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.

How many significant figures are there in 60.6?

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

Multiply 1.2 and 3.91. Obtain the result as per the rules of significant figures.

A. 4.692
B. 4.69
C. 5
D. 4.7
Answer» E.
Discussion
3.

The exact value is 150m. A students record it as 149.1m in 1st turn and 150.8m in the 2nd turn. Comment his/her recordings.

A. precise
B. accurate
C. neither precise nor accurate
D. both precise and accurate
Answer» C. neither precise nor accurate
Discussion
4.

The exact value is 150m. A students record it as 140.1m in 1st turn and 140.8m in the 2nd turn. Comment his/her recordings.

A. precise
B. accurate
C. neither precise nor accurate
D. both precise and accurate
Answer» B. accurate
Discussion
5.

How many significant figures does 63180 have?

A. 5
B. 4
C. 1
D. 2
Answer» C. 1
Discussion
6.

How many significant figures does 0.057 have?

A. 2
B. 4
C. 3
D. 0
Answer» B. 4
Discussion
7.

A piece of iron is 5 inches long. How much would it be in centimeters?

A. 12.7 cm
B. 6.35 cm
C. 5 cm
D. 500 cm
Answer» B. 6.35 cm
Discussion
8.

How many seconds are there in a half day?

A. 86,400 seconds
B. 43,200 seconds
C. 172,800 seconds
D. 3660 seconds
Answer» C. 172,800 seconds
Discussion
9.

_________ is referred to as the closeness of different measurements for the same quantity.

A. Accuracy
B. Precision
C. Analysis
D. Dimension
Answer» C. Analysis
Discussion
10.

Write 6354000000 in scientific notation.

A. 6.354 x 10<sup>9</sup>
B. 6354 x 10<sup>6</sup>
C. 0.64 x 10<sup>10</sup>
D. 6354000 x 10<sup>3</sup>
Answer» B. 6354 x 10<sup>6</sup>
Discussion