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1.

The efficiency of a nuclear power plant in comparison to a conventional thermal power plant is                        
A. same B. more
C. less D. may be less or mote depending on size



2.

Isotopes of same elements have                        
A. same atomic number and different masses B. same chemical properties but different atomic numbers
C. different masses and different atomic numbers D. different chemical properties and same atomic numbers



3.

Atomic number of an element in the periodic table represents the numbers of                        
A. protons in the nucleus B. electrons in me nucleus
C. neutrons in the nucleus D. electrons in the atom




4.

The mass number of a substance represents the sum of total number of                        
A. protons and neutrons in an atom B. protons and electrons in an atom
C. neutrons and electrons in an atom D. protons and neutrons in a nucleus



5.

Which is not identical for an atom and an isotope                        
A. mass number B. atomic number
C. chemical properties D. position in periodic table



6.

Amongst the following, the fissionable materials are                        
A. U233andPu239 B. U23iandPu233
C. U235andPu235 D. U238andPu239



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