EASY
JEE Main
IMPORTANT
Earn 100

The most abundant elements by mass in the body of a healthy human adult are:

Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75kg person would gain if all  1H atoms are replaced by  2H atoms is:

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Important Questions on Hydrogen

EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 14 - Hydrogen>JEE Main - 27 July 2021 Shift 2>Q 29
The number of neutrons and electrons, respectively, present in the radioactive isotope of hydrogen is :-
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 14 - Hydrogen>JEE Main - 27 August 2021 Shift 2>Q 30
The oxide that gives H2O2 most readily on treatment with H2O is :
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 14 - Hydrogen>JEE Main - 27 August 2021 Shift 1>Q 31
Deuterium resembles hydrogen in properties but:
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 14 - Hydrogen>JEE Main - 26 Feb 2021 Shift 2>Q 32
Calgon is used for water treatment. Which of the following statement is NOT true about Calgon?
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 14 - Hydrogen>JEE Main - 26 Feb 2021 Shift 2>Q 33
Which of the following forms of hydrogen emits low energy β- particles?
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 14 - Hydrogen>JEE Main - 26 Feb 2021 Shift 1>Q 34

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:

EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 14 - Hydrogen>JEE Main - 26 August 2021 Shift 2>Q 35
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Heavy water is used for the study of reaction mechanism.
Reason (R): The rate of reaction for the cleavage of O-H bond is slower than that of O-D bond.
Choose the most appropriate answer from the options given below :
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 14 - Hydrogen>JEE Main - 26 August 2021 Shift 1>Q 36
Which one of the following methods is most suitable for preparing deionized water?