TNPSC Group 2 General Science Study Material in English Pdf - 1
Question: 1
The electrolyte in a car battery is
(A) Nitric acid
(B) Distilled water
(C) Sulphuric acid
(D) Hydrochloric acid
Ans: C
Sulphuric acid
Question: 2
The frequency band used for radar relay-systems and television is
(A) UHF
(B) VLF
(C) VHF
(D) EHF
Ans: A
UHF
Question: 3
A diode as a rectifier converts
(A) High voltage into low voltage and vice-versa
(B) Varying DC into constant dc
(C) DC to AC
(D) AC to DC
Ans: D
AC to DC
Question: 4
Resistivity of semiconductor depends
(A) Atomic nature of semiconductor
(B) Shape and atomic nature of semiconductor
(C) Shape of semiconductor
(D) Length of semiconductor
Ans: A
Atomic nature of semiconductor
Question: 5
A transistor is made of
(A) Intrinsic semiconductors
(B) Doped semiconductors
(C) A metal piece sandwiched between two intrinsic semiconductors
(D) None of the above
Ans: B
Doped semiconductors
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