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Q26. Which of the following is measured on the Richter scale?
- AThe speed of the rocket 5 minutes after its lift-off
- Bintensity of thunderstorm
- Cintensity of the earthquake
- DThe speed of the ball hit by a player in lawn tennis
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Answer: C) intensity of the earthquake
Q27. The instrument used to measure the direction and speed of clouds is called-
- AAnemometer
- BRain Gauge
- Cnephoscope
- DHygrometer
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Answer: C) nephoscope
Q28. The instrument used to measure relative humidity in air is-
- AHygrograph
- BHydrograph
- Cpantograph
- DBarograph
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Answer: A) Hygrograph
Q29. What does a seismograph record?
- Aheartbeat
- Batmospheric pressure
- Cintensity of the earthquake
- Dnone of these
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Answer: C) intensity of the earthquake