Explore topic-wise MCQs in Chemistry.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Gravitational force = Gm1m2/r2.

A. True
B. False
Answer» B. False
Discussion
2.

Pick out the isobar of 18Ar40.

A. <sub>12</sub>Mg<sup>24</sup>
B. <sub>26</sub>Fe<sup>58</sup>
C. <sub>19</sub>K<sup>40</sup>
D. <sub>28</sub>Ni<sup>64</sup>
Answer» D. <sub>28</sub>Ni<sup>64</sup>
Discussion
3.

Find out the number of neutrons, protons, and electrons of 17Cl37 respectively.

A. 20, 20, 17
B. 17, 17, 20
C. 20, 17, 17
D. 17, 17, 17
Answer» D. 17, 17, 17
Discussion
4.

Chemical properties of an atom are dependent on a number of electrons in that particular atom.

A. True
B. False
Answer» B. False
Discussion
5.

If the number of protons and neutrons of an element is 13 and 14 respectively, then what s the atomic number(Z) and mass number(A)?

A. 13, 13
B. 13, 27
C. 14, 13
D. 27, 14
Answer» C. 14, 13
Discussion
6.

Which of the following statements you think is wrong regarding particle scattering effect?

A. particles mostly move through the gold foil having zero deflection
B. A small fraction are deflected
C. One in Twenty Thousand turns 180
D. The thickness of the gold foil is about 100 m
Answer» E.
Discussion
7.

Elements do emit radiation on their own and this property is known as _____

A. Radioactivity
B. Refraction
C. Absorption
D. Adsorption
Answer» B. Refraction
Discussion
8.

Which of the following models are not the same as Thomson Model of Atom?

A. plum pudding model
B. watermelon model
C. raisin pudding model
D. nuclear model
Answer» E.
Discussion
9.

What is the absolute charge of a proton?

A. +1.602176 10<sup>-27</sup>
B. 1.602176 10<sup>-19</sup>
C. +1.602176 10<sup>-19</sup>
D. 1.602176 10<sup>-27</sup>
Answer» C. +1.602176 10<sup>-19</sup>
Discussion