Clay is used for making pots and bricks because it is:
Opaque
Non magnetic
A good conductor of heat
Easily moulded into different shapes
Equal volumes of different substances
Have equal weights
Have equal densities
Need not have equal weights
None
Most of the metals:
Are hard
Have luster
Are good conductors of electricity
All of these
A vendor sells white powdered salt mixed with white powdered stone. The knowledge of which properly will help you detect this malpractice?
Ductility
Opacity
Density
Solubility
Which of the following material is hard, opaque and shines when freshly cut ?
Rubber
Wood
Tin
Plastic
Clinical thermometers are made up of glass. The important characteristic(s) considered for this selection is/are:
It is a bad conductor of heat
It is transparent
Both A and B
It is strong
By dropping a drop of water on a glowing electric blub, it bursts. This is because glass is a:
Good conductor of heat
Bad conductor of heat
Transparent substance
Good conductor of electricity
Which of the following is suitable to make rain coats?
Cotton
Silk
Most balloons, tyres and footballs are made of rubber. This is because rubber is:
Naturally available
Cheap
An electrical insulator
Soft and flexible
Even though a cinema hall is a place prone to fire hazards, the interiors are mostly made of wood or wood based panels. Why is this so ?
Wood does not catch fire easily
Wood is opaque
Wood can absorb sound
Wood is very commonly available
