The time required for half of the __________ of a radioactive isotope to decay is called its half life.
__________ have the same mass number, but different nuclear charge.
Pick out the wrong statement.
The disintegration rate of a radioactive element
U-content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about __________ percent.
Bhabha Atomic Research Centre (BARC) located at Trombay (near Bombay) has
The electric power generation cost in nuclear power plant is less than that in a coal based thermal power plant, mainly because the
Heavy water used in the nuclear reactors to slow down the speed of neutrons is
Function of control rod in a nuclear reactor is to control
The ratio of neutrons to protons of an element having a mass number and atomic number ofandrespectively is
Heavy water (D2O) in a nuclear reactor serves as a
A fast breeder reactor employs
Which of the following types of nuclear reactors is most prone to radioactive hazards ?
Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235.
Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher
A fertile material is the one, which can be
Pick out the wrong statement.
If 4 gm of a radioisotope has a half life period ofdays, the half life of 2 gm of the same istotope will be __________ days.
The 92U238 emits an a-particle. The product is
Graphite is used in nuclear reactor as
Which of the following ores contains maximum percentage of uranium ?
The ratio of atomic radius to its nuclear radius is about
Which one is different for the neutral atoms of the isotopes of an element ?
Which one is radioactive in nature ?
The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?
Nuclear fuel complex, Hyderabad is engaged in the job of
Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-(i.e. fissile material).
Thorium metal
__________ nuclear reactor does not require a heat exchanger to supply steam to power turbine.
Uranium ore is currently mined & concentrated at