Class IX

Secretion of urea in sweat makes skin a
  1. respiratory organ
  2. breathing organ
  3. excretory organ
  4. egestion organ
Toxication may results from large consumptions of
  1. proteins
  2. carbohydrates
  3. fats
  4. vitamins
Over-breathing is a symptom of
  1. too less oxygen
  2. too much oxygen
  3. too much carbon dioxide
  4. too much carbon monoxide
Condensation reaction always results in formation of complex sugar (disaccharide or polysaccharide) and
  1. amino acids
  2. amino acids
  3. water
  4. maltose
Opium, morphine and heroin are examples of
  1. opiates
  2. cocaine
  3. depressant drugs
  4. cannabis
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