SSC JE Mechanical Engineering 27 Oct 2020 Shift 1 Papers

Question : 141 of 200

Marks: +1, -0

The chemical formula of R717 is:

$N_2$
$NH_3$
$H_2O$
$CO_2$

Solution:

Now according to the question, we have to find the chemical formula of R717
∴ 717 = 700 + 17;
Now we have to only find that from the options provided which compound is having a molecular weight of 17.

N_2 = 28; NH_3 = 17; H_2O = 18 ;

CO_2 = 44

Hence from above values we can conclude that the correct answer is

NH_3

i.e. option (b)

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