P-Block Elements Ques 404
Question: Which is the lightest gas
Options:
A) Hydrogen
B) Oxygen
C) Helium
D) Nitrogen
Show Answer
Answer:
Correct Answer: A
Solution:
| Gas - | $ H_2 $ | $ O_2 $ | $ He $ | $ N_2 $ |
|---|---|---|---|---|
| Mol. mass - | 2 | 32 | 4 | 28 |
A) Hydrogen
B) Oxygen
C) Helium
D) Nitrogen
Correct Answer: A
| Gas - | $ H_2 $ | $ O_2 $ | $ He $ | $ N_2 $ |
|---|---|---|---|---|
| Mol. mass - | 2 | 32 | 4 | 28 |
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