Class VIII

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
Which of the following instruments is used to measure pressure of gases?
  1. Barometer
  2. Manometer
  3. Ammeter
  4. None of these
Which instrument is used to measure pressure?
  1. Saccharimeter
  2. Ammeter
  3. Manometer
  4. Lactometer
How many Ergs are these in 1 Joule?
  1. 102
  2. 104
  3. 106
  4. 107
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