Class XI

 If generalized formulae of carbohydrates is CnH2mOm, n and m for glucose are
  1. N=3 and m=3 respectively
  2. N=3 and m=6 respectively
  3. N=6 and m=6 respectively
  4. N=12 and m=12 respectively
 Balanced diet for one person may be suitable for
  1. Growing children
  2. All other persons
  3. Pregnant women
  4. No other person
Cellulose (C6H10O5)n can be digested in herbivores through
  1. Fungi
  2. Amoeba
  3. Bacteria
  4. Pathological traces
 Nitrates (NO3-1) and phosphates (PO4-3) reach underground water with
  1. Acid rains
  2. Fertilizers washed away by rain water
  3. Decomposition of organic compounds by anaerobic bacteria
  4. All of these
Selective reabsorption does not allow to retain
  1. Water
  2. Nitrogenous wastes
  3. Proteins
  4. All of these
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