Class XI

The relative density of lead is 11.3. Its density in g cm−3cm−3 is
  1. 1130
  2. 1.13
  3. 113
  4. 11.3
When two quantities are added or subtracted, the absolute error in the final result is
  1. absolute value of the sum of errors of individual quantities
  2. absolute value of the sum of individual quantities
  3. the sum of the absolute errors in the individual quantities
  4. absolute value of the difference of errors of individual quantities
The units of pressure are the same as the units of
  1. stress
  2. plasticity
  3. strain
  4. elasticity
When two quantities are multiplied or divided, the relative error in the result is
  1. the difference of the absolute errors in the multipliers
  2. the sum of the absolute errors in the multipliers
  3. the difference of the relative errors in the multipliers
  4. the sum of the relative errors in the multipliers
A dimensionally consistent equation
  1. is necessarily correct
  2. is not necessarily correct
  3. is always correct
  4. is nearly correct
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