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General Knowledge :: Chemistry

  1. The metal ion present in Vitamin B12 is

  2. A.

     Nickel

    B.

     Cobalt

    C.

     Iron

    D.

     Zinc


  3. The metal present in vitamin B12 is

  4. A.

     Fe

    B.

     Co

    C.

     Mg

    D.

     Mo


  5. Which of the following is not present in RNA

  6. A.

     Thymine

    B.

     Uracil

    C.

     Ribose

    D.

     Phosphate


  7. The enzyme that converts glucose to ethyl alcohol is :

  8. A.

     Invertase

    B.

     Maltase

    C.

     Zymase

    D.

     Diastase


  9. The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is:

  10. A.

     Amino phenyl alanine

    B.

     Hydroxy phenyl alanine

    C.

     Phenyl alanine

    D.

     Dihydroxy phenyl alanine


  11. During fermentation of sugar, the compound which is always formed is :

  12. A.

     Methyl Alcohol

    B.

     Ethyl Alcohol

    C.

     Acetic Acid

    D.

     Ethylene


  13. If a buffer solution is diluted its pH

  14. A.

     Is increased

    B.

     Remains same

    C.

     Is decreased

    D.

     Will slowly increase and then it will decrease


  15. 'Vinegar' is a commercial name of

  16. A.

     Oxalic acid

    B.

     Hydrochloric acid

    C.

     Acetic acid

    D.

     Citric acid


  17. The apparatus used to test acidity of aqueous solution is

  18. A.

     PH meter

    B.

     Ammeter

    C.

     Hygrometer

    D.

     Acidmeter


  19. Which one of the following organic compound is used to remove stains of iron compounds?

  20. A.

     Oxalic acid

    B.

     Benzoic acid

    C.

     Phthalic acid

    D.

     Cinnamic acid