JEE Main 2022 (Online) 29th July Morning Shift | d and f Block Elements Question 87 | Chemistry | JEE Main - ExamSIDE.com

Joint Entrance Examination

Medical

Graduate Aptitude Test in Engineering

Civil Services

Defence

Staff Selection Commission

CBSE

1

JEE Main 2022 (Online) 29th July Morning Shift

MCQ (Single Correct Answer)

+4

-1

In following pairs, the one in which both transition metal ions are colourless is :

A

$$\mathrm{Sc}^{3+}, \mathrm{Zn}^{2+}$$

B

$$\mathrm{Ti}^{4+}, \mathrm{Cu}^{2+}$$

C

$$\mathrm{V}^{2+}, \mathrm{Ti}^{3+}$$

D

$$\mathrm{Zn}^{2+}, \mathrm{Mn}^{2+}$$

2

JEE Main 2022 (Online) 29th July Morning Shift

MCQ (Single Correct Answer)

+4

-1

In neutral or faintly alkaline medium, $$\mathrm{KMnO}_{4}$$ being a powerful oxidant can oxidize, thiosulphate almost quantitatively, to sulphate. In this reaction overall change in oxidation state of manganese will be :

A

5

B

1

C

0

D

3

3

JEE Main 2022 (Online) 28th July Morning Shift

MCQ (Single Correct Answer)

+4

-1

Match List - I with List - II, match the gas evolved during each reaction.

	List - I		List - II
(A)	$$\left(\mathrm{NH}_{4}\right)_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \stackrel{\Delta}{\longrightarrow}$$	(I)	$$\mathrm{H}_{2}$$
(B)	$$\mathrm{KMnO}_{4}+\mathrm{HCl} \rightarrow$$	(II)	$$\mathrm{N}_{2}$$
(C)	$$\mathrm{Al}+\mathrm{NaOH}+\mathrm{H}_{2} \mathrm{O} \rightarrow$$	(III)	$$\mathrm{O}_{2}$$
(D)	$$\mathrm{NaNO}_{3} \stackrel{\Delta}{\longrightarrow}$$	(IV)	$$\mathrm{Cl}_{2}$$

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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

4

JEE Main 2022 (Online) 28th July Morning Shift

MCQ (Single Correct Answer)

+4

-1

Which of the following has least tendency to liberate $$\mathrm{H}_{2}$$ from mineral acids?

A

Cu

B

Mn

C

Ni

D

Zn

JEE Main Subjects

EXAM MAP

Joint Entrance Examination

JEE Main JEE Advanced WB JEE BITSAT MHT CET KCET COMEDK VITEEE AP EAPCET TS EAMCET IAT (IISER)

Medical

Graduate Aptitude Test in Engineering

GATE CSE GATE ECE GATE EE GATE ME GATE CE GATE PI GATE IN

Civil Services

UPSC Civil Service

Defence

Staff Selection Commission

CBSE