The full form of STM is _?

A. Scanning Tunneling Microscope

B. Scanning Transmission Microscope

C. Surface Tunneling Microscope

A Spectroscope is used to _?

D. Identify the chemical elements present in a star

A. Measure the brightness of a star

B. Measure the temperature of a star

C. Determine the distance of a star from Earth

D. Identify the chemical elements present in a star

Everyday Science · Introduction to Everyday Science · page 4 of 13

Important Scientific (96) MCQs with Answers

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Important Scientific Instruments MCQs (31–40)

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Past paper MCQs in this chapter · See all past papers

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31.
Past Paper MCQ
Who discovered the microscope?
Correct Answer: B. Zacharias Janssen
One-liner
The microscope was discovered by Zacharias Janssen, a Dutch spectacle maker, around 1590.
32.
Past Paper MCQ
Thermometer was invented by _?
Correct Answer: D. Daniel Gabriel Fahrenheit
One-liner
The thermometer was invented by Daniel Gabriel Fahrenheit, who also developed the Fahrenheit temperature scale.
33.
Past Paper MCQ
Who invented chromatography?
Correct Answer: D. Mikhail Semenovich Tsvet
One-liner
Chromatography was invented by Mikhail Semenovich Tsvet, a Russian-Italian botanist.
34.
The source of electromagnetic radiation which is used in the instrument atomic absorption spectrophotometer is _?
Correct Answer: B. Hollow cathode lamp
One-liner
The source of electromagnetic radiation used in an atomic absorption spectrophotometer is the Hollow cathode lamp.
35.
Hygrometer is used for measuring the ?
Correct Answer: A. Humidity of air
One-liner
A hygrometer is used for measuring the humidity of air.
36.
Fathometer is used to measure ?
Correct Answer: B. Ocean Depth
One-liner
A fathometer is an instrument used to measure ocean depth by using sound waves.
37.
The full form of STM is _?
Correct Answer: A. Scanning Tunneling Microscope
One-liner
The full form of STM is Scanning Tunneling Microscope.
38.
Past Paper MCQ
Which instrument is used to measure temperature?
Correct Answer: B. Thermometer
One-liner
A thermometer is the instrument used to measure temperature.
39.
A Spectroscope is used to _?
Correct Answer: D. Identify the chemical elements present in a star
One-liner
A spectroscope is used to identify the chemical elements present in a star by analyzing the spectrum of light it emits.
40.
Velocity is measured by _?
Correct Answer: D. Speedometer
One-liner
Velocity is measured by a Speedometer.

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Important Scientific (96) MCQs with Answers

Important Scientific Instruments MCQs (31–40)

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