Important Scientific (96) MCQs with Answers

Why is it important to calibrate analytical instruments regularly?

• A.To change the instrument's color
• B.To increase the instrument's weight
• C.To reduce electricity consumption
• D.To ensure accurate measurements

is the process of measuring the loss of intensity of transmitted light due to the scattering effect of particles suspended in it.

• A.Turbidimetry
• B.Refractometry
• C.Polarimetry
• D.Spectrophotometry

Past Paper MCQ

Which instrument is used to measure water humidity?

• A.Thermometer
• B.Hydrometer
• C.Barometer
• D.Hygrometer

Which of the following is a common application of atomic fluorescence spectroscopy (AFS)?

• A.Studying earthquake waves
• B.Measuring blood pressure
• C.Determining the age of fossils
• D.Quantitative analysis of metal ions

What does Angstrom measure?

• A.Atmospheric pressure
• B.Intensity of sound
• C.Length of light waves
• D.Electric current

The Gas is mobile phase in ?

• A.Gas chromatography
• B.Liquid chromatography
• C.Paper chromatography
• D.Column chromatography

Rivet is used to fasten _?

• A.Hard material with hard material
• B.Soft material with soft material
• C.Hard material with soft material
• D.None of these

Carbon dating is used for _?

• A.Finding the age
• B.Measuring temperature
• C.Detecting carbon monoxide
• D.Purifying water

Chromatography involves distribution of solution between?

• A.A stationary phase and mobile phase
• B.Two stationary phases
• C.Two mobile phases
• D.A solid phase and liquid phase only

The microscope is used to study _?

• A.Distant celestial objects
• B.Small and near objects
• C.Internal body organs
• D.Sound waves