Class XI

In tritium, number of neutrons is
  1. 2
  2. 3
  3. 4
  4. 1
In order to test presence of carbonates (CO3-2)
  1. dilute HNO3 shall be added
  2. dilute HCl shall be added
  3. dilute NaOH shall be added
  4. dilute nitric acid is added accompanied by aluminum foil
In exothermic reactions, final energy content of products
  1. Is lower than energy contents of reactants
  2. Is higher than energy contents of reactants
  3. Does not depend upon energy content of reactants
  4. Forms highly stable compounds
 Hydrochloric Acid (HCl) and Silver Nitrate (AgNO3) react to form
  1. AgCl + HNO3
  2. HNO3 + Ag(Aq)
  3. Ag (s) + H2O + N2
 When an alkali is added to acid, water formation is also called as
  1. polymerization
  2. neutralization
  3. formation of hydroxonium ions
  4. reversible reactions
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