Multi Option Question Page 455

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You Are On Multi Choice Question Bank SET 455

22751. Molten sodium (as a coolant in fast breeder reactor)

22752. Final product of uranium extraction plant at Jadugoda (Bihar) is

22753. Which one is the radioactive isotope of hydrogen ?

22754. A homogeneous reactor is the one, in which the

22755. Hydrogen has __________ isotopes.

22756. MeV is the unit of

22757. Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around __________ m/sec.

22758. Energy equivlant to one atomic mass unit (amu) is __________ MeV.

22759. "Critical mass" is the minimum mass of nuclear fissile material required for the

22760. The type of pump used for the recirculation of molten sodium coolant in liquid metal cooled reactor is a/an __________ pump.

22761. Fast breeder Test Reactor (FBTR) is located at

22762. Tarapur atomic power station

22763. In a nuclear explosion, the energy is released primarily in the form of __________ energy-

22764. The largest stable nucleus is

22765. Hydrogen bomb employs the nuclear fusion of

22766. Sodium melts (at atmospheric pressure) at a temperature of __________ °C.

22767. The ratio of volume of an atom to that of its nucleus is

22768. Research reactors are normally meant for

22769. Out of the followingplaces, a nuclear power plant is not located at

22770. Heavy water plant is not located at

22771. Which is not a fissile nuclear material ?

22772. Nuclear fuel usually used in a Boiling Water Reactor (BWR) is

22773. The new nucleus formed after β-decay of a radioactive element has

22774. Energy produced in the nuclear fission is of the order of __________ MeV.

22775. Pressure in a Pressurised Water Reactor (PWR) is used for

22776. The sodium vapor lamp operates in best efficiency at

22777. Water is a better coolant than a gas (like CO2, He, N2 etc.), because it

22778. Net efficiency of ordinary light water cooled nuclear reactor is about __________ percent.

22779. The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is

22780. Which of the following isotopes is not present in natural uranium ?

22781. Which of the following is present in Bhabha Atomic Research Centre (BARC) complex, Trombay (Bombay) ?

22782. Quantity of fissionable material (i.e. U-235) in natural uranium is __________ percent.

22783. Large value of air gap in an induction motor results in

22784. __________ gas is normally not used as a coolant in a nuclear reactor, because of its high neutron capture cross-section.

22785. Uranium Corporation of India Limited (UCIL) engaged in the mining & concentration of uranium ore is located at

22786. 'Heavy water' is termed as 'heavy' because it is

22787. A pressurised water reactor (PWR) uses pressurised water as a

22788. The phenomenon of radioactivity was discovered by

22789. Out of the following places, heavy water plant is not located at

22790. Isotopes of an element have the same

22791. Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage.

22792. The atomic mass of an element is fractional, because

22793. A heterogeneous reactor is the one, in which the moderator and the

22794. Radioactivity of an isotope is expressed in

22795. Extraction of uranium from its ore is done by __________ method.

22796. 75% of a radioactive element decays in 6 hours. Its half life period is __________ hours.

22797. Nuclear power plant is not located at

22798. Heavy water is used as a moderator in a

22799. Which of the following is a fuel for a fusion reactor (thermonuclear reactor) ?

22800. Positron is a/an

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