1.Which of the following is a seismometer device?
A. Crescograph
B. Seismograph
C. Geiger Counter
D. Raingauge
Seismograph is a seismometer device. Earthquake produces seismic waves which can be detected with the help of a sensitive device called Seismograph. Crescograph is a device used for measuring growth in plants. Rainguage is a device used to measure the amount of rainfall in particular area. Geiger Counter is a particle detector device that detects radioactivity or radiation.
2. Which of the following quantities is measured on the Richter scale?
A. Speed of a glacier
B. Population growth
C. Intensity of an earthquake
D. Temperature inside the earth
Intensity of earthquake is measured on Richter scale. It is the most common standard of measurement for an earthquake. It is used to rate the magnitude of an earthquake, that is the amount of energy released during an earthquake.
3. Electroencephalogram (EEG) is used in monitoring
A. heart
B. liver
C. pancreas
D. brain
E. None of the above/More than one of the above
A.
B.
C.
D.
An EEG an electronic test used to detect electrical activity of the brain using small, metal discs (electrodes) attached to the scalp. Brain cells communicate with the electrical impulses and are active all the time, even when a person is sleeping. This activity shows up wavy lines on an EEG recording.
4. 'Ringelmann Scale' is used to measure the density of the following
A. fog
B. noise
C. polluted water
D. smoke
The Ringelmann Scale is used for measuring the apparent density of smoke. It was developed by a French professor of agricultural engineering Maximilien Ringelmann, in 1888. The Ringelmann Smoke Chart fulfills an important need in smoke abatement work and in certain problems in the combustion of fuels.
5. The name of the equipment used for measuring blood pressure is
A. tacheometer
B. sphygmomanometer
C. actinometer
D. barometer
Sphygmomanometer is an instrument used for measuring blood pressure. Barometer is used to measure atmospheric pressure. Actinometer is used for measuring heating power of radiation.
6. Which instrument is used for measuring humidity in the air?
A. Hydrometer
B. Hygrometer
C. Spectrometer
D. Eudiometer
A hygrometer is a device used to measure the humidity in the air. Spectrometer is a device used to measure properties of light over a specific portion of the electromagnetic spectrum. A Eudiometer is a laboratory device which measures the change in volume of a gas mixture.
7. The density of milk is measured by
A. lactometer
B. hydrometer
C. barometer
D. hygrometer
Lactometer is a device used to measure the density of milk.
It is a type of hydrometer, especially designed for the use with dairy products.
Hydrometer is a device used to measure the specific gravity of liquids.
Barometer is used for measuring the atmospheric pressure. Hygrometer is used to measure the humidity in air.
8. Which one of the following can be used to measure temperature above 
?
A. Clinical thermometer
B. Thermoelectric couple thermometer
C. Plantinum resistance thermometer
D. Pyrometer
A pyrometer is a device which is used to measure relatively high temperature (above 
).
Pyrometer measures the temperature by measuring radiations from the object, without having to be in contact.
Clinical thermometer is used to measure the temperature of a human body ( 
to ).
Thermoelectric couple thermometer is used to measure low as well as high temperature to ).
Platinum resistance thermometer (PRT) is used to measure temperature in the range of to .
9. What is measured by manometer?
A. Air pressure
B. Pressure of gas
C. Density of liquids
D. Pressure of oil on the surface
Manometer is used to measure pressure of gas. It uses a column of liquid to measure pressure of liquids or gases, commonly referred as pressure measuring instrument.
10. Match List I with List II and select the correct answer using the codes given below.
A.
B.
C.
D.
The correct matching is A-3, B-4, C-2, D-1. An ammeter is a device used to measure the electric current in a circuit. A hygrometer is an instrument used for measuring the moisture content, which is known as humidity in the atmosphere. A spring balance is a weighing apparatus which is used to measure different weights by the tension of a spring. A barometer is a device used to measure atomospheric pressure.
11. Pyrometer is used to measure
A. air pressure
B. humidity
C. high temperature
D. density
A pyrometer is used to measure relatively high temperature. It is a type of remote-sensing radiation thermometer. It is based on
Stefan-Boltzmann law, which describes that the total radiation emitted by a black body is proportional to the fourth power of its absolute temperature ( 
).
12. Which of the following is measured by anemometer?
A. Velocity of water-flow
B. Depth of water
C. Force of the wind
D. Intensity of light
Anemometer is an instrument used to measure wind speed and force of the wind.
13. The device to measure electric current is
A. voltmeter
B. ammeter
C. voltameter
D. potentiometer
E. None of the above/More than one of the above
A.
B.
C.
D.
The device used to measure electric current is ammeter.
Voltmeter is used to measure potential difference. Potentiometer is used to measure emf of a cell. Voltameter is used for measuring electric charge.
14. The apparatus used to measure intensity of sound is
A. chronometer
B. anemometer
C. audiophone
D. audiometer
An Audiometer is used to measure the intensity of sound, while Anemometer is used for measuring wind speed and wind pressure Audiometer is an electronic device that produces pairs tones which can be adjusted up and down.
15. Which of the following devices is used to record humidity?
A. Hygrometer
B. Psychrometer
C. Thermo-hygrograph
D. All of these
Hygrometer, psychrometer and thermo-hygrograph, all are used to record humidity.
A hygrometer is an instrument used in meteorological science to measure the humidity or amount of water vapour in the air.
A psychrometer is a type of hygrometer that measures the relative humidity in the atmosphere. It is different in shape than the hygrometer.
Thermo-hygrograph is a chart recorder that measures and records both temperature and humidity.
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