171.The SI unit of
thermodynamic temperature is
A. Celsius
B. Fahrenheight
C. Kelvin
D. None of these
172.The shortest distance
between crest to crest is called
A. Phare
B. thoughs
C. Amplitude
D. Wavelength
173.The speed of sound is
fastest in
A. Solids
B. Liquids
C. Gasses
D. Vaccum
174.The speed of sound is
slowest in
A. Solids
B. Liquids
C. Gasses
D. Vaccum
175.Radioactivity was
discovered by
A. Henri Becquerel
B. Pierre Curie
C. Marie Curie
D. Rutherford
176.Which from the following
has the greatest ionising power?
A. Alpha particles
B. Beta particles
C. Gamma rays
D. All three has same
ionising power
177.Which from the following
has the greatest penetrating power?
A. Alpha particles
B. Beta particles
C. Gamma rays
D. All three have same
penetrating power
178.Which from the following
has the greatest speed?
A. Alpha
B. Beta
C. Gamma
D. None
179.At night
A. The land cools faster
than the water in the sea
B. The water in the sea
cools faster than the land
C. The land and the water in
the sea cools together
D. None of these
180.The chemical name of
chalk is
A. Sodium nitrate
B. Zinc sulfate
C. Sulphuric acid
D. Calcium carbonate
ANSWERS:
171.C
172.D
173.A
174.C
175.A
176.A
177.C
178.C
179.A
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