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1

JEE Main 2020 (Online) 7th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

The increasing order to P_kb for the following compounds will be : JEE Main 2020 (Online) 7th January Morning Slot Chemistry - Basics of Organic Chemistry Question 159 English

JEE Main 2020 (Online) 7th January Morning Slot Chemistry - Basics of Organic Chemistry Question 159 English

A

(A) < (B) < (C)

B

(C) < (A) < (B)

C

(B) < (A) < (C)

D

(B) < (C) < (A)

2

JEE Main 2020 (Online) 7th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

At 35^oC, the vapour pressure of CS₂ is 512 mm. Hg and that of acetone is 344 mm Hg. A solution of CS₂ in acetone has a total vapour pressure of 600 mm Hg. The false statement amongst the following is :

A

CS₂ and acetone are less attracted to each other than to themselves.

B

a mixture of 100 ml. CS₂ and 100 ml. acetone has a volume < 200 ml.

C

Heat must be absorved in order to produce the solution 35^oC

D

Raoult's law is not obeyed by this system.

3

JEE Main 2020 (Online) 7th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

Oxidation number of potassium in K₂O. K₂O₂ and KO₂ respectively is :

A

+1, +2 and + 4

B

+1, +1 and + 1

C

+2, +1 and $$ + {1 \over 2}$$

D

+1, +4, and +2

4

JEE Main 2020 (Online) 7th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

The theory that can completely/properly explain the nature of bonding in [Ni(Co)₄] is :

A

Wemer's theory

B

Valence bond theory

C

Crystal field theory

D

Molecular orbital theory

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