September 26, 2014

Quiz 4- Physics -General Science: General Knowledge Question & Answers

31 Q) "An astronaut of mass 60 kg is revolving around the Earth in a satellite. What will be his weight inside the satellite (assuming g = 10 m/s)? "

(a)180 N
(b)600 N
(c)Remain unchanged

32 Q) "In a radioactive decay, a (3-particle is emitted. This happens because "

(a)A neutron is converted to proton and an electron is emitted
(b)Valence electron is driven out of the outer shell
(c)By product of transition of electron from inner to outer shell
(d)By product of transition of electron from outer to inner shell

33 Q) "A circular disc is to be made by using iron and aluminium so that it acquired maximum moment of inertia about the geometrical axis. It is possible with "

(a) iron at interior and aluminium surrounding to it
(b)aluminium at interior and iron surrounding to it
(c)using iron and aluminium layers in alternate order
(d)None of the above

34 Q) "Which one of the following statements about uranium is correct? "

(a) Uranium (U-235) is fissionable by thermal neutrons.
(b) Fast neutrons trigger the fission process in U-235.
(c) U-238 breaks up into fragments, when bombarded by slow neutrons.
(d) U-235 is an unstable isotope and undergoes spontaneous fission.

35 Q) "Which one of the following remains constant while throwing the ball upward? "

(b) Kinetic energy
(c) Acceleration
(d) Velocity

36 Q) For which one of the following is capillary not the reason only?.

(a) Rising of water from the roots of plant to its foliage
(b) Blotting of ink
(c) Rising of underground water
(d) Spread of water drop on a cotton cloth

37 Q) Match List I with List II and select the correct answer using the codes given below the list
List I
List II
(Colour mixture)
(Colour product)
A. Blue + green
1. Green
B. Magenta + yellow
2. Blue
C. Magenta + cyan
3. Cyan
D. Cyan + yellow
4. Red
(a) 3 4 2 1
(b) 3 2 4 1
(c) 4 3 1 2
(d) 4 1 3 2

38 Q) " Assertion (A) Snow flakes and raindrops fall on Earth with a uniform velocity. Reason (R) All freely falling objects have zero weight."

(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

39 Q) "Consider the following statements regarding the electric fused wire I.It has high melting point. II.It has very low specific resistance. III.It is connected in parallel with the electric circuit. Which of the statements given above is/are not correct?"

(a)I, II and III
(b) I and III
(c) II and III
(d) Only II

40 Q) "Consider the following statements I. Clear sky appears blue due to poor scattering of blue wavelength of visible light. II. Red part of light shows more scattering than blue light in the atmosphere. III. In the absence of atmosphere, there would be no scattering of light and sky will be black. Which of the statements given above is/are correct? "

(a) I, II and III
(b) I and III
(c) II and III
(d) Only III


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