Important Scientific (125) MCQs with Answers

Laboratory Thermometer has a range of?

• A.0°C to 100°C
• B.10°C to 110°C
• C.-10°C to 100°C
• D.-20°C to 120°C

Past Paper MCQ

Electric current is measured by ?

• A.Ammeter
• B.Voltmeter
• C.Galvanometer
• D.Both A and C

Before measuring the value of unknown voltage or frequency by oscilloscope, it must be calibrated?

• A.Vertically
• B.Horizontally
• C.Both vertically and horizontally
• D.All of these

You should not do one of the following while handling a clinical thermometer?

• A.Shake it to bring the mercury level down
• B.Wash it with cold water before use
• C.Hold it by the stem while reading
• D.Run

A device used for detecting and testing the nature of charge on a body is ?

• A.Electroscope
• B.Galvanometer
• C.Manometer
• D.Hygrometer

A photoelectric transducer element converts ?

• A.Heat to mechanical energy
• B.Sound to electrical signal
• C.Light intensity to voltage
• D.Pressure to light

Least count of a screw gauge is?

• A.0.001 mm
• B.0.01 mm
• C.0.1 mm
• D.1.0 mm

What does a digital stop watch display?

• A.Time in analog format
• B.Time in decimal format
• C.Time in binary format
• D.Time in Roman numerals

The brightness of a spot on a CRO screen is controlled by ?

• A.Anodes
• B.Cathode
• C.Grid
• D.Fluorescent screen

The function of the nosepiece in a microscope is to ?

• A.Adjust the brightness of light
• B.Focus the image sharply
• C.Change the magnification of objective lenses
• D.Hold the glass slide in place