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
1 kg of iron occupies less space compared to 1 kg of sponge. Why ?
Iron has less density than sponge
Iron and sponge have equal densities
Iron has more density than sponge
None
Door locks are made of metals because metals:
Have luster
Are opaque
Are good conductors of heat
Are hard and strong
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
A needle and a knife belong to the same group because:
They are transparent
They are hard and magnetic
They float on water
They are poor conductors of heat
Salt water is a
Good conductor of electricity
Bad conductor of electricity
Insulator
All the above
Kerosene floats on water because
Kerosene has more density
Kerosene has less energy
Densities of water and kerosene and equal
Water has more density
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
Of our total body weight, about two thirds is made up of water and it is important to have a regular intake of water. This is because
Water has lots of vitamins and proteins
Water can dissolve a lot of substances
Water conducts heat very fast and there by maintains the body temperature
Water is stored as energy in our body
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
