General Science Class 7

Isotopes of an element are identical in:

  1. Mass number
  2. Electron number
  3. Valency
  4. Atomic number

How many proton is present in the nucleus of Protium isotope?

  1. 3
  2. 2
  3. 1
  4. 0

How many proton and neutron are present in the nucleus of Deuterium isotope?

  1. 3 and 2
  2. 2 and 3
  3. 1 and 1
  4. 2 and 2

How many proton and neutron are present in the nucleus of Tritium isotope?

  1. 2 and 1
  2. 1 and 2
  3. 3 and 2
  4. 4 and 1

Which isotope is used for diagnosis and treatment of Wilson’s disease?

  1. Copper – 64
  2. Gallium – 67
  3. Cobalt – 60
  4. Iron – 59

Which among the following isotope is used to kill cancer cells by a particular type of treatment, known as radiotherapy?

  1. Gallium – 67
  2. Cobalt – 60
  3. Iron – 59
  4. Copper – 64

Which among the following isotope is used for detection of prolonged infection and cancer cells?

  1. Copper – 64
  2. Gallium – 67
  3. Cobalt – 60
  4. Iron – 59

Which among the following isotope is used for radiotherapy to stop the growth of cancer cells?

  1. Copper – 64
  2. Gallium – 67
  3. Cobalt – 60
  4. Iron – 59

Which among the following isotope is used for diagnosis of function of thyroid gland?

  1. Iodine – 123
  2. Copper – 64
  3. Gallium – 67
  4. Cobalt – 60

Which isotope is used to identity efficiency rates of organic and inorganic fertilizers?

  1. Phosphorus – 32
  2. Carbon – 14
  3. Lead – 210
  4. Nitrogen – 15

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