Chemistry MCQs with answers Page - 133

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Q. The enzymes popularly used in organic synthesis are

  • (A) microbial
  • (B) plant derived
  • (C) animal derived
  • (D) synthetic

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Q. Impure sodium carbonate obtained in the industrial process is called

  • (A) washing soda
  • (B) lime
  • (C) black ash
  • (D) baking soda

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Q. A medicinally useful compound obtained from the oil of peppermints is

  • (A) piperine
  • (B) menthol
  • (C) thymol
  • (D) morphine

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Q. Consider the following groups of compounds
I. Proteins
II. Interferons
III. Carbohydrates
Out of the above compounds, the classes of compounds that contain peptide linkages are

  • (A) I and II
  • (B) I and III
  • (C) II and III
  • (D) All of them

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Q. Chemically, white sprit is

  • (A) purified ethanol
  • (B) absolute ethyl alcohol
  • (C) denatured alcohol
  • (D) a mixture of petroleum hydrocarbons

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Q. The enzymes can be isolated from the following natural sources
I. Animals
II. Plants
III. Bacteria
IV. Fungi
For biotechnological operations, enzymes are obtained from

  • (A) I and II
  • (B) II and III
  • (C) II and IV
  • (D) III and IV

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Q. Which element in the periodic table forms maximum number of compounds ?

  • (A) H
  • (B) O
  • (C) S
  • (D) C

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Q. Mendeleev could not assign a correct position to which of the following elements in his table ?

  • (A) Lithium
  • (B) Potassium
  • (C) Hydrogen
  • (D) Helium

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Q. A mixture of sand and salt can be separated by ?

  • (A) Sublimation
  • (B) Sieving
  • (C) Dissolving salt in water and then filtration
  • (D) Dissolving salt in water and then distillation

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