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Standard XII
Biology
Question

Control experiment is

  1. Experiment under fully controlled conditions.
  2. Experiment in which all parameters arc recorded.
  3. Experiment with optium material under test.
  4. Experiment without material under test.

A
Experiment in which all parameters arc recorded.
B
Experiment with optium material under test.
C
Experiment under fully controlled conditions.
D
Experiment without material under test.
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Solution
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A control experiment is an experiment in which an observer test a hypothesis by looking for changes brought on by alterations to a variable.
So the correct option is 'Experiment without material under test'.

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