nuclear physics and conductivity - Category wise Question and Answer Practice Test with Solutions

Question : 26 [IAS (Pre) 1995]

Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not?

a) Scintillation counter

b) Lead plate

c) Microscope

d) Spectrophotometer

Question : 27 [UPPCS (Pre) 2015]

Which one of the following is an important component of a transistor?

a) Germanium

b) Osmium

c) Arsenic

d) Radium

Question : 28 [UPPCS (Pre) 1994]

Stars obtain their energy from

1. Nuclear fusion
2. Gravitational contraction
3. Chemical reaction
4. Nuclear fission

a) 1 and 4

b) 1, 2 and 3

c) 1 and 2

d) 2 and 4

Question : 29 [PCS (Pre) 2006]

Which of the following element is not included as a nuclear fuel?

a) Plutonium

b) Thorium

c) Cadmium

d) Uranium

Question : 30 [PCS (Pre) 2006]

The newly discovered high temperature super conductors are

a) Pure rare earth metals

b) Ceramic oxides

c) Metal alloys

d) Inorganic polymers