1
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Find out the major product from the following reaction.
A
B
C
D
2
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
The isomeric deuterated bromide with molecular formula $$\mathrm{C_4H_8DBr}$$ having two chiral carbon atoms is
3
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Match List I with List II
| List I Isomeric pairs |
List II Type of isomers |
||
|---|---|---|---|
| A. | Propanamine and N-Methylethanamine | I. | Metamers |
| B. | Hexan-2-one and Hexan-3-one | II. | Positional isomers |
| C. | Ethanamide and Hydroxyethanimine | III. | Functional isomers |
| D. | o-nitrophenol and p-nitrophenol | IV. | Tautomers |
Choose the correct answer from the options given below :
4
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
A. Ammonium salts produce haze in atmosphere.
B. Ozone gets produced when atmospheric oxygen reacts with chlorine radicals.
C. Polychlorinated biphenyls act as cleansing solvents.
D. 'Blue baby' syndrome occurs due to the presence of excess of sulphate ions in water.
Choose the correct answer from the options given below :
Paper analysis
Total Questions
Chemistry
21
Mathematics
25
Physics
27
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