GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 108

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 108

1071). Planets do not twinkle because,
A). they emit light continuously
B). they are luminous sources of light
C). they are nearer to us and so their light does not pass through the atmosphere
D). they are nearer to us and So the minor variations in their intensity are not noticeable

Answer: they are nearer to us and so their light does not pass through the atmosphere


   
1072). The ozone layer in atmosphere helps in the
A). increases of oxygen supply
B). increase of temperature
C). acceleration of photo synthesis
D). prevents penetrat1on of ultraviolet rays

Answer: prevents penetrat1on of ultraviolet rays


   
1073). If a body is to escape from the earth's gravitational force, it must be given a minimum velocity of
A). 8.2 metre/sec
B). 11.2 metre/sec
C). 8.2 kilometre/sec
D). 11.2 kilometre/sec

Answer: 11.2 kilometre/sec


   
1074). Consider the following statements:
Assertion (A): A solid iron piece floats in mercury but sinks in water Reason (R) :Density of iron is less than that of water and mercury Now select your answer according to the coding scheme is given below:
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

Answer: (A) is true, but (R) is false


   
1075). Match List-I With List-II correctly and select your answer using the codes given below:
List-I                                                   List-II
a) Moment of a force                           1. Joule
b) Energy                                           2. F X S
c) Power                                            3. N-m
d) Work                                             4. Watt

Below codes are given in A B C D order
A). 3 1 4 2
B). 2 3 4 1
C). 3 4 1 2
D). 2 4 3 1

Answer: 3 1 4 2



1076). Mirage is due to
A). reflection of light
B). total internal reflection of light
C). diffraction of light
D). refraction of light

Answer: total internal reflection of light


   
1077). An aneroid barometer used
A). mercury
B). alcohol
C). distilled water
D). no liquid at all

Answer: no liquid at all


   
1078). Light of which colour has the longest wavelength?
A). Violet
B). Green
C). Yellow
D). Red

Answer: Red


   
1079). Review the following statements:
I. Boiling takes place at all temperature 

II. Evaporation takes place at a particular temperature 

III. Boiling takes place at the surface of the liquid 

IV. Evaporation takes place throughout the liquid. 

of the statements:
A). All are correct
B). All are wrong
C). I and II are correct, III and IV are wrong
D). I and III are correct, II and IV are wrong

Answer: All are wrong


   
1080). Instruments used for measuring high temperature is known as
A). hygrometer
B). pyrometer
C). photometer
D). sonometer

Answer: pyrometer