JEE Main 202124 FebruaryEvening Shift
- Exam
- JEE Main
- Year
- 2021
- Date
- 24 February
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- Hydrogen
JEE Main 2021 · 24 February · Evening Shift · Chemistry · Hydrogen
Given below are two statements: one is labelled as Assertion A and...
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:
Options
- ABoth A and R are true but R is NOT the correct explanation of A
- BBoth A and R are true and R is the correct explanation of A
- CA is true but R is false
- DA is false but R true
Correct answer
B. Both A and R are true and R is the correct explanation of A
Step-by-step solution
Most abundant gas in the atmosphere is hydrogen. It is the primary gas present in the stars. Hydrogen fuses to Helium and it fuels the stars.