E-PolyLearning

46. Example of atom having single isotope is
a. carbon
b. calcium
c. gold
d. cadmium
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Answer: (c).gold

47. Products which are obtained in a chemical reaction is
a. production
b. No yield
c. theoretical yield
d. actual yield
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Answer: (d).actual yield

48. Isotopes of calcium are
a. seven
b. six
c. nine
d. twelve
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Answer: (b).six

49. Isotopes differ in number of
a. electrons
b. protons
c. neutrons
d. anti neutrino
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Answer: (c).neutrons

50. In ionization chamber vapors are bombarded with fast moving
a. protons
b. electrons
c. neutrons
d. antineutron
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Answer: (b).electrons