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Atoms And Radioactivity
Test Description: For review
Instructions: Answer all questions to get your test result.
1) Process of emission of natural radiation from some elements is called
A
transmutation
B
radioactivity
C
radiotransmutation
D
degeneracy
2) Atoms of an element which have same number of protons but different number of neutrons in their nuclei are known as
A
radiants
B
electrons
C
ions
D
isotopes
3) Artificially produced radioactive elements are known as
A
ions
B
radiants
C
radioisotopes
D
transmutations
4) Nuclei which do not emit radiations naturally are called
A
unstable nuclei
B
stable nuclei
C
negative nuclei
D
positive nuclei
5) Radiations that can ionize matter are
A
gamma radiations
B
all beta, alpha and gamma radiations
C
beta radiations
D
alpha radiations
6) Greatest power of ionization is in
A
gamma rays
B
alpha particles
C
beta particles
D
both alpha and beta particles
7) Greatest penetration power is of
A
beta particles
B
alpha particles
C
gamma rays
D
neutrons
8) Radiation that does not change it's direction inside magnetic field is
A
x-ray
B
alpha particles
C
beta particles
D
gamma rays
9) Per year safe limit of radiation exposure is
A
5 rem
B
10 rem
C
15 rem
D
7 rem
10) Time during which half of unstable radioactive nuclei disintegrate of sample of radioactive element is called the
A
double life
B
half life
C
full life
D
quarter life
*select an answer for all questions
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