Multiple Choice Questions

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Paraffin wax is

  • ester

  • acid

  • monohydric alcohol

  • cholesterol


A.

ester

Waxes are esters formed between a long chain alcohol and saturated fatty acids. It is pliable and soft when warm but hard and water resistant when cold.

Steroids are complex compounds commonly found in cell membrane and animal hormone. Eg, Cholesterol, it reinforces the structure of cell membrane in animal cells.


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Which of the following is the simplest amino acid?

  • Tyrosine

  • Asparagine

  • Glycine

  • Alanine


Which one is component of Ornithine cycle?

  • Ornithine, citrulline and alanine

  • Ornithine, citrulline and arginine

  • Amino acid are not used

  • Ornithine, citrulline and fumaric acid


Which vitamin should not be stored?

  • Calciferol

  • Retinol

  • Niacin

  • Ascorbic acid


Which one is component of Ornithine cycle?

  • Ornithine, citrulline and alanine

  • Ornithine, citrulline and arginine

  • Amino acids are not used

  • Ornithine, citrulline and fumaric acid


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Which compound has a very important role in prebiotic evolution?

  • Sulphur dioxide

  • Nitric oxide

  • Methane

  • Sulphur trioxide


Which one is the sweetest suagr?

  • Glucose

  • Fructose

  • Sucrose

  • Maltose


Nucleotide are building blocks of nucleic acids, nucleotide is a composite molecule formed by

  • (base-sugar-phosphate)n

  • base-sugar-OH

  • base-sugar-phosphate

  • sugar-phosphate


Protein present in silk fibre is

  • caesin

  • keratin

  • elastin

  • fibroin


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Which of the following vitamins is water soluble as well as an antioxidant?

  • Vitamin- B1

  • Vitamin-A

  • Vitamin-D

  • Vitamin-C


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