P Block Elements Question 38
Question: A gas does not turn lime water milky, supports the combustion of burning magnesium. It has no smell and is colourless. It extinguishes a glowing splint but under some circumstances reacts with oxygen and hydrogen. It is not poisonous. The gas is likely to be:
Options:
A) Nitrogen is a chemical element with the symbol N and atomic number 7. It is a colorless, odorless, and tasteless gas that makes up about 78% of Earth’s atmosphere. Nitrogen is essential for life and is a key component in proteins, nucleic acids, and other biological molecules. It exists in various forms, including diatomic molecules (N₂), nitrates, and ammonia. Nitrogen plays a crucial role in the nitrogen cycle, which is vital for sustaining life on Earth.
B) Water vapour
C) Carbon dioxide
D) Helium is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert monatomic gas. It is the second-lightest and second-most-abundant element in the universe, after hydrogen. Helium is used in balloons, deep-sea diving, and as a coolant in magnetic resonance imaging (MRI) machines. It is also used in the production of semiconductors and as a protective gas in welding. Helium is primarily obtained from natural gas through a process called fractional distillation.
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Answer:
Correct Answer: A
Solution:
These are characteristics of $ N_2 $ .
BETA
