Class 8 quiz

The SI unit of acceleration is

• Metre per second

• Newton

• Metre per second square

• None of the options

The line connecting the pole of a mirror, and the cente of curvature and focus is

• Focal length

• Principal axis

• Radius of curvature

• Normal

Nichrome is a

• Metal

• Alloy

• Non metal

• Safety device

The valency of chlorine is

• 1

• 2

• 3

• 4

The molecular formula of hydrochloric acid is

• HCl

• HNO3

• 2HCl

• H2SO4

Virology is a study of

• Fungus

• Bacteria

• Virus

• All

WBC is

• Red in colour

• Yellow in colour

• Blue in colour

• Colourless

Which one is longer?

• Synodic month

• Sidereal month

• Bright half

• Dark half

During crescent the moon is seen

• Sickle shaped

• Hemisphere

• Oval shaped

• Spherical

Acid is

• Bitter in taste

• Sweet in taste

• Salty in taste

• None of the options