10th Chemistry Chapter 8 Exercise Quiz
Chemistry 10th Class Chapter 8 Chemical Industries Exercise Online Quiz
Online quizzes are an excellent way for students to assess their understanding of key concepts. At topper.pk, we provide quizzes for 10th Class Chemistry Chapter 8: Chemical Industries, aligned with the latest syllabus. These quizzes are designed to prepare students for school exams as well as competitive exams such as PPSC, NTS, CSS, and others. For further understanding, check out our platform for comprehensive study materials.
Below are some important MCQs with answers for Chapter 8: Chemical Industries.
10th Chemistry Chapter 16 Exercise Solved MCQS Online-Topper.pk
(I) Isotopes are atoms of the same element with different: (chapter 16)
a
Atomic mass
b
Atomic number
c
Number of protons
d
Number of electrons
(II) One of the isotopes of uranium is U-238. The number of neutrons in this isotope is: (chapter 16)
a
92
b
146
c
238
d
330
(III) Which among the following radiations has more penetrating power? (chapter 16)
a
A beta particle
b
A gamma ray
c
An alpha particle
d
All have the same penetrating ability
(IV) What happens to the atomic number of an element which emits one alpha particle? (chapter 16)
a
Increases by 1
b
Stays the same
c
Decreases by 2
d
Decreases by 1
(V.) The half-life of a certain isotope is one day. What is the quantity of the isotope after two days? (chapter 16)
a
One-half
b
One-quarter
c
One-eighth
d
None of these
(VI.) When Uranium (92 protons) eject a beta particle, how many protons will be in remaining nucleus? (chapter 16)
a
89 protons
b
90 protons
c
91 protons
d
93 protons
(VII) Release of energy by the Sun is due to: (chapter 16)
a
Nuclear fission
b
Nuclear fusion
c
Burning of gases
d
Chemical reaction
(VIII) When a heavy nucleus splits into two lighter nuclei, the process would: (chapter 16)
a
Release nuclear energy
b
Absorb nuclear energy
c
Release chemical energy
d
Absorb chemical energy
(IX) The reason carbon-dating works is that: (chapter 16)
a
Plants and animals are such strong emitters of carbon 14
b
After plant or animal dies, it stops taking in fresh carbon-14
c
There is so much non radioactive carbon dioxide in air
d
When plant or animal die, they absorb fresh carbon 14
(X) When two light nuclei combine to form a heavier nucleus, the process is called: (chapter 16)
a
Nuclear fission
b
Nuclear fusion
c
Radioactive decay
d
Chain reaction
(XI) The process of slowing down neutrons to make them more effective in fission reactions is called: (chapter 16)
a
Moderation
b
Absorption
c
Acceleration
d
Diffusion
(XII) The device used to measure radioactivity is called: (chapter 16)
a
Geiger counter
b
Ammeter
c
Voltmeter
d
Galvanometer
(XIII) Which one of the following is commonly used as a nuclear reactor fuel? (chapter 16)
a
Uranium-235
b
Thorium-232
c
Plutonium-239
d
Both a and c
(XIV) In a nuclear reactor, the function of control rods is to: (chapter 16)
a
Accelerate the neutrons
b
Absorb the neutrons
c
Convert neutrons to protons
d
Generate more neutrons
(XV) Heavy water is used in some nuclear reactors as a: (chapter 16)
a
Moderator
b
Fuel
c
Shield
d
Coolant
(XVI) The radioactive isotope commonly used in medical diagnosis is: (chapter 16)
a
Carbon-14
b
Iodine-131
c
Uranium-235
d
Thorium-232
(XVII) The first man-made nuclear chain reaction was carried out in: (chapter 16)
a
USA
b
Germany
c
Japan
d
Russia
(XVIII) Radioactive substances emit radiations due to: (chapter 16)
a
Chemical reactions
b
Instability in nuclei
c
Nuclear fusion
d
Low atomic number
(XIX) The energy produced in a nuclear power plant is due to: (chapter 16)
a
Nuclear fission
b
Nuclear fusion
c
Chemical reactions
d
Electrolysis
(XX) Which of the following gases is used as a coolant in nuclear reactors? (chapter 16)
a
Helium
b
Carbon dioxide
c
Hydrogen
d
Both a and b