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General Science MCQ - Multiple Choice Question and Answer

General Science MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 57
In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If both inputs are positive the output is zero. This is

an AND circuit
an OR circuit
a high-pass filter
a NOR circuit

Question No : 58
One fathom is equal to

6 feet
6 metres
60 cms
60 feet

Question No : 59
What is the unit for measuring the pitch or frequency of sound ?

Coulomb
Hum
Cycles
Decible

Question No : 60
Apparatus invented by Archimedes is :

Pulley
Microscope
Thermemoter
Barometer