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Consider the following statements regarding Hydrogen.
  1. Hydrogen is the lightest and first element on the periodic table.
  2. Because of its highly combustible property, Hydrogen as a fuel can be used only in internal combustion engines and not in spacecraft propulsion.
  3. Molecular hydrogen is not available on Earth in convenient natural reservoirs.
Which of the above statements is/are correct?
  • a)
    1 and 2 only 
  • b)
    1 and 3 only 
  • c)
    2 and 3 only 
  • d)
    1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements regarding Hydrogen. Hydrogen is the ...
Hydrogen fuel:
Hydrogen is the lightest and first element on the periodic table. Since the weight of hydrogen is less than air, it rises in the atmosphere and is therefore rarely found in its pure form, H2.
At standard temperature and pressure, hydrogen is a nontoxic, nonmetallic, odorless, tasteless, colorless, and highly combustible diatomic gas.
Hydrogen fuel is a zero-emission fuel burned with oxygen. It can be used in fuel cells or internal combustion engines. It is also used as a fuel for spacecraft propulsion.
Occurrence of Hydrogen:
  • It is the most abundant element in the universe. The sun and other stars are composed largely of hydrogen.
  • Astronomers estimate that 90% of the atoms in the universe are hydrogen atoms. Hydrogen is a component of more compounds than any other element.
  • Water is the most abundant compound of hydrogen found on earth.
Molecular hydrogen is not available on Earth in convenient natural reservoirs. Most hydrogen on Earth is bonded to oxygen in water and to carbon in live or dead and/or fossilized biomass. It can be created by splitting water into hydrogen and oxygen.
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Consider the following statements regarding Hydrogen. Hydrogen is the lightest and first element on the periodic table. Because of its highly combustible property, Hydrogen as a fuel can be used only in internal combustion engines and not in spacecraft propulsion. Molecular hydrogen is not available on Earth in convenient natural reservoirs.Which of the above statements is/are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?
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Solutions for Consider the following statements regarding Hydrogen. Hydrogen is the lightest and first element on the periodic table. Because of its highly combustible property, Hydrogen as a fuel can be used only in internal combustion engines and not in spacecraft propulsion. Molecular hydrogen is not available on Earth in convenient natural reservoirs.Which of the above statements is/are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
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