1.
The pH of fresh milk is 6. When it turn sour,
the pH
(a)
Becomes < 6
(b)
Remain the same , i.e. 6
(c)
Becomes > 6
(d)
Becomes neutral i.e. 7
2.
What is the most conspicuous salient feature of
people with ‘progeria?
(a)
More hairs on body
(b)
Less immunity to opportunistic infections
(c)
Faster rate of ageing
(d)
Suffer from
infertility
3.
Which one among the following hormones
stimulates the plant cells to grow in a manner such that the plant appears to
be bent towards light?
(a)
Cytokinin
(b)
Auxin
(c)
Gibberelin
(d)
Abscisic acid
4.
Consider the following kinds of organisms
1.
Bat 2.
Bee 3. Bird
Which
of the above is/ are pollinating agent / agents?
(a)
1 and 2
(b)
Only 2
(c)
1 and 3
(d)
All of these
5.
Which one
among the following minerals is essential for the transmission of nerve
impulses in the nerve fibres of human body?
(a)
Calcium
(b)
Cobalt
(c)
Iodine
(d)
Sodium
6.
The gastrointestinal hormones bamely secretin
and cholecystokin secreted by duodenal epithelium activate respectively. Which
organs to discharge their secretions?
(a)
Pancreas and gall bladder
(b)
Gall bladder and stomach
(c)
Pancreas and stomach
(d)
Stomach and
small intestine
7.
Magnetic resonance imaging (MRI) is used in
medical diagnosis to obtain images our internal body organs. This is primarily
possible because
(a)
Our body possess a permanent magnet
(b)
MRI uses an external magnet to generate a
magnetic field in our body
(c)
MRI uses an external electric field to generate
magnetic field in our body
(d)
Ions motions along our nerve cells generates
magnetic field.
8.
Consider the given statements.
1.
Warm- blooded animals can remain active in cold
environment in which hcold0nloded animals can hardly move
2.
Cold –blooded animals require much less energy
to survive than warm- blooded animals.
Which of the statements given above is/ are correct?
(a)
Only 1
(b)
Only 2
(c)
Both 1 and 2
(d)
Neither 1 nor 2
9.
Which of
the following is/ are produced as a result of photosynthesis is in green plants
in addition to carbohydrate?
(a)
Carbon dioxide only
(b)
Oxygen only
(c)
Water and oxygen
(d)
Water and carbon dioxide
10.
Cancer is more common in older people because
(a)
Their immune systems have degenerated
(b)
The
supply of certain hormones declines with age
(c)
Their bodies are unable to adjust to the
changing environment
(d)
They have accumulated more mutations
Answer:
1.
B
2.
C
3.
D
4.
D
5.
D
6.
A
7.
C
8.
C
9.
B
10.
D
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