivers and lakes is more than the amount of gr

There is a concern over the increase in harmful algal blooms in the seawaters of India. What could be the causative factors for this phenomenon? 1. Discharge of

With reference to the Earth’s atmosphere, which one of the following statements is correct?

Consider the following kinds of organisms: 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of the above are primary producers in the food chains

In the context of solving pollution problems, what is/are the advantage/advantages of bioremediation techniques? 1. It is a technique for cleaning up pollution

Which of the following statements best describes “carbon fertilization”?

There is some concern regarding the nanoparticles of some chemical elements that are used by the industry in the manufacture of various products. Why? 1. They c

Consider the following statements: Statement-I: Carbon markets are likely to be one of the most widespread tools in the fight against climate change.

Consider the following statements: 1. "The Climate Group" is an international non-profit organization that drives climate action by building large net

"Climate Action Tracker" which monitors the emission reduction pledges of different countries is a: (a) Database created by coalition of research orga

With reference to the ‘New York Declaration on Forests’, which of the following statements are correct? 1. It was first endorsed at the United Nations

In the context of which of the following do some scientists suggest the use of cirrus cloud thinning technique and the injection of sulphate aerosol i

In the context of proposals to the use of hydrogen-enriched CNG (H-CNG) as fuel for buses in public transport, consider the following statements: 1. T

Which of the following best describe/ describes the aim of the ‘Green India Mission’ of the Government of India? 1. Incorporating environmental benefi

The term ‘Intended Nationally Determined Contributions’ is sometimes seen in the news in the context of (a) pledges made by the European countries to