Q187. 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 matter Select the correct answer using the code given below:

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

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 at

Which of the following adds nitrogen to the soil? (2013) 1. Excretion of urea by animals 2. Burning of coal by man 3. Death of vegetation Select the correct ans

Which of the following are some important pollutants released by the steel industry in India? 1. Oxides of sulphur 2. Oxide of nitrogen 3. Carbon monoxide 4. Ca

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: 1. Carbon monoxide 2. Nitrogen oxide 3. Ozone 4. Sulphur dioxide Excess of which of the above in the environment is/are the cause(s) o

Consider the following: 1. Rice fields 2. Coal mining 3. Domestic animals 4. Wet lands Which of the above are sources of methane, a major greenhouse gas?

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

Consider the following : 1. Pyroclastic debris 2. Ash and dust 3. Nitrogen compounds 4. Sulphur compounds How many of the above are products of volcanic eruptio

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

With reference to the food chains in ecosystems, which of the following kinds of organism is/are known as decomposer organism/organisms? 1. Virus 2. Fungi 3. Ba

In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of the Air Quality Index? 1. Carbon d

With the present state of development, Artificial Intelligence can effectively do which of the following? 1. Bring down electricity consumption in ind

With reference to Visible Light Communication (VLC) technology, which of the following statements are correct? 1. VLC uses electromagnetic spectrum wa

In India, under cyber insurance for individuals, which of the following benefits are generally covered, in addition to payment for the loss of funds a

With reference to “Blockchain Technology” consider the following statements: 1. It is a public ledger that everyone can inspect but which no single us

Which of the following statements are correct regarding the general difference between plant and animal cells? 1. Plant cells have cellulose cell wall

In the context of recent advances in human reproductive technology. “Pronuclear Transfer” is used for

With reference to solar water pumps, consider the following statements: 1. Solar power can be used for running surface pumps and not for submersible p

With reference to the current trends in the cultivation of sugarcane in India, consider the following statements: 1. A substantial saving in seed mate