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  • Question
  • The gas used for artificial ripening of green fruit is


  • Options
  • A. ethylene
  • B. ethane
  • C. carbon dioxide
  • D. acetylene

  • Correct Answer
  • ethylene 


  • Chemistry problems


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    • 1. The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

    • Options
    • A. liquation
    • B. leaching
    • C. levigation
    • D. magnetic separation
    • Discuss
    • 2. The monomer of polythene is

    • Options
    • A. vinyl chloride
    • B. ethylene
    • C. ethyl alcohol
    • D. None of the above
    • Discuss
    • 3. The ionic radii of N3-, O2-, F- and Na+ follows the order

    • Options
    • A. N3- > O2- > F- > Na+
    • B. N3- > Na+ > O2- > F-
    • C. Na+ > O2- > N3- > F-
    • D. O2- > F- > Na+ > N3-
    • Discuss
    • 4. The National Chemical Laboratory is situated in

    • Options
    • A. New Delhi
    • B. Bangalore
    • C. Pune
    • D. Patna
    • Discuss
    • 5. The mass of one Avogadro number of helium atom is

    • Options
    • A. 1.00 gram
    • B. 4.00 gram
    • C. 8.00 gram
    • D. 4 x 6.02 x 1023 gram
    • Discuss
    • 6. The most electropositive elements among the following is

    • Options
    • A. Na
    • B. Ca
    • C. K
    • D. Cs
    • Discuss
    • 7. The inexpensive and commonly used variety of glass is called soda glass. It is called so because

    • Options
    • A. was used initially for making bottles of soda(carbonated drink)
    • B. is made using soda(sodium carbonate)
    • C. was initially used for storing sodium carbonate
    • D. is made using soda lime
    • Discuss
    • 8. The inert gases are ____ in water

    • Options
    • A. sparingly soluble
    • B. insoluble
    • C. soluble
    • D. None of these
    • Discuss
    • 9. The number of moles of solute present in 1 kg of a solvent is called its

    • Options
    • A. molality
    • B. molarity
    • C. normality
    • D. formality
    • Discuss
    • 10. The oil used in the froth floatation process is

    • Options
    • A. coconut oil
    • B. olive oil
    • C. kerosene oil
    • D. pine oil
    • Discuss


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