Multiple Choice Question Answer V — task. Science CBSE, Class 9.

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1. Which of the following occupy maximum volume at STP:

$10^2{^2}$ molecules of $H_2$
$10^2{^2}$ atoms of He
0.2 gm-atom of oxygen
11 gm of $N_2O$

2. In the reaction

$4NH_3$ +

$5O_2$ →

$4NO$ +

$6H_2O$ , when one mole of ammonia and one mole of oxygen are made to react to completion, then

All the ammonia is consumed
All the oxygen is consumed
1.0 mole of $H_2O$ is produced
1.5 mole of NO is formed

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