JEE Questions for Chemistry Nuclear Chemistry Quiz 8 - MCQExams.com


Chemistry-Nuclear Chemistry-5761.png
  • nuclear fusion
  • nuclear fission
  • chemical reaction
  • transmutation

Chemistry-Nuclear Chemistry-5762.png

  • Chemistry-Nuclear Chemistry-5763.png
  • 2)
    Chemistry-Nuclear Chemistry-5764.png

  • Chemistry-Nuclear Chemistry-5765.png

  • Chemistry-Nuclear Chemistry-5766.png
Consider the following nuclear reactions
Chemistry-Nuclear Chemistry-5768.png
  • 142
  • 144
  • 140
  • 146
In which of the following nuclear reaction neutrons is emitted ?

  • Chemistry-Nuclear Chemistry-5770.png
  • 2)
    Chemistry-Nuclear Chemistry-5771.png

  • Chemistry-Nuclear Chemistry-5772.png

  • Chemistry-Nuclear Chemistry-5773.png
Match Column I and Column II and select the correct answer using the code given below the lists,
Chemistry-Nuclear Chemistry-5775.png
  • A = 2, B = 1, C = 3, D = 5
  • A = 2, B = 3, C = 1, D = 5
  • A = 5, B = 2, C = 1, D = 3
  • A = 3, B = 4, C = 1 , D = 2
  • A = 4, B = 3, C = 2, D = 1
The age of a specimen t is related to the daughter/parent ratio of number of atoms (D/P) by the equation ( λ = decay constant)

  • Chemistry-Nuclear Chemistry-5776.png
  • 2)
    Chemistry-Nuclear Chemistry-5777.png

  • Chemistry-Nuclear Chemistry-5778.png

  • Chemistry-Nuclear Chemistry-5779.png

  • Chemistry-Nuclear Chemistry-5780.png

Chemistry-Nuclear Chemistry-5782.png

  • Chemistry-Nuclear Chemistry-5783.png
  • 2)
    Chemistry-Nuclear Chemistry-5784.png

  • Chemistry-Nuclear Chemistry-5785.png

  • Chemistry-Nuclear Chemistry-5786.png

Chemistry-Nuclear Chemistry-5788.png
  • II A
  • IV B
  • VI B
  • VI A
which of the following isotopes occurs in nature?
  • U233
  • U230
  • U226
  • U238

Chemistry-Nuclear Chemistry-5789.png
  • β– emission
  • α– emission
  • β+ emission
  • K electron capture
The rate of disintegration of radioactive element changes from initial value of 10,000 dpm to 2,500 dpm in 50 days. The decay constant is

  • Chemistry-Nuclear Chemistry-5791.png
  • 2)
    Chemistry-Nuclear Chemistry-5792.png

  • Chemistry-Nuclear Chemistry-5793.png

  • Chemistry-Nuclear Chemistry-5794.png
If 3/4 quantity of radioactive element disintegrates in two hours, its half- life would be
  • 1 hour
  • 45 minutes
  • 30 minutes
  • 15 minutes
A radioactive isotope decays at such a rate that after 96 minutes, only 1/8 th of the original amount remains. The half-life of this nuclide in minutes is
  • 12
  • 24
  • 32
  • 48
What is the half life of a radioactive substance if 87.5 % of any given amount of the substance disintegrates in 40 minutes ?
  • 10 min
  • 20 min
  • 160 min
  • 13 min 20 sec
The half – life period of polonium is 140 days. If one starts with 1 g of polonium, 75% of it would have undergone distintegration in
  • 420 days
  • 280 days
  • 105 days
  • 35 days
The activity of a radioactive nuclide (Xis 6.023 curie at a certain time ‘t’. If its disintegration constant is 3.7 × 104 Sec−1 , the mass of X after t sec is

  • Chemistry-Nuclear Chemistry-5800.png
  • 2)
    Chemistry-Nuclear Chemistry-5801.png

  • Chemistry-Nuclear Chemistry-5802.png

  • Chemistry-Nuclear Chemistry-5803.png

Chemistry-Nuclear Chemistry-5805.png
  • 3 neutrons
  • 2 – neutrons
  • α − paticle
  • β − paticle

Chemistry-Nuclear Chemistry-5807.png

  • Chemistry-Nuclear Chemistry-5808.png
  • 2)
    Chemistry-Nuclear Chemistry-5809.png

  • Chemistry-Nuclear Chemistry-5810.png

  • Chemistry-Nuclear Chemistry-5811.png

Chemistry-Nuclear Chemistry-5813.png
  • 0.029
  • -0.029
  • 0.058
  • -0.058
Wooden artifact and a freshly cut down tree give 7.6 and 15.2 counts min-1 g-1 of carbon (t1/2 = 5760 years) respectively. The age of the artifact is
  • 5760 years
  • 2)
    Chemistry-Nuclear Chemistry-5815.png

  • Chemistry-Nuclear Chemistry-5816.png

  • Chemistry-Nuclear Chemistry-5817.png

Chemistry-Nuclear Chemistry-5819.png
  • α, β, γ
  • β, α, γ
  • γ, α, β
  • β, γ, α

Chemistry-Nuclear Chemistry-5820.png

  • Chemistry-Nuclear Chemistry-5821.png
  • 2)
    Chemistry-Nuclear Chemistry-5822.png

  • Chemistry-Nuclear Chemistry-5823.png

  • Chemistry-Nuclear Chemistry-5824.png
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