IGCSE Cambridge Secondary Grade 9 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
Which radiations have the most penetrating power?

(A) α radiations	(B) β Radiations
(C) γ Radiations	(D) U – V radiations

Question-2
Which radiations are not deflected in electric and magnetic fields?

(A) α Particles	(B) β Particles
(C) γ Particles	(D) All the above

Question-3
Which of the following radiations are same as helium nuclei?

(A) Alpha radiations	(B) Beta radiations
(C) Gamma radiations	(D) Ultraviolet radiations.

Question-4
Which radiations cause maximum ionization?

(A) α radiations	(B) β radiations
(C) γ radiations	(D) Infrared radiations

Question-5
All radioactive substances should be put in

(A) Metal containers	(B) Lead containers
(C) Carbon containers	(D) Clary containers

Question-6
Subatomic particles with the same mass as that of electrons but with opposite ( positive) charge are called

(A) Isobars	(B) Nuclides
(C) Positrons	(D) Isotopes

Question-7
Protons and neutrons together in the nucleus form

(A) Positron	(B) Electron
(C) Nucleons	(D) α particles

Question-8
The workers handling which substances should wear special form badger?

(A) α radiations	(B) β Radiations
(C) γ Radiations	(D) All the above

Question-9
Which part of a hot cathode ray tube give a fire beam of electrons to it?

(A) Electron gem	(B) Deflecting system
(C) Fluorescent screen	(D) All the above

Question-10
Atoms which have the same number of protons but different numbers of neutrons as that of the element are called its

(A) Nuclides	(B) Isobars
(C) Isotopes	(D) Positrons

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Cambridge Secondary Grade 9

IGCSE

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