1
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statements is NOT true about vacancy defect?

A

It arises when a particle is missing from its regular site in the crystal lattice during crystallisation.

B

The vacancy defect can also be developed when the substance is heated.

C

In this the mass of substance decreases.

D

The density of crystal remains same when vacancy defect is created.

2
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is the most abundant chalcogens?

A

Oxygen

B

Sulphur

C

Selenium

D

Tellurium

3
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the number of moles of ' C ' atoms and ' H ' atoms respectively present in n mole molecule represented as follows?

MHT CET (PCB) 2025 9th April Morning Shift Chemistry - General Organic Chemistry Question 2 English
A

$n$ and n

B

$2 n$ and $2 n$

C

$2 n$ and $n$

D

$3 n$ and n

4
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

For a certain reaction, $\Delta \mathrm{H}^{\circ}=219 \mathrm{~kJ}$ and $\Delta \mathrm{S}^{\circ}=-21 \mathrm{JK}^{-1}$. Find the value of $\Delta \mathrm{G}^{\circ}$.

A

202.74 kJ

B

-312.74 kJ

C

225.26 kJ

D

-325.06 kJ