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  • Question
  • Silver Mirror test is given by which one of the following compounds? 1. Benzophenone 2. Acetaldehyde 3. Acetone 4. Formaldehyde


  • Options
  • A. Only 1
  • B. Only 2
  • C. 1 and 3
  • D. 2 and 4

  • Correct Answer
  • 2 and 4 

    Explanation

    Both Formaldehyde and Acetaldehyde will give this test

      H C H O ? [ A g ( N H 3 ) 2 + ]         S i l v e r   m i r r o r A g   +   O r g a n i c   c o m p o u n d

      C H 3 - C H O   ? [ A g ( N H 3 ) 2 + ]   A g S i l v e r   m i r r o r +   O r g a n i c   c o m p o u n d  

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    Chemistry problems


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    • 1. Which one of the following is a natural colloid ?

    • Options
    • A. Cane sugar solution
    • B. Blood
    • C. Sodium chloride solution
    • D. Urea solution
    • Discuss
    • 2. Which one among the following is the heaviest

    • Options
    • A. 1 mole of water molecules
    • B. 1 mole of ammonia molecules
    • C. 1 mole of sodium atoms
    • D. 1 mole of hydrogen molecules
    • Discuss
    • 3. Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to

    • Options
    • A. dehydration
    • B. oxidation
    • C. reduction
    • D. dehydrogenation
    • Discuss
    • 4. An element which is preserved under water is

    • Options
    • A. sodium
    • B. sulphur
    • C. red phosphorus
    • D. white phosphorus
    • Discuss
    • 5. The credit for the discovery of transuranic element goes to

    • Options
    • A. Hahn
    • B. Rutherford
    • C. Seaborg
    • D. Curie
    • Discuss
    • 6. What is the oxidation number of sulfur in H2S?

    • Options
    • A. 2
    • B. -2
    • C. 1
    • D. -1
    • Discuss
    • 7. Cutting and peeling of onion brings tears to the eyes because of the presence of _____ ?

    • Options
    • A. Amino acid
    • B. Sulfur
    • C. Carbon
    • D. Fat
    • Discuss
    • 8. Is C2 Paramagnetic or Diamagnetic?

    • Options
    • A. Paramagnetic
    • B. Diamagnetic
    • C. Ferromagnetic
    • D. Can't be determined
    • Discuss
    • 9. Permanent hardness of water is due to the presence of ?

    • Options
    • A. Calcium sulphate
    • B. Calcium bicarbonate
    • C. Sodium bicarbonate
    • D. Magnesium bicarbonate
    • Discuss
    • 10. Species containing same number of electrons are called

    • Options
    • A. Isotopes
    • B. Isobars
    • C. Isoelectronic
    • D. Isotones
    • Discuss


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