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Science Quiz | General Knowledge Multiple Choice Questions and Answers | Page-19

91 A NOT gate can be implemented by
A a single transistor
B a single resistor
C a single diode
D two diode

Answer: Option [A]
92 The term reactor referred to in wastewater treatment is
A Clarifier
B Aeration tank
C Vassel
D Setting tank

Answer: Option [B]


93 The earth is a
A non-absorber of heat
B good reflector of heat
C bad absorber and bad radiator of heat
D good absorber and good radiator of heat

Answer: Option [C]
94 Which of the following radiations has the least wavelenght
A g-ray
B X-ray
C a-ray
D b-ray

Answer: Option [A]
95 A light year is a unit of
A distance
B speed of light
C intensity of light
D none of the above

Answer: Option [A]

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