JEE Main 2019 (Online) 12th January Morning Slot | JEE Main Year Wise Previous Years Questions - ExamSIDE.Com

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1

JEE Main 2019 (Online) 12th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Iodine reacts with concentrated HNO₃ to yield Y along with other products. The oxidation state of iodine in Y, is :

A

3

B

1

C

7

D

5

2

JEE Main 2019 (Online) 12th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

The correct order for acid strength of compounds :

CH $$ \equiv $$ CH, CH₃–C $$ \equiv $$ CH and CH₂ = CH₂ is as follows

A

CH $$ \equiv $$ CH > CH₂ = CH₂ > CH₃ – C $$ \equiv $$ CH

B

CH₃ – C $$ \equiv $$ CH > CH₂ = CH₂ > HC $$ \equiv $$ CH

C

HC $$ \equiv $$ CH > CH₃ – C $$ \equiv $$ CH > CH₂ = CH₂

D

CH₃ – CH $$ \equiv $$ CH > CH $$ \equiv $$ CH > CH₂ = CH₂

3

JEE Main 2019 (Online) 12th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

In the following reaction, products A and B are –

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 174 English

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 174 English

A

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 174 English Option 1

B

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 174 English Option 2

C

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 174 English Option 3

D

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 174 English Option 4

4

JEE Main 2019 (Online) 12th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 124 English

can not be prepared by -

A

CH₃CH₂COCH₃ + PhMgX

B

PhCOCH₃ + CH₃CH₂MgX

C

PhCOCH₂CH₃ + CH₃MgX

D

HCHO + PhCH(CH₃)CH₂MgX

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