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JEE Advanced Previous Year Questions 
(2021-2023): Hydrocarbons 
2022 
Numerical Type 
JEE Advanced 2022 Paper 2 Online 
Q1. The number of isomeric tetraenes (NOT containing ???? -hybridized carbon atoms) that can be 
formed from the following reaction sequence is 
 
Ans: 2 
 
JEE Advanced 2022 Paper 2 Online 
Q2. The number of - ????
?? - (methylene) groups in the product formed from the following 
reaction sequence is 
 
Page 2


JEE Advanced Previous Year Questions 
(2021-2023): Hydrocarbons 
2022 
Numerical Type 
JEE Advanced 2022 Paper 2 Online 
Q1. The number of isomeric tetraenes (NOT containing ???? -hybridized carbon atoms) that can be 
formed from the following reaction sequence is 
 
Ans: 2 
 
JEE Advanced 2022 Paper 2 Online 
Q2. The number of - ????
?? - (methylene) groups in the product formed from the following 
reaction sequence is 
 
Ans: 0 
 
JEE Advanced 2022 Paper 2 Online 
Q3. The total number of chiral molecules formed from one molecule of ?? on complete ozonolysis 
( O
3
, Zn / H
2
O ) is 
 
Ans: 2 
Page 3


JEE Advanced Previous Year Questions 
(2021-2023): Hydrocarbons 
2022 
Numerical Type 
JEE Advanced 2022 Paper 2 Online 
Q1. The number of isomeric tetraenes (NOT containing ???? -hybridized carbon atoms) that can be 
formed from the following reaction sequence is 
 
Ans: 2 
 
JEE Advanced 2022 Paper 2 Online 
Q2. The number of - ????
?? - (methylene) groups in the product formed from the following 
reaction sequence is 
 
Ans: 0 
 
JEE Advanced 2022 Paper 2 Online 
Q3. The total number of chiral molecules formed from one molecule of ?? on complete ozonolysis 
( O
3
, Zn / H
2
O ) is 
 
Ans: 2 
 
JEE Advanced 2022 Paper 1 Online 
Q4. If the reaction sequence given below is carried out with 15 moles of acetylene, the amount 
of the product ?? formed (in ?? ) is 
 
 
The yields of ?? , ?? , ?? and ?? are given in parentheses. 
[Given: Atomic mass of ?? = ?? , ?? = ???? , ?? = ???? , ???? = ???? ] 
Ans: 135.80 to 136.20 
 
Page 4


JEE Advanced Previous Year Questions 
(2021-2023): Hydrocarbons 
2022 
Numerical Type 
JEE Advanced 2022 Paper 2 Online 
Q1. The number of isomeric tetraenes (NOT containing ???? -hybridized carbon atoms) that can be 
formed from the following reaction sequence is 
 
Ans: 2 
 
JEE Advanced 2022 Paper 2 Online 
Q2. The number of - ????
?? - (methylene) groups in the product formed from the following 
reaction sequence is 
 
Ans: 0 
 
JEE Advanced 2022 Paper 2 Online 
Q3. The total number of chiral molecules formed from one molecule of ?? on complete ozonolysis 
( O
3
, Zn / H
2
O ) is 
 
Ans: 2 
 
JEE Advanced 2022 Paper 1 Online 
Q4. If the reaction sequence given below is carried out with 15 moles of acetylene, the amount 
of the product ?? formed (in ?? ) is 
 
 
The yields of ?? , ?? , ?? and ?? are given in parentheses. 
[Given: Atomic mass of ?? = ?? , ?? = ???? , ?? = ???? , ???? = ???? ] 
Ans: 135.80 to 136.20 
 
 
 
Molecular formula of D is C
8
H
8
O
2
 
Molar mass of ?? is (12 × 8 + 8 × 1 + 16 × 2 ) = 136 g 
? Mass of ?? is 136 
Page 5


JEE Advanced Previous Year Questions 
(2021-2023): Hydrocarbons 
2022 
Numerical Type 
JEE Advanced 2022 Paper 2 Online 
Q1. The number of isomeric tetraenes (NOT containing ???? -hybridized carbon atoms) that can be 
formed from the following reaction sequence is 
 
Ans: 2 
 
JEE Advanced 2022 Paper 2 Online 
Q2. The number of - ????
?? - (methylene) groups in the product formed from the following 
reaction sequence is 
 
Ans: 0 
 
JEE Advanced 2022 Paper 2 Online 
Q3. The total number of chiral molecules formed from one molecule of ?? on complete ozonolysis 
( O
3
, Zn / H
2
O ) is 
 
Ans: 2 
 
JEE Advanced 2022 Paper 1 Online 
Q4. If the reaction sequence given below is carried out with 15 moles of acetylene, the amount 
of the product ?? formed (in ?? ) is 
 
 
The yields of ?? , ?? , ?? and ?? are given in parentheses. 
[Given: Atomic mass of ?? = ?? , ?? = ???? , ?? = ???? , ???? = ???? ] 
Ans: 135.80 to 136.20 
 
 
 
Molecular formula of D is C
8
H
8
O
2
 
Molar mass of ?? is (12 × 8 + 8 × 1 + 16 × 2 ) = 136 g 
? Mass of ?? is 136 
2021 
Single Correct Type 
JEE Advanced 2021 Paper 1 Online 
Q1: Among the following, the conformation that corresponds to the most stable conformation 
of meso-butane-2,3-diol is 
A.  
 
B. 
 
C. 
 
D. 
 
Ans: (B) 
Due to the intramolecular H-bonding, the gauche conformation of butane-2,3-diol is most stable one. 
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