JEE Main 2021 (Online) 25th July Morning Shift | Hydrogen Question 41 | Chemistry

At 298.2 K the relationship between enthalpy of bond dissociation (in kJ mol^$$-$$1) for hydrogen (E_H) and its isotope, deuterium (E_D), is best described by :

$${E_H} = {1 \over 2}{E_D}$$

$${E_H} = {E_D}$$

$${E_H} \simeq {E_D} - 7.5$$

$${E_H} = 2{E_D}$$

JEE Main 2021 (Online) 22th July Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

The water having more dissolved O₂ is :

boiling water

water at 80$$^\circ$$C

polluted water

water at 4$$^\circ$$C

JEE Main 2021 (Online) 20th July Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

The single largest industrial application of dihydrogen is :

Manufacture of metal hybrides

Rocket fuel in space research

In the synthesis of ammonia

In the synthesis of nitric acid

JEE Main 2021 (Online) 20th July Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

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

Assertion A : The dihedral angles in H₂O₂ in gaseous phase is 90.2$$^\circ$$ and in solid phase is 111.5$$^\circ$$.

Reason R : The change in dihedral angle in solid and gaseous phase is due to the difference in the intermolecular forces.

Choose the most appropriate answer from the options given below for A and R.

A is correct but R is not correct.

Both A and R are correct but R is not the correct explanation of A.

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

A is not correct but R is correct.

PREVIOUS NEXT

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

Number in Brackets after Paper Indicates No. of Questions