Class XI

Acid salt formed by Phosphoric acid and sodium phosphate is
  1. Sodium hydrogen phosphate NaHPO4
  2. Sodium dihydrogen phosphate NaH2PO4
  3. Sodium trihydrogen phosphate Na2H3PO4
  4. Sodium tetrachloro phosphate NaCH4Cl4
Water-soluble gases do not include
  1. Ammonia
  2. Carbon dioxide
  3. Hydrogen
  4. Oxygen
 Elevation of boiling points occur due to
  1. Presence of impurities
  2. A reduced pressure
  3. A high pressure
  4. Lower rate of evaporation
 Common covalent bonds include
  1. MgO
  2. KF
  3. LiCl
  4. CH4
 When Sodium Hydroxide (NaOH) reacts with Copper Sulfate (CuSO4), spectator ions will be
  1. Sodium and copper
  2. Copper and hydroxide
  3. Sodium and sulfate
  4. Sulfate and hydroxide
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