Class VIII

Centigrade & Fahrenheit scales give same reading at
  1. 400o
  2. 32o
  3. 273o
  4. 100o
Which instrument is used to measure pressure?
  1. Saccharimeter
  2. Ammeter
  3. Manometer
  4. Lactometer
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
What does Angstrom measure?
  1. Quantity of liquid
  2. Length of light waves
  3. Length of cables
  4. Speed of ships
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