Explore topic-wise MCQs in Chemistry.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the mean velocity of one Mole neon gas at a temperature of 400 Kelvin?

A. 11.533 m/s
B. 357.578 m/s
C. 367.79 m/s
D. 34 m/s
Answer» B. 357.578 m/s
Discussion
2.

What is the ratio of the velocities of 2 moles of hydrogen to five moles of helium?

A. ( sqrt{14} )
B. ( sqrt{10} )
C. ( sqrt{20} )
D. ( sqrt{50} )
Answer» C. ( sqrt{20} )
Discussion
3.

Which among the following options do you think has the highest average speed?

A. chlorine
B. hydrogen
C. neon
D. oxygen
Answer» C. neon
Discussion
4.

What is the most probable speed of oxygen gas with the mass of 32 grams at 27-degree centigrade?

A. 33.74 m/s
B. 44.78 m/s
C. 57.94 m/s
D. 549.14 m/s
Answer» C. 57.94 m/s
Discussion
5.

The root mean square speed of a gas at a certain condition is 1.128 times greater than the most probable speed.

A. true
B. false
Answer» C.
Discussion
6.

Which of the following is greater for identical conditions and the same gas?

A. most probable speed
B. average speed
C. root mean square speed
D. most probable and average speed have the same value
Answer» D. most probable and average speed have the same value
Discussion
7.

What is the ratio of root mean square speed of 16 grams of Oxygen to 4 grams of hydrogen?

A. 2
B. 3
C. 4
D. 1
Answer» B. 3
Discussion
8.

The speed of three particles is recorded as 3 m/s, 4 m/s, and 5 m/s. What is a root mean square speed of these particles?

A. 4.082 m/s
B. 2.07 m/s
C. 3.87 m/s
D. 3.082 m/s
Answer» B. 2.07 m/s
Discussion
9.

What is the ratio of urms to ump in oxygen gas at 298k?

A. 1.124
B. 1.224
C. 1.228
D. 1.128
Answer» C. 1.228
Discussion
10.

Calculate the root mean square speed of hydrogen in m/s at 27 C?

A. 2835.43 m/s
B. 2635.43 m/s
C. 2735.43 m/s
D. 2731.43 m/s
Answer» D. 2731.43 m/s
Discussion