JEE Main 2022 (Online) 24th June Evening Shift | Salt Analysis Question 36 | Chemistry

1

JEE Main 2022 (Online) 24th June Evening Shift

MCQ (Single Correct Answer)

+4

-1

In the flame test of a mixture of salts, a green flame with blue centre was observed. Which one of the following cations may be present?

A

Cu²⁺

B

Sr²⁺

C

Ba²⁺

D

Ca²⁺

2

JEE Main 2022 (Online) 24th June Morning Shift

MCQ (Single Correct Answer)

+4

-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 :

A

Dimethylglyoxime and Ni²⁺

B

Dimethylglyoxime and Co²⁺

C

Nessler's reagent and Hg²⁺

D

Nessler's reagent and Ni²⁺

3

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)

4

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

JEE Main Subjects