1. A NOT gate can be implemented by
Question Asked : SSC Graduate Level Tier-I Exam 2013
(A) a single diode
(B) two diodes
(C) a single resistor
(D) a single transistor
2. Radioactive elements can be traced out in living cell through a technique called
Question Asked : SSC Multi-Tasking Staff Exam 2013
(A) gamma-emission
(B) oxidation
(C) alpha-emission
(D) beta-emission
3. A radioactive substance does not undergo any change (in mass or charge) during
Question Asked : SSC Multi-Tasking Staff Exam 2013
(A) gamma-emission
(B) oxidation
(C) alpha-emission
(D) beta-emission
4. In the remote control of television, electromagnetic waves used are
Question Asked : SSC Delhi Police Sub-Inspector (SI) Exam 2012
(A) ultraviolet
(B) microwave
(C) radio wave
(D) infrared
5. In nuclear reactor, heavy water is used as
Question Asked : SSC Data Entry Operator Exam 2008
(A) coolant
(B) fuel
(C) moderator
(D) atomic smasher
6. The important unit of a microprocessor is
Question Asked : SSC Combined Matric Level (Pre) Exam 2008
(A) ALU
(B) array of registers
(C) control unit
(D) All of the above
7. The radiation initially produced in fluorescent tube is
Question Asked : SSC Combined Matric Level (Pre) Exam 2002
(A) infrared
(B) ultraviolet
(C) microwaves
(D) X-rays
8. Forged documents are detected by
Question Asked : SSC Combined Matric Level (Pre) Exam 2002
(A) ultraviolet rays
(B) infra-red rays
(C) beta rays
(D) gamma rays
9. After long periods of use, a grey spot develops on the inside of a bulb. This is because
Question Asked : SSC Combined Matric Level (Pre) Exam 2000
(A) the tungsten filament evaporates and collects there
(B) the heat of the bulb scorches the glass at the top
(C) dust inside the bulb condenses on the top
(D) glass undergoes a change due to the heat
10. The scientist who first sent electromagnetic waves to distant places is
Question Asked : SSC CISF ASI Exam 2010
(A) James Clerk Maxwell
(B) Heinrich Hertz
(C) Thomas Alya Edison
(D) John Logte Baird
