1
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Match List I with List II
List I | List II | ||
---|---|---|---|
Test | Functional group / Class of Compound | ||
A. | Molisch's Test | I. | Peptide |
B. | Biuret Test | II. | Carbohydrate |
C. | Carbylamine Test | III. | Primary amine |
D. | Schiff's Test | IV. | Aldehyde |
Choose the correct answer from the options given below :
2
JEE Main 2023 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
In Dumas method for the estimation of $\mathrm{N}_{2}$, the sample is heated with copper oxide and the gas evolved is passed over :
3
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Match items of column I and II
Column I (Mixture of compounds) | Column II (Separation Technique) | ||
---|---|---|---|
A. | $$\mathrm{H_2O/CH_2Cl_2}$$ | i. | Crystalization |
B. | ![]() |
ii. | Differential solvent extraction |
C. | Kerosene / Naphthalene | iii. | Column chromatography |
D. | $$\mathrm{C_6H_{12}O_6/NaCl}$$ | iv. | Fractional Distillation |
Correct match is
4
JEE Main 2023 (Online) 30th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Match List I with List II:
List I (Mixture) | List II (Separation Technique) | ||
---|---|---|---|
A. | $\mathrm{CHCl}_3+\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2$ | I. | Steam distillation |
B. | $\mathrm{C}_6 \mathrm{H}_{14}+\mathrm{C}_5 \mathrm{H}_{12}$ | II. | Differential extraction |
C. | $\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2+\mathrm{H}_2 \mathrm{O}$ | III. | Distillation |
D. | $\text { Organic compound in } \mathrm{H}_2 \mathrm{O}$ | IV. | Fractional distillation |
Questions Asked from Practical Organic Chemistry (MCQ (Single Correct Answer))
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