JEE Main 2022 (Online) 26th June Morning Shift | Some Basic Concepts of Chemistry Question 47 | Chemistry

JEE Main 2022 (Online) 26th June Morning Shift

MCQ (Single Correct Answer)

-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)

10.2 M

12.5 M

14.0 M

18.2 M

JEE Main 2022 (Online) 24th June Evening Shift

MCQ (Single Correct Answer)

-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

25 and 75

40 and 60

60 and 40

75 and 25

JEE Main 2022 (Online) 24th June Morning Shift

MCQ (Single Correct Answer)

-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)

1188 g and 1296 g

2376 g and 2592 g

2592 g and 2376 g

3429 g and 3142 g

JEE Main 2021 (Online) 16th March Evening Shift

MCQ (Single Correct Answer)

-1

Fex₂ and Fey₃ are known when x and y are :

x = F, Cl, Br, I and y = F, Cl, Br, I

x = F, Cl, Br and y = F, Cl, Br, I

x = F, Cl, Br, I and y = F, Cl, Br

x = Cl, Br, I and y = F, Cl, Br, I

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