Class IX

Sucrose is broken down into glucose (C6H12O6) and fructose (C6H12O6) through enzyme
  1. salivary amylase
  2. salicylate
  3. sucrose
  4. sucral
For classification, Biology uses
  1. artificial system
  2. natural system
  3. neutral system
  4. a tracking system
Sulfur dioxide (SO2) may be reduced in air, if
  1. catalytic converters are used in cars
  2. car pools are used
  3. filters or scrubbers are used in chimneys
  4. ozone friendly products are introduced
Tissue respiration is most active in
  1. lungs
  2. muscles
  3. liver
  4. stomach
Of 100 cm³ urine, approx. nitrogenous wastes make up to
  1. 1.8 g
  2. 2.2 g
  3. 2.0 g
  4. 0.2 g
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