1.
How
can the spherical aberration of a human eye be corrected?
a.
By
using a cylindrical lens
b.
By using a plano-convex lens
c.
By
using a thin lens
d. None of the above
2.
An
electric bell is placed inside a bell jar which is connected to a vacuum pump.
When the bell jar is completely evacuated:
a.
no sound can be heard
b.
the
loudness of the sound will remain unchanged
c.
the
loudness of the sound will increase
d.
the
loudness of the sound will decrease
3.
Which of the following vitamins is stored in the
liver?
a. Vitamin A
b.
Vitamin C
c.
Vitamin E
d.
Vitamin K
4.
Which of the following is needed by a person
suffering from diabetes?
a.
Antibiotics
b. Insulin
c.
Penicillin
d.
Streptomycin
5.
An element common to all acids is:
a.
Oxygen
b. Hydrogen
c.
Sulphur
d.
Chlorine
6.
Which of the following statements relating to
sound and light is true?
a.
Light is a form of kinetic energy, whereas sound
is a form of potential energy.
b.
Light can be reflected but sound cannot be.
c.
Light travels faster in air than sound does.
d.
Sound travels in waves but light does not.
7.
Friction can be reduced by changing over from:
a. sliding to rolling
b.
rolling to sliding
c. potential
energy to kinetic energy
d.
dynamic to static
8.
Which
of the following is a physical change?
a.
Oxidation
b.
Reduction
c.
Decomposition
d.
Sublimation
9.
Pressure
cooker cooks rice faster because:
a.
it
always lets the steam escape
b.
high
pressure crushes the hard covering of rice grains
c.
it
does not let the heat energy escape easily
d.
high pressure raises the boiling point of water
10.
The
isotopes of an element contain the same number of:
a.
neutrons
and protons
b.
protons but different number of neutrons
c.
neutrons
and protons but different number of electrons
d.
neutrons
and electrons but different number if protons
11.
The
theory of inheritance of acquired characters was propounded by:
a.
Charles
Darwin
b.
Gregor
Mendel
c.
J. B. Lamarck
d.
Weismann
12.
Which
one of the following is not allied to Geophysical Sciences?
a.
Hydrology
b.
Meteorology
c.
Palaeontology
d.
Seismology
13.
Brain
of a normal human adult weighs about:
a.
1 lb
b.
2 lb
c.
3 lb
d.
4 lb
14.
Photophobia
is:
a.
a
disease caused by too much sunlight
b.
abnormal intolerance of light
c.
the
adjustment of the eye for light
d.
the
ability to perceive light
15.
Which
one of the following elements is least likely to be found in commercial fertilizers?
a.
Nitrogen
b.
Phosphorus
c.
Potassium
d.
Silicon
16.
Lime
is sometimes applied to soil in order to:
a.
increase the alkalinity of the soil
b.
increase
the acidity of the soil
c.
restore
nitrates to the soil
d.
make
the soil more porous
17.
An
element found in all organic compounds is:
a.
Oxygen
b.
Calcium
c.
Nitrogen
d.
Carbon
18.
Most
commonly used bleaching agent is:
a.
Alcohol
b.
carbon
dioxide
c.
chlorine
d.
sodium
chloride
19.
In which
season do we need more fast?
a.
Rainy
season
b.
Spring
c.
Winter
d.
Summer
20.
Which
out of the following organs dies not eliminate waste products from the body?
a.
Large intestine
b.
Liver
c.
Kidney
d.
Skins
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