Important Scientific (96) MCQs with Answers

Who invented the telescope?

• A.Galileo Galilei
• B.Johannes Kepler
• C.Hans Lippershey
• D.Isaac Newton

A laboratory instrument called is used to examine objects that are too small to be seen by the naked eye.

• A.Telescope
• B.Microscope
• C.Spectroscope
• D.Stethoscope

Which of the following is measured by an Odometer?

• A.Speed
• B.Temperature
• C.Pressure
• D.Distance

The type and relative amount of each isotope in an element can be found by ?

• A.Mass Spectrometry
• B.Chromatography
• C.X-ray Diffraction
• D.Electrophoresis

Identify the instrument used to see small organisms, which we cannot see with naked eyes?

• A.Telescope
• B.Microscope
• C.Periscope
• D.Stethoscope

What does a pyrometer measure?

• A.Wind speed
• B.Atmospheric pressure
• C.Humidity levels
• D.High temperatures

A spirit level is an instrument designed to check whether a surface is horizontal or not. Which of the following creates the bubble inside a spirit level?

• A.A gap left in the liquid
• B.Dissolved air released from the liquid
• C.A chemical reaction producing gas
• D.External air pumped into the tube

How does high-performance liquid chromatography (HPLC) separate components in a mixture?

• A.By partitioning between a stationary phase and a mobile phase
• B.By boiling the mixture and condensing vapors
• C.By passing the mixture through an electric field
• D.By centrifuging the mixture at high speed

Quantitative observation is the use of _?

• A.Senses
• B.Equipment
• C.Hypothesis
• D.Theory

Which of the following instruments is used to record sound?

• A.Phonograph
• B.Stethoscope
• C.Microscope
• D.Barometer