1
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 35 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
2
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
3
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 75 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.
4
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Which of the following represents the lattice structure of $$\mathrm{A_{0.95}O}$$ containing $$\mathrm{A^{2+},A^{3+}}$$ and $$\mathrm{O^{2-}}$$ ions?

JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Solid State Question 10 English

A
B only
B
A and B only
C
A only
D
B and C only
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