1

JEE Main 2022 (Online) 26th June Morning Shift

MCQ (Single Correct Answer)

+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)

2

JEE Main 2022 (Online) 24th June Evening Shift

MCQ (Single Correct Answer)

+4

-1

120 g of an organic compound that contains only carbon and hydrogen gives 330 g of CO_{2} and 270 g of water on complete combustion. The percentage of carbon and hydrogen, respectively are

3

JEE Main 2022 (Online) 24th June Morning Shift

MCQ (Single Correct Answer)

+4

-1

If a rocket runs on a fuel (C_{15}H_{30}) and liquid oxygen, the weight of oxygen required and CO_{2} released for every litre of fuel respectively are :

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

4

JEE Main 2021 (Online) 16th March Evening Shift

MCQ (Single Correct Answer)

+4

-1

The exact volumes of 1 M NaOH solution required to neutralise 50 mL of 1 M H

_{3}PO_{3}solution and 100 mL of 2 M H_{3}PO_{2}solution, respectively, are :Questions Asked from Some Basic Concepts of Chemistry (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

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