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

Question-1
The workers handling which substances should wear special form badger?

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

Question-2
A hydrogen atom minus an electron forms

(A) Neutron	(B) Electron
(C) Proton	(D) Positron

Question-3
Radioisotope is used on the treatment of

(A) Cancer	(B) AIDS
(C) Lever Xerosis	(D) All the above

Question-4
Which radiations have the most penetrating power?

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

Question-5
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-6
The harmful radioactive effects in the absence of any actual radioactive materials are called

(A) Isotopes	(B) Carbon dating
(C) Back ground radiations	(D) Ozone layer

Question-7
Which radiations are not deflected in electric and magnetic fields?

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

Question-8
Which part of a hot cathode ray tube converts electric signal to visual pattern?

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

Question-9
All radioactive substances should be put in

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

Question-10
Which of the following radiations are same as helium nuclei?

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

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Cambridge Secondary Grade 9

IGCSE

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