JEE Main 2022 (Online) 25th July Morning Shift | Practical Organic Chemistry Question 14 | Chemistry

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

Sublimation

JEE Main 2022 (Online) 24th June Morning Shift

MCQ (Single Correct Answer)

-1

During the qualitative analysis of salt with cation y²⁺, addition of a reagent (X) to alkaline solution of the salt gives a bright red precipitate. The reagent (X) and the cation (y²⁺) present respectively are :

Dimethylglyoxime and Ni²⁺

Dimethylglyoxime and Co²⁺

Nessler's reagent and Hg²⁺

Nessler's reagent and Ni²⁺

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