Which one of the following elements is essential for the construction of nuclear reactors?
- (a)Cobalt
- (b)Nickel
- (c)Zirconium
- (d)Tungsten
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Official answer(c) Zirconium
Other questions on Energy & Environment
Which of the following statements with regard to Green Hydrogen is/are correct ? 1. It is decarbonized hydrogen obtained from natural gas reforming combined with carbon capture and storage (CCS). 2. It is produced using electrolysis of water with electricity generated by renewable energy. 3. National Green Hydrogen Mission of India aims for abatement of nearly 50 MMT of annual greenhouse gas emissions by 2030. Select the answer using the code given below :
- (a)1 only
- (b)2 and 3 only
- (c)2 only
- (d)1, 2 and 3
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Official answer(b) 2 and 3 only
Consider the following types of vehicles : I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell-electric hybrid vehicles How many of the above are considered as alternative powertrain vehicles?
- (a)Only one
- (b)Only two
- (c)All the three
- (d)None
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Official answer(c) All the three
Consider the following substances : I. Ethanol II. Nitroglycerine III. Urea Coal gasification technology can be used in the production of how many of them?
- (a)Only one
- (b)Only two
- (c)All the three
- (d)None
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Official answer(b) Only two
Consider the following : 1. Battery storage 2. Biomass generators 3. Fuel cells 4. Rooftop solar photovoltaic units How many of the above are considered "Distributed Energy Resources" ?
- (a)Only one
- (b)Only two
- (c)Only three
- (d)All four
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Official answer(d) All four
With reference to radioisotope thermoelectric generators (RTGs), consider the following statements : 1. RTGs are miniature fission reactors. 2. RTGs are used for powering the onboard systems of spacecrafts. 3. RTGs can use Plutonium-238, which is a by-product of weapons development. Which of the statements given above are correct ?
- (a)1 and 2 only
- (b)2 and 3 only
- (c)1 and 3 only
- (d)1, 2 and 3
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Official answer(b) 2 and 3 only
Consider the following materials : 1. Agricultural residues 2. Corn grain 3. Wastewater treatment sludge 4. Wood mill waste Which of the above can be used as feedstock for producing Sustainable Aviation Fuel ?
- (a)1 and 2 only
- (b)3 and 4 only
- (c)1, 2, 3 and 4
- (d)1, 3 and 4 only
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Official answer(c) 1, 2, 3 and 4