JEE Main 2022 (Online) 25th July Evening Shift | Practical Organic Chemistry Question 12 | Chemistry

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JEE Main 2022 (Online) 25th July Evening Shift

MCQ (Single Correct Answer)

-1

In base vs. acid titration, at the end point methyl orange is present as

quinonoid form

heterocyclic form

phenolic form

benzenoid form

JEE Main 2022 (Online) 25th July Morning Shift

MCQ (Single Correct Answer)

-1

Match List I with List II

	List I		List II
(A)	N$$_2$$(g) + 3H$$_2$$(g) $$ \to $$ 2NH$$_3$$(g)	(I)	Cu
(B)	CO(g) + 3H$$_3$$(g) $$ \to $$ CH$$_4$$(g) + H$$_2$$O(g)	(II)	Cu/ZnO $$ - $$ Cr$$_2$$O$$_3$$
(C)	CO(g) + H$$_2$$(g) $$ \to $$ HCHO(g)	(III)	Fe$$_x$$O$$_y$$ + K$$_2$$O + Al$$_2$$O$$_3$$
(D)	CO(g) + 2H$$_2$$(g) $$ \to $$ CH$$_3$$OH(g)	(IV)	Ni

Choose the correct answer from the options given below :

$$(\mathrm{A})-(\mathrm{II}),(\mathrm{B})-(\mathrm{IV}),(\mathrm{C})-(\mathrm{I}),(\mathrm{D})-(\mathrm{III})$$

$$(\mathrm{A})-(\mathrm{II}),(\mathrm{B})-(\mathrm{I}),(\mathrm{C})-(\mathrm{IV}),(\mathrm{D})-(\mathrm{III})$$

$$(\mathrm{~A})-(\mathrm{III}),(\mathrm{B})-(\mathrm{IV}),(\mathrm{C})-(\mathrm{I}),(\mathrm{D})-(\mathrm{II})$$

$$(\mathrm{A})-(\mathrm{III}),(\mathrm{B})-(\mathrm{I}),(\mathrm{C})-(\mathrm{IV}),(\mathrm{D})-(\mathrm{II})$$

JEE Main 2022 (Online) 26th June Morning Shift

MCQ (Single Correct Answer)

-1

Given below are two statements :

Statement I : In 'Lassaigne's Test', when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed.

Statement II : If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give NaCN and Na₂S.

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.

Both Statement I and Statement II are incorrect.

Statement I is correct but Statement II is incorrect.

Statement I is incorrect but Statement II is correct.

JEE Main 2022 (Online) 25th June Morning Shift

MCQ (Single Correct Answer)

-1

Phenol on reaction with dilute nitric acid, gives two products. Which method will be most efficient for large scale separation?

Chromatographic separation

Fractional Crystallisation

Steam distillation