1
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The water having more dissolved O2 is :
A
boiling water
B
water at 80$$^\circ$$C
C
polluted water
D
water at 4$$^\circ$$C
2
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following statements for D.I. Mendeleeff, is incorrect?
A
He authored the textbook - Principles of Chemistry
B
At the time, he proposed Periodic Table of elements structure of atom was known.
C
Element with atomic number 101 is named after him.
D
He invented accurate barometer.
3
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which purification technique is used for high boiling organic liquid compound (decomposes near its boiling point)?
A
Simple distillation
B
Steam ditillation
C
Fractional distillation
D
Reduced pressure distillation
4
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following compounds will provide a tertiary alcohol or reaction with excess of CH3MgBr followed by hydrolysis?
A
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 81 English Option 1
B
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 81 English Option 2
C
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 81 English Option 3
D
JEE Main 2021 (Online) 22th July Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 81 English Option 4
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