1
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct representation in six membered pyranose form for the following sugar [X] is

JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Biomolecules Question 32 English

A
JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Biomolecules Question 32 English Option 1
B
JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Biomolecules Question 32 English Option 2
C
JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Biomolecules Question 32 English Option 3
D
JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Biomolecules Question 32 English Option 4
2
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

But-2-yne is reacted separately with one mole of Hydrogen as shown below :

JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Hydrocarbons Question 30 English

A. A is more soluble than B.

B. The boiling point & melting point of A are higher and lower than B respectively.

C. A is more polar than B because dipole moment of A is zero.

D. $$\mathrm{Br_2}$$ adds easily to B than A.

Identify the incorrect statements from the options given below :

A
A and B only
B
A, C & D only
C
B, C & D only
D
C and D only
3
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Hydrogen is an environment friendly fuel.

Reason R : Atomic number of hydrogen is 1 and it is a very light element.

In the light of the above statements, choose the correct answer from the options given below :

A
Both A and R are true but R is NOT the correct explanation of A
B
A is false but R is true
C
A is true but R is false
D
Both A and R are true and R is the correct explanation of A
4
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Resonance in carbonate ion $$\left(\mathrm{CO}_{3}{ }^{2-}\right)$$ is

JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Basics of Organic Chemistry Question 53 English

Which of the following is true?

A
It is possible to identify each structure individually by some physical or chemical method.
B
All these structures are in dynamic equilibrium with each other.
C
Each structure exists for equal amount of time.
D
$$\mathrm{CO}_{3}{ }^{2-}$$ has a single structure i.e., resonance hybrid of the above three structures.
JEE Main Papers
2023
2021
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12