Class 6 Science

A substance dissolved in water is ______

• sand

• chalk

• wax

• sugar

An object that floats in water is _______

• wood

• sugar

• iron nail

• none of these

Wood and stone is a materials

• luminous

• non-luminous

• smooth

• none of these

Light travels in a _______

• Straight line

• curved line

• zig zag

• round only

which type of objects do not allow light to pass through?

• translucent

• opaque

• transperant

• penumbra

Bouncing back of light from shining surface is called ______

• reflection

• refraction

• bending

• dispersion

which is a device to image the sun

• plane mirror

• pin hole camera

• straight pipe

• glass slab

out of these which one is not a man- made luminous body

• electric bulb

• burning candle

• firefly

• oil lamp

A bulb has ____

• two terminals and one filament

• two terminals and two filament

• multi terminals and single filament

• single terminal and single filament

Filament of a bulb is made up of _____

• aluminium

• chromium

• platinum

• tungsten