Science short questions for UPSC , NEET,JEE,IAS Exam
1. Which one of the
following is not formed in our body ?
(A) Vitamin A
(B) Protein
(C) Enzyme
(D) Hormone
2. Which one of the
following pairs is correctly matched ?
(A) Silver iodide
—Horn Silver
(B) Silver chloride
—Artificial rain
(C) Zinc phosphide
—Rat poison
(D) Zinc sulphide
—Philosopher’s wool
Ans : (C)
3. Which one of the
following gases is essential for photosynthesis process ?
(A) CO
(B) CO 2
(C) N 2
(D) O 2
Ans : (B)
4. Match List-I with
List-II and select the correct answer from the codes given below—
|
List-I
|
List-II
|
|
(a) Morphine
|
1. Antiseptic
|
|
(b) Sodium
|
2. Alloy
|
|
(c) Boric Acid
|
3. Analgesic
|
|
(d) German Silver
|
4. Kerosene oil
|
(A) 4 3 1 2
(B) 2 4 3 1
(C) 3 1 4 2
(D) 3 4 1 2
Ans : (D)
5. Which one of the
following human organs is most susceptible to harmful radiations ?
(A) Eyes
(B) Heart
(C) Brain
(D) Lungs
Ans : (A)
6. The minimum height
of a plane mirror to see the full size image of a person is equal to —
(A) the height of the
person
(B) half the height of
the person
(C) one-fourth the
height of the person
(D) double the height
of the person
Ans : (B)
7. Helium is preferred
to hydrogen in air balloons because it—
(A) is cheaper
(B) is less dense
(C) has greater
lifting power
(D) does not form an
explosive mixture with air
Ans : (B)
8. Retina of the eye
is comparable to which of the following parts of a traditional camera ?
(A) Film
(B) Lens
(C) Shutter
(D) Cover
Ans : (A)
(A) loss of the sense
of taste
(B) loss of the sense
of smell
(C) loss of the sense
of touch
(D) loss of the sense
of heat
Ans : (B)
10. Assertion (A)
: If somebody stops taking green vegetables he will suffer from night blindness.
(A) Both (A) and (R) are true and (R) is the
correct explanation of (A).
(B) Both (A) and (R)
are true, but (R) is not the correct explanation of (A).
(C) (A) is true, but
(R) is false.
(D) (A) is false, but
(R) is true.
Ans : (A)
11. Insectivorous fish
used for mosquito control is—
(A) Hilsa
(B) Labeo
(C) Gambusia
(D) Mystus
Ans : (C)
12. With which of the
physiological process Thrombin is associated ?
(A) Excretion
(B) Blood clotting
(C) Reproduction
(D) Growth
Ans : (B)
13. AIDS is caused by—
(A) Bacteria
(B) Fungus
(C) Helminth
(D) Virus
Ans : (D)
14. Which of the
following is not the normal function of the human kidney ?
(A) Regulation of
water level in the blood.
(B) Regulation of
sugar level in the blood.
(C) Filter out urea.
(D) Secretion of
several hormones.
Ans : (B)
15. The principle of
‘Black hole’ was enunciated by—
(A) C.V. Raman
(B) H.J. Bhabha
(C) S. Chandrashekhar
(D) H. Khurana
Ans : (C)
16. Which one of the
following is used as a moderator in the nuclear reactor ?
(A) Thorium
(B) Graphite
(C) Radium
(D) Ordinary water
Ans : (B)
17. Refrigeration
helps in food preservation by—
(A) killing the germs
(B) reducing the rate
of biochemical reactions
(C) destroying enzyme
action
(D) sealing the food
with a layer of ice
Ans : (B)
18. Electric bulb
filament is made of—
(A) Copper
(B) Aluminium
(C) Lead
(D) Tungsten
Ans : (D)
19. Which mirror is
used as a rear view mirror in the vehicles ?
(A) Plane
(B) Convex
(C) Concave
D) Inverted
Ans : (B)
20. Which one of the
following is a part of Infotech Terminology ?
(A) Protocol
(B) Login
(C) Archie
(D) All the above
Ans : (D)