JEE Main 2023 (Online) 1st February Evening Shift

MCQ (Single Correct Answer)

-1

Given below are two statements :

Statement I : Sulphanilic acid gives esterification test for carboxyl group.

Statement II : Sulphanilic acid gives red colour in Lassigne's test for extra element detection.

In the light of the above statements, choose the most appropriate answer from the options given below :

Both Statement I and Statement II are correct

Statement I is correct but Statement II is incorrect

Both Statement I and Statement II are incorrect

Statement I is incorrect but Statement II is correct

JEE Main 2023 (Online) 1st February Evening Shift

MCQ (Single Correct Answer)

-1

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)

Assertion (A) : An aqueous solution of $$\mathrm{KOH}$$ when used for volumetric analysis, its concentration should be checked before the use.

Reason (R) : On aging, $$\mathrm{KOH}$$ solution absorbs atmospheric $$\mathrm{CO}_{2}$$.

In the light of the above statements, choose the correct answer from the options given below :

(A) is correct but (R) is not correct

(A) is not correct but (R) is correct

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

Both (A) and (R) are correct and (R) is the correct explanation of (A)

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

$\mathrm{Pd}$

$\mathrm{Ni}$

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