JEE Main 2023 (Online) 1st February Morning Shift | Practical Organic Chemistry Question 8 | Chemistry

JEE Main 2023 (Online) 1st February Morning Shift

MCQ (Single Correct Answer)

-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 :

(A) - III, (B) - IV, (C) - II, (D) - I

(A) - II, (B) - I, (C) - III, (D) - IV

(A) - III, (B) - IV, (C) - I, (D) - II

(A) - I, (B) - II, (C) - III, (D) - IV

JEE Main 2023 (Online) 31st January Evening Shift

MCQ (Single Correct Answer)

-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 :

Copper oxide

Copper gauze

$\mathrm{Pd}$

$\mathrm{Ni}$

JEE Main 2023 (Online) 31st January Morning Shift

MCQ (Single Correct Answer)

-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

A-(ii), B-(iv), C-(i), D-(iii)

A-(iii), B-(iv), C-(ii), D-(i)

A-(i), B-(iii), C-(ii), D-(iv)

A-(ii), B-(iii), C-(iv), D-(i)

JEE Main 2023 (Online) 30th January Evening Shift

MCQ (Single Correct Answer)

-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