JEE-MAIN SERIES Chemistry
Internal Energy
2 previous year questions.
Volume: 2 Ques
Yield: Medium
High-Yield Trend
1
2023 1
2018 Chapter Questions 2 MCQs
01
PYQ 2018
medium
chemistry ID: jee-main
Two moles of an ideal monoatomic gas occupies a volume at . The gas expands adiabatically to a volume . Calculate the final temperature of the gas and change in its internal energy -
1
(a) 189 K (b) 2.7 kJ
2
(a) 195 K (b) - 2.7 kJ
3
(a) 189 K (b) -2.7 kJ
4
(a) 195 K (b) 2.7 kJ
02
PYQ 2023
medium
chemistry ID: jee-main
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:
Assertion (A): BeCl2 and MgCl2 produce characteristic flame.
Reason (R) : The excitation energy is high in BeCl2 and MgCl2
In the light of the above statements, choose the correct answer from the option given below
Assertion (A): BeCl2 and MgCl2 produce characteristic flame.
Reason (R) : The excitation energy is high in BeCl2 and MgCl2
In the light of the above statements, choose the correct answer from the option given below
1
Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
2
(A) is false but (R) is true
3
Both (A) and (R) are true and (R) is the correct explanation of (A)
4
(A) is true but (R) is false.