1
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
2
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Given below are two statements :
Statement I : In froth floatation method of rotating paddle agitates the mixture to drive air out of it.
Statement II : Iron pyrites and generally avoided for extraction of iron due to environmental reasons.
In the light of the above statements, choose the correct answer from the options given below :
3
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Match List I with List II
| List I | List II | ||
|---|---|---|---|
| A. | Cobalt catalyst | I. | $$\mathrm{(H_2+Cl_2)}$$ production |
| B. | Syngas | II. | Water gas production |
| C. | Nickel catalyst | III. | Coal gasification |
| D. | Brine solution | IV. | Methanol production |
Choose the correct answer from the options given below :
4
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 :
Paper analysis
Total Questions
Chemistry
30
Mathematics
30
Physics
30
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