1. Amalgam
is a mixture of:
a. Any
non metal and chlorine
b. Any
metal and fluorine
c. Any
non metal and lead
d.
Any
metal and mercury
2. By
which one among the following mechanisms, soap removes dirt from the cloth
a. Soap
dissolves the soil
b. Soap
reacts with soil and converts them into soluble silicates
c.
Soap takes away the oily part of the
soil and thus separates the soil from the cloth
d.
The
soap molecules bind with the soil, lift the soil and keep it suspended which
can be rinsed away
3.
If force is expressed in Newton and the distance
in meter, then the work done is expressed in:
a. Joule
b. Kg wt
c.
Kg wt m
d.
Watt
4.
The Law of Natural Selection is associated with:
a.
Dalton
b. Darwin
c.
Kepler
d.
Mendel
5.
When cream is separated from milk:
a.
the
density of milk increases
b.
the density of milk decreases
c.
the density of milk remains unchanged
d.
it becomes more viscous
6.
The element of an electric stove is made of:
a.
Copper
b.
Aluminium
c.
Magnalium
d.
Nicrome
7.
The red blood cells are formed in the:
a.
Heart
b.
Liver
c.
lymph nodes
d.
bone
marrow
8.
Wet-bulb
and dry-bulb thermo-meters are used to determine:
a. the minimum temperature at a place in any 24-hour period
b.
relative humidity
c.
air
pressure
d.
the
maximum temperature at a place in any 24-hour period
9.
One
of the isotopes of iodine has a “half life” of 25 minutes. This information
tells us that if we start with a given quantity of the isotopes, 50 minutes
later there will remain:
a.
one-fourth of the original amount
b.
approximately
the same amount
c.
one-half
of the original amount
d.
none
10.
The
most abundant element the earth’s atmosphere is:
a.
carbon
dioxide
b.
hydrogen
c.
oxygen
d.
nitrogen
11.
Which
of the following diseases is generally spread by fleas?
a.
Small
pox
b.
Tetanus
c.
Typhus
d.
Yellow fever
12.
All
of the following are plant products except:
a.
Cork
b.
Hemp
c.
Silk
d.
Linen
13.
Which of the following colours has got the maximum
refractive index for glass?
a.
Blue
b.
Green
c.
Red
d.
Indigo
14.
For
digestion of fat, bile is needed. This is secreted by the:
a.
Stomach
b.
pituitary
gland
c.
pancreas
d.
liver
15.
Excessive
secretion from the pituitary gland in children results in:
a.
increased height
b.
retarded
growth
c.
weakening
of bones
d.
None
of the above
16.
Weight
of an object put in a satellite orbiting in space around the earth is:
a.
the
same as on the earth
b.
slightly
more then that on the earth
c.
less
then that on the earth
d.
reduced to zero
17. Which of the following food articles contain only one of the
five constituents of diet, viz., fasts, carbohydrates, proteins, mineral salts
and vitamins?
a.
Bread
b.
Mongo
c.
Milk
d.
Sugar
18.
In
which of the following pairs, the two substances forming the pairs are chemically
most dissimilar?
a.
Sugar and paper
b.
Butter
and paraffin wax
c.
Chalk
and marble
d.
Charcoal
and diamond
19.
Primary
rainbow is formed when light suffers:
a. two internal refractions before emerging out of the drop
b.
one internal refraction before emerging out of the
drop
c.
no
internal refraction
d.
either
one or two internal refractions before emerging out of the drop
20.
Astigmatism (for a human eye) can be removed
by using:
a.
concave
lens
b.
convex
lens
c.
cylindrical lens
d.
prismatic
lens
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