JEE Main 2021 (Online) 26th February Morning Shift | Hydrogen Question 50 | Chemistry

Statements about heavy water are given below :

A. Heavy water is used in exchange reactions for the study of reaction mechanisms.

B. Heavy water is prepared by exhaustive electrolysis of water.

(C) Heavy water has higher boiling point than ordinary water.

(D) Viscosity of H₂O is greater than D₂O.

Choose the most appropriate answer from the options given below :

A, B, and C only

A and C only

A and D only

A and B only

JEE Main 2021 (Online) 25th February Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Water does not produce CO on reacting with :

CH₄

C₃H₈

CO₂

JEE Main 2021 (Online) 25th February Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Which of the following equation depicts the oxidizing nature of H₂O₂?

$$C{l_2} + {H_2}{O_2} \to 2HCl + {O_2}$$

$$KI{O_4} + {H_2}{O_2} \to KI{O_3} + {H_2}O + {O_2}$$

$$2{I^ - } + {H_2}{O_2} + 2{H^ + } \to {I_2} + 2{H_2}O$$

$${I_2} + {H_2}{O_2} + 2O{H^ - } \to 2{I^ - } + 2{H_2}O + {O_2}$$

JEE Main 2021 (Online) 24th February Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Hydrogen is the most abundant element in the Universe, but it is not the most abundant gas in the troposphere.

Reason R : Hydrogen is the lightest element.

In the light of the above statements, choose the correct answer from the options given below :

Both A and R are true but R is NOT the correct explanation of A

Both A and R are true and R is the correct explanation of A

A is true but R is false

A is false but R is true.

PREVIOUS NEXT

Questions Asked from Hydrogen (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions