JEE Main 2021 (Online) 31st August Evening Shift | Salt Analysis Question 38 | Chemistry

1

JEE Main 2021 (Online) 31st August Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List - I with List - II :

	List - I (Metal Ion)		List - II (Group of Qualitative analysis)
(a)	$$M{n^{2 + }}$$	(i)	Group - III
(b)	$$A{s^{3 + }}$$	(ii)	Group - IIA
(c)	$$C{u^{2 + }}$$	(iii)	Group - IV
(d)	$$A{l^{3 + }}$$	(iv)	Group - IIB

Choose the most appropriate answer from the options given below :

A

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

B

(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

C

(a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)

D

(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)

2

JEE Main 2021 (Online) 27th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

To an aqueous solution containing ions such as Al³⁺, Zn²⁺, Ca²⁺, Fe³⁺, Ni²⁺, Ba²⁺ and Cu²⁺ was added conc. HCl, followed by H₂S.

The total number of cations precipitated during this reaction is/are :

A

1

B

3

C

4

D

2

3

JEE Main 2021 (Online) 20th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

Cu²⁺ salt reacts with potassium iodide to give

A

Cu₂I₂

B

Cu₂I₃

C

Cul

D

Cu(I₃)₂

4

JEE Main 2021 (Online) 25th February Evening Shift

MCQ (Single Correct Answer)

+4

-1

Given below are two statements :

Statement I : The identification of Ni²⁺ is carried out by dimethyl glyoxime in the presence of NH₄OH.

Statement II : The dimethyl glyoxime is a bidentate neutral ligand.

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

A

Statement I is false but Statement II is true.

B

Statement I is true but Statement II is false.

C

Both Statement I and Statement II are false.

D

Both Statement I and Statement II are true.

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