1. Consider the following electromagnetic waves
1.
X-rays
2.
Gamma- rays
3.
Microwaves
4.
Radio waves
What is the correct sequence in the order
of their increasing energy?
(a)
4, 3, 1 , 2
(b)
1, 3, 2, 4
(c)
4, 2, 1, 3
(d)
1, 4, 3, 2
2. The best ant the poorest conductors of heat
are respectively
(a)
Silver (Ag) and lead (Pb)
(b)
Copper (Cu) and aluminum (Al)
(c)
Silver (Ag) and gold (Au)
(d)
Copper (Cu) and gold (Au)
3. Which
of the following is used as a moderator in nuclear reactor?
(a)
Ordinary water
(b)
Radium
(c)
Thorium
(d)
Graphite
4. who
among the following received Nobel prize twice ofr the same subject?
(A)
Mari curie
(B)
Frederic Jolit
(C)
Frederic Sanger
(D)
Stanley Cohen
5. Consider the following statements
1.
Discovery of Higgs Boson of which scientists are
almost certain, may discard Einstein’s special theory of relativity
2.
Probable discovery of a particle which moves
faster than light may prove Stephen Hawking wrong.
3.
Probable discovery of a particle that moves
faster than light may go against Einstein’s special theory of relativity.
Which of the statements given above is / are correct?
(a)
1 and 2
(b)
Only 1
(c)
Only 3
(d)
1 and 3
6.
What is difference between Bluetooth and Wi-Fi- devices?
(a)
Bluetooth uses
2.4 GHz radio frequency band, whereas Wi – Fi can use 2.4 GHz or 5 Ghz
frequency band
(b)
Bluetooth is used for Wireless Local Area
Networks (WLAN) only, Wi-Fi is used for wireless wide Area Networks (WWAN)
only.
(c)
When information is transmitted between two
devices using Bluetooth technology, the devices have to be in the line of sight
of each other, but hen Wi- Fi technology is used the devices need not be in the
line of sight of each other
(d)
The statements (a) and (b) given above are correct in these
context
7. Telescopes are placed in space to view
distant galaxies primarily to
(A)
Get close to the observed objects
(B)
Avoid the absorption of light or other
radiations in the atmosphere of the Earth.
(C)
Avoid light pollution from the Earth’s populated
areas
(D)
Avoid steering the telescope against the Earth’s
motion
(a)
Rocket technology
(b)
Fost-free refrigerators
(c)
Sub- marine propulsion
(d)
Researches in superconductivity
9. in n electronic watch, the component corresponding
to the pendulum of a pendulum clock is
(a)
Transistor
(b)
Balance wheel
(c)
Crystal oscillator
(d)
Diode
10.
SONAR is mostly used by
(a)
Doctor
(b)
Engineers
(c)
Astronauts
(d)
Navigators
Answer:
1.
A
2.
A
3.
D
4.
A
5.
D
6.
C
7.
C
8.
A
9.
C
10.
D
No comments:
Post a Comment