GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 038
371). Which one of the following statements is correct?
A slab of ice kept in a room
A). does not radiate heat
B). does not radiate heat but absorbs heat from the surrounding
C). radiates heat but absorbs more heat from the surrounding
D). radiates heat more than that absorbed by it from the surrounding
Answer: does not radiate heat but absorbs heat from the surrounding
372). Consider the following statements :
The fog during winter season is more on the day when
I. sky is clear
II. sky is cloudy
III. wind is blowing
Which of the statements given above is/are correct?
A). I only
B). II and III
C). II and III
D). II only
Answer: I only
373). Consider the following statements regarding electric fuse wire
I. It has low melting point
II. It has very high specific resistance
III. It is connected in parallel with the electric circuit
Which of the statements given above is/are correct?
A). I only
B). l and III
C). I and II
D). II and III
Answer: l and III
374). Consider the following statements
I. 1 gram of water at 100∘C and 1 gram of steam at 100∘C contain same amount of heat ,
II. 1 1 m^3 of dry air is heavier than 1 m^3of humid air.
III. Density of a substance is CGS system is numerically equal to its specific gravity.
which of the statements given above is/are correct?
A). I only
B). III only
C). I and III
D). II and III
Answer: I and III
375). Consider the following statements :
I. Atom bomb is based upon the principle of uncontrolled nuclear fusion
II. Hydrogen bomb is based upon the principle of uncontrolled nuclear fission
III. Nuclear reactor is based upon the principle of controlled nuclear fission Which of the statements given above is/are correct?
A). III only
B). I and II
C). II and III
D). I, II and III
Answer: III only
376). An astronaut of mass 60 kg is revolving around the earth in a satellite. What will be his weight inside the satellite assuming g=10ms^−2?
A). 1200N
B). 600 N
C). Infinite
D). zero
Answer: zero
377). A strong bar magnet is allowed to fall through a ring made up of copper wire such that its magnetic axis is perpendicular to the plane of the ring. What will be the acceleration of the magnet during its fall?
A). Equal to g
B). Greater than g
C). Less than g
D). zero
Answer: Less than g
378). What is the number of neutral points for a bar magnet with its north pole pointing geographical north?
A). Zero
B). One
C). Two
D). Infinite
Answer: Two
379). The specific gravity of a substance is measured by a hydrometer at the sea level. If the measurement is done at the top of a mountain, what would be the specific gravity?
A). Zero
B). More than that measured at the sea level
C). Less than that measured at the sea level
D). Same as that measured at the sea level
Answer: Same as that measured at the sea level
380). Nuclear fusion. reaction require very high temperatures so as to overcome
A). Van der Waal's forces
B). Nuclear forces
C). Gravitational forces
D). Coulomb forces
Answer: Coulomb forces
A slab of ice kept in a room
A). does not radiate heat
B). does not radiate heat but absorbs heat from the surrounding
C). radiates heat but absorbs more heat from the surrounding
D). radiates heat more than that absorbed by it from the surrounding
Answer: does not radiate heat but absorbs heat from the surrounding
372). Consider the following statements :
The fog during winter season is more on the day when
I. sky is clear
II. sky is cloudy
III. wind is blowing
Which of the statements given above is/are correct?
A). I only
B). II and III
C). II and III
D). II only
Answer: I only
373). Consider the following statements regarding electric fuse wire
I. It has low melting point
II. It has very high specific resistance
III. It is connected in parallel with the electric circuit
Which of the statements given above is/are correct?
A). I only
B). l and III
C). I and II
D). II and III
Answer: l and III
374). Consider the following statements
I. 1 gram of water at 100∘C and 1 gram of steam at 100∘C contain same amount of heat ,
II. 1 1 m^3 of dry air is heavier than 1 m^3of humid air.
III. Density of a substance is CGS system is numerically equal to its specific gravity.
which of the statements given above is/are correct?
A). I only
B). III only
C). I and III
D). II and III
Answer: I and III
375). Consider the following statements :
I. Atom bomb is based upon the principle of uncontrolled nuclear fusion
II. Hydrogen bomb is based upon the principle of uncontrolled nuclear fission
III. Nuclear reactor is based upon the principle of controlled nuclear fission Which of the statements given above is/are correct?
A). III only
B). I and II
C). II and III
D). I, II and III
Answer: III only
376). An astronaut of mass 60 kg is revolving around the earth in a satellite. What will be his weight inside the satellite assuming g=10ms^−2?
A). 1200N
B). 600 N
C). Infinite
D). zero
Answer: zero
377). A strong bar magnet is allowed to fall through a ring made up of copper wire such that its magnetic axis is perpendicular to the plane of the ring. What will be the acceleration of the magnet during its fall?
A). Equal to g
B). Greater than g
C). Less than g
D). zero
Answer: Less than g
378). What is the number of neutral points for a bar magnet with its north pole pointing geographical north?
A). Zero
B). One
C). Two
D). Infinite
Answer: Two
379). The specific gravity of a substance is measured by a hydrometer at the sea level. If the measurement is done at the top of a mountain, what would be the specific gravity?
A). Zero
B). More than that measured at the sea level
C). Less than that measured at the sea level
D). Same as that measured at the sea level
Answer: Same as that measured at the sea level
380). Nuclear fusion. reaction require very high temperatures so as to overcome
A). Van der Waal's forces
B). Nuclear forces
C). Gravitational forces
D). Coulomb forces
Answer: Coulomb forces
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