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1

JEE Main 2023 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Correct order of spin only magnetic moment of the following complex ions is :

(Given At.no. Fe : 26, Co : 27)

A

$$\mathrm{[CoF_6]^{3-} > [FeF_6]^{3-} > [Co(C_2O_4)_3]^{3-}}$$

B

$$\mathrm{[FeF_6]^{3-} > [Co(C_2O_4)_3]^{3-} > [CoF_6]^{3-}}$$

C

$$\mathrm{[FeF_6]^{3-} > [CoF_6]^{3-} > [Co(C_2O_4)_3]^{3-}}$$

D

$$\mathrm{[Co(C_2O_4)_3]^{3-} > [CoF_6]^{3-} > [FeF_6]^{3-}}$$

2

JEE Main 2023 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Reaction of propanamide with $$\mathrm{Br_2/KOH(aq)}$$ produces :

A

Propanenitrile

B

Propylamine

C

Ethylnitrile

D

Ethylamine

3

JEE Main 2023 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Following tetrapeptide can be represented as

JEE Main 2023 (Online) 29th January Evening Shift Chemistry - Biomolecules Question 38 English

(F, L, D, Y, I, Q, P are one letter codes for amino acids)

A

YQLF

B

FIQY

C

PLDY

D

FLDY

4

JEE Main 2023 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II

	List I		List II
A.	van't Hoff factor, i	I.	Cryoscopic constant
B.	$$\mathrm{k_f}$$	II.	Isotonic solutions
C.	Solutions with same osmotic pressure	III.	$$\mathrm{\frac{Normal\,molar\,mass}{Abnormal\,molar\,mass}}$$
D.	Azeotropes	IV.	Solutions with same composition of vapour above it

Choose the correct answer from the options given below :

A

A-III, B-I, C-IV, D-II

B

A-III, B-I, C-II, D-IV

C

A-III, B-II, C-I, D-IV

D

A-I, B-III, C-II, D-IV

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