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  • Question
  • The discovery of neutron became very late because


  • Options
  • A. it is present in nucleus
  • B. it is a fundamental particle
  • C. it does not move
  • D. it does not carry any charge

  • Correct Answer
  • it does not carry any charge 


  • Chemistry problems


    Search Results


    • 1. SI unit of equivalent conductance

    • Options
    • A. ohm/cm
    • B. Siemens m2/equivalent
    • C. Siemens/equivalent
    • D. mho/cm
    • Discuss
    • 2. A mixture of sand and naphthalene can be separated by

    • Options
    • A. Fractional distillation
    • B. Sublimation
    • C. Chromatography
    • D. Any of them
    • Discuss
    • 3. Which one is the pure element

    • Options
    • A. glass
    • B. cement
    • C. sodium
    • D. None of these
    • Discuss
    • 4. The isotopes of chlorine with mass number 35 and 37 exist in the ratio of

    • Options
    • A. 1:2
    • B. 2:3
    • C. 3:1
    • D. 3:4
    • Discuss
    • 5. A radioactive substance has a half life of four months, three-fourth of the substance would decay in

    • Options
    • A. 3 months
    • B. 4 months
    • C. 8 months
    • D. 12 months
    • Discuss
    • 6. Which one of the following mixture is homogeneous

    • Options
    • A. starch and sugar
    • B. methanol and water
    • C. graphite and charcoal
    • D. calcium carbonate and calcium bicarbonate
    • Discuss
    • 7. Which one of the following substances does not have a melting point

    • Options
    • A. bromine
    • B. sodium chloride
    • C. mercury
    • D. glass
    • Discuss
    • 8. Sodium carbonate crystal lose water molecules this property is called

    • Options
    • A. hygroscopy
    • B. deliquescence
    • C. efflorescence
    • D. None of these
    • Discuss
    • 9. The absolute value of charge on electron was determined by

    • Options
    • A. J.J.Thomson
    • B. R.A. Millikan
    • C. Rutherford
    • D. Chadwick
    • Discuss
    • 10. Which one of the following elements is essential for construction is nuclear reactors

    • Options
    • A. Cobalt
    • B. Nickel
    • C. Zirconium
    • D. Tungsten
    • Discuss


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