Class VIII

Which of the following instruments is used to measure pressure of gases?
  1. Barometer
  2. Manometer
  3. Ammeter
  4. None of these
What does Angstrom measure?
  1. Quantity of liquid
  2. Length of light waves
  3. Length of cables
  4. Speed of ships
Centigrade & Fahrenheit scales give same reading at
  1. 400o
  2. 32o
  3. 273o
  4. 100o
The unit of current is
  1. Ohm
  2. Watt
  3. Ampere
  4. None of these
The intensity of an earthquake is measured with a
  1. Barometer
  2. Hydrometer
  3. Polygraph
  4. Seismograph
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