1
JEE Main 2022 (Online) 28th June Evening Shift
+4
-1

Compound A contains 8.7% Hydrogen, 74% Carbon and 17.3% Nitrogen. The molecular formula of the compound is,

Given : Atomic masses of C, H and N are 12, 1 and 14 amu respectively.

The molar mass of the compound A is 162 g mol$$-$$1.

A
C4H6N2
B
C2H3N
C
C5H7N
D
C10H14N2
2
JEE Main 2022 (Online) 26th June Morning Shift
+4
-1

A commercially sold conc. HCl is 35% HCl by mass. If the density of this commercial acid is 1.46 g/mL, the molarity of this solution is:

(Atomic mass : Cl = 35.5 amu, H = 1 amu)

A
10.2 M
B
12.5 M
C
14.0 M
D
18.2 M
3
JEE Main 2022 (Online) 24th June Evening Shift
+4
-1

120 g of an organic compound that contains only carbon and hydrogen gives 330 g of CO2 and 270 g of water on complete combustion. The percentage of carbon and hydrogen, respectively are

A
25 and 75
B
40 and 60
C
60 and 40
D
75 and 25
4
JEE Main 2022 (Online) 24th June Morning Shift
+4
-1

If a rocket runs on a fuel (C15H30) and liquid oxygen, the weight of oxygen required and CO2 released for every litre of fuel respectively are :

(Given : density of the fuel is 0.756 g/mL)

A
1188 g and 1296 g
B
2376 g and 2592 g
C
2592 g and 2376 g
D
3429 g and 3142 g
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