JEE Main 2020 (Online) 8th January Morning Slot | JEE Main Year Wise Previous Years Questions - ExamSIDE.Com

1

JEE Main 2020 (Online) 8th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

The complex that can show fac- and mer-isomers is :

A

[CoCl₂(en)₂]

B

[Pt(NH₃)₂Cl₂]

C

[Co(NH₃)₃(NO₂)₃]

D

[Co(NH₃)₄Cl₂]⁺

2

JEE Main 2020 (Online) 8th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

The rate of a certain biochemical reaction at physiological temperature (T) occurs 10⁶ times faster with enzyme than without. The change in the activation energy upon adding enzyme is :

A

+ 6RT

B

– 6 (2.303)RT

C

– 6RT

D

+ 6(2.303)RT

3

JEE Main 2020 (Online) 8th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

The stoichiometry and solubility product of a salt with the solubility curve given below is, respectively : JEE Main 2020 (Online) 8th January Morning Slot Chemistry - Ionic Equilibrium Question 97 English

JEE Main 2020 (Online) 8th January Morning Slot Chemistry - Ionic Equilibrium Question 97 English

A

XY, 2 × 10^–6 M³

B

XY₂, 1 × 10^–9 M³

C

XY₂, 4 × 10^–9 M³

D

X₂Y, 2 × 10^–9 M³

4

JEE Main 2020 (Online) 8th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

The third ionization enthalpy is minimum for :

A

Ni

B

Co

C

Mn

D

Fe

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