Science Quiz | General Knowledge Multiple Choice Questions and Answers | Page-14

66 A body absorbs heat most if it is
A black and smooth
B black and rough
C white and black
D white and rough

Answer: Option [B]
67 The slope of a velocity-time graph represents
A distance
B acceleration
C speed
D All of the above

Answer: Option [B]
68 A rear-view mirror for driving is
A convex
B concave
C inverted
D None of the above

Answer: Option [A]
69 The audio signals of TV are
A unmodulated
B velocity modulated
C Amlitude modulated
D frequency modulated

Answer: Option [D]
70 Red is used as an emergency or danger signal as
A it is scattered
B it has very high energy
C its wavelength is the longest
D None of the above

Answer: Option [C]


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