JEE Questions for Chemistry Nuclear Chemistry Quiz 5 - MCQExams.com


Chemistry-Nuclear Chemistry-5588.png
  • Positrons
  • neutrons
  • protons
  • electrons
Graphite is used in nuclear reactors
  • as a lubricant
  • as a fuel
  • for lining the inside of the reactor as an insulator
  • for reducing the velocity of neutrons
Cyclotron is not capable of accelerating
  • Neutrons
  • Protons
  • Deutrons
  • α − particle
The number of electrons in the nucleus of C – 12 is
  • 6
  • 12
  • 17
  • 0

Chemistry-Nuclear Chemistry-5590.png
  • α − emission
  • β − emission
  • positron emission
  • proton emission
Radioactive iodine is being used to diagnose the disease of
  • bones
  • kidneys
  • blood cancer
  • thyroid

Chemistry-Nuclear Chemistry-5592.png

  • Chemistry-Nuclear Chemistry-5593.png
  • 2)
    Chemistry-Nuclear Chemistry-5594.png

  • Chemistry-Nuclear Chemistry-5595.png

  • Chemistry-Nuclear Chemistry-5596.png
Which of the following is used as control rod?
  • Cadmium rod
  • Graphite rod
  • Boron
  • Both (a) and (c)
Which metal Aprons are worn by radiographer to protect him from radiation
  • Mercury Coated Apron
  • Lead Apron
  • Copper Apron
  • Aluminimised Apron
which is not emitted by radioactive substance ?
  • α − rays
  • β − rays
  • Positron
  • Proton
Positron is
  • Electron with positive charge
  • Helium nucleus
  • A nucleus with two protons
  • A nucleus with one neutron and one proton
Which of the following isotope of uranium is the most radioactive?
  • 235
  • 236
  • 237
  • 238
Thorium disintegration series is known as
  • (4n +series
  • (4n +series
  • 4n series
  • (4n +series

Chemistry-Nuclear Chemistry-5599.png
  • 6
  • 7
  • 8
  • 9

Chemistry-Nuclear Chemistry-5601.png
  • isobars
  • isotones
  • isotopes
  • isomers
β − particle is emitted in radioactivity by
  • conversion of proton to neutron
  • from outermost orbit
  • conversion of neutron to proton
  • β − particle is not emitted

Chemistry-Nuclear Chemistry-5602.png
  • 94 and 230
  • 90 and 230
  • 92 and 230
  • 92 and 234

Chemistry-Nuclear Chemistry-5604.png
  • 8, 4
  • 6, 2
  • 7, 4
  • 4, 3

Chemistry-Nuclear Chemistry-5605.png
  • 2α and 2β particles
  • 6α and 8β particles
  • 8α and 2β particles
  • 8α and 6β particles

Chemistry-Nuclear Chemistry-5606.png
  • 3α and 3β
  • 5α and 3β
  • 3α and 5β
  • 5α and 5β

Chemistry-Nuclear Chemistry-5608.png
  • 6, 6
  • 8, 6
  • 8, 6
  • 4, 6

Chemistry-Nuclear Chemistry-5610.png

  • Chemistry-Nuclear Chemistry-5611.png
  • 2)
    Chemistry-Nuclear Chemistry-5612.png

  • Chemistry-Nuclear Chemistry-5613.png

  • Chemistry-Nuclear Chemistry-5614.png
A radioactive sample has a half life of 1500 years. A sealed tube containing 1 g of the sample will contain after 3000 years
  • 1 g of the sample
  • 0.5 g of the sample
  • 0. 25 g of the sample
  • 0.0 g of the sample
A sample of wood decayed to 1/16 of its original value.What is the number of t1/2’s ?
  • 3
  • 4
  • 8
  • 16

Chemistry-Nuclear Chemistry-5618.png
  • 1 mg
  • 2 mg
  • 4 mg
  • 8 mg
The half – life a radioactive isotope is three hours.If the initial mass of the isotope were 256 g, the mass of it remaining undecayed after 18 hours would be
  • 8.0 g
  • 12.0 g
  • 16.0 g
  • 4.0 g
A sample of rock from the moon contains equal number of atoms of uranium and lead (t1/2 for U = 4.5 × 109 years). The age of the rock would be

  • Chemistry-Nuclear Chemistry-5620.png
  • 2)
    Chemistry-Nuclear Chemistry-5621.png

  • Chemistry-Nuclear Chemistry-5622.png

  • Chemistry-Nuclear Chemistry-5623.png

Chemistry-Nuclear Chemistry-5624.png
  • V
  • VI
  • IV
  • II

Chemistry-Nuclear Chemistry-5625.png
  • 14
  • 15
  • 13
  • 16

Chemistry-Nuclear Chemistry-5627.png
  • U
  • Cf
  • Cm
  • Tc
0:0:1


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