JEE Main 2020 (Online) 7th January Evening Slot | JEE Main Year Wise Previous Years Questions - ExamSIDE.Com

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1

JEE Main 2020 (Online) 7th January Evening Slot

MCQ (Single Correct Answer)

+4

-1

The correct order of stability for the following alkoxides is :

JEE Main 2020 (Online) 7th January Evening Slot Chemistry - Alcohols, Phenols and Ethers Question 116 English

JEE Main 2020 (Online) 7th January Evening Slot Chemistry - Alcohols, Phenols and Ethers Question 116 English

A

(C) > (B) > (A)

B

(C) > (A) > (B)

C

(B) > (C) > (A)

D

(B) > (A) > (C)

2

JEE Main 2020 (Online) 7th January Evening Slot

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

In the following reaction, products (A) and (B) respectively, are :

NaOH + Cl₂ $$ \to $$ (A) + side products
(hot and conc.)

Ca(OH)₂ + Cl₂ $$ \to $$ (B) + side products (dry)

A

NaOCl and Ca(OCl)₂

B

NaClO₃ and Ca(ClO₃)₂

C

NaOCl and Ca(ClO₃)₂

D

NaClO₃ and Ca(OCl)₂

3

JEE Main 2020 (Online) 7th January Evening Slot

MCQ (Single Correct Answer)

+4

-1

The bond order and the magnetic characteristics of CN^- are :

A

3, paramagnetic

B

$$2{1 \over 2}$$, paramagnetic

C

3, diamagnetic

D

$$2{1 \over 2}$$, diamagnetic

4

JEE Main 2020 (Online) 7th January Evening Slot

MCQ (Single Correct Answer)

+4

-1

The equation that is incorrect is :

A

$${\left( {\Lambda _m^0} \right)_{KCl}} - {\left( {\Lambda _m^0} \right)_{NaCl}} = {\left( {\Lambda _m^0} \right)_{KBr}} - {\left( {\Lambda _m^0} \right)_{NaBr}}$$

B

$${\left( {\Lambda _m^0} \right)_{NaBr}} - {\left( {\Lambda _m^0} \right)_{NaI}} = {\left( {\Lambda _m^0} \right)_{KBr}} - {\left( {\Lambda _m^0} \right)_{NaBr}}$$

C

$${\left( {\Lambda _m^0} \right)_{NaBr}} - {\left( {\Lambda _m^0} \right)_{NaCl}} = {\left( {\Lambda _m^0} \right)_{KBr}} - {\left( {\Lambda _m^0} \right)_{KCl}}$$

D

$${\left( {\Lambda _m^0} \right)_{{H_2}O}} = {\left( {\Lambda _m^0} \right)_{HCl}} + {\left( {\Lambda _m^0} \right)_{NaOH}} - {\left( {\Lambda _m^0} \right)_{NaCl}}$$

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