Class IX

The reaction which converts sugar solution into alcohol is an example of
  1. saponification
  2. hydrogenation
  3. fermentation
  4. hydrolysis
What is true of a balanced chemical equation?
  1. There are always more products than reactants.
  2. The number of moles of products equals the number of moles of reactants.
  3. Both sides of the reaction have the same number and types of atoms.
  4. Energy is always released.
What do you get when you mix an acid and a base?
  1. an amino acid
  2. a soap
  3. a salt
  4. a sugar
Measurable or numerical information is called:
  1. qualitative data
  2. quantitative data
  3. a variable
  4. a hypothesis
Which of these elements is a noble gas?
  1. krypton
  2. oxygen
  3. hydrogen
  4. hydrogen
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