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All enzymes are made of

A. Fats

B. Carbohydrates

C. Proteins

D. Amino acids

Correct Answer : C.


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  1. Commonly used glass is known as the __________ glass.
  2. At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional…
  3. Wet chlorine gas produced during electrolysis of brine is dehydrated by
  4. Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst…
  5. __________ Nature of hypo (sodium thiosulphate) makes it useful in photography.
  6. Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
  7. Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm…
  8. Salt cake is chemically represented by
  9. Salt is added in the kettle during soap manufacture to separate
  10. Concentration of NaOH solution produced by diaphragm electrolytic cell is about __________ percent.
  11. Air used in aerobic fermentation must be sterilized, otherwise the
  12. SO2 is bubbled through hot sugar cane juice to
  13. In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because
  14. Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
  15. Ethanol amine is produced using ammonia and
  16. Poly Vinyl Chloride (P.V.C.) is a __________ material.
  17. Sulphuric acid is mainly used in the __________ industry.
  18. The difference between saponification value and acid value is
  19. Pick out the wrong statement.
  20. Naphthalene is removed from coke oven gas by
  21. Styrene is produced from ethyl benzene by the process of
  22. Fluorescent dyes are added in detergents to
  23. Thermosetting materials
  24. Pig iron is produced by blast furnaces in India using mostly the iron ore named
  25. __________ is produced using Polycondensation reaction.
  26. For the hydrogenation of oils, __________ (i) __________ is commonly used as catalyst and __________…
  27. Reaction of an alcohol with organic acid is called the __________ reaction.
  28. Widely used method for the conditioning of boiler feed water is the
  29. Unsaturated oils compared to saturated oils have
  30. Main use of hydrazine is