Specific gravity bottle is used to determine
Relative density of a liquid
Mass
Weight of materials
Temperature of a liquid
Cork floats in water, because
Water has high melting point
Cork has more density than water
Cork has less density than water
Volume of cork is very small
Density in general, ________ with a rise in temperature.
increases
decreases
First increases and then decreases
no change
A piece of wood has volume 200cm3 and its mass is 150g. Find the density of wood in SI system?
50 kg/m3
500 kg/m3
250 kg/m3
750 kg/m3
Relative density is the ratio of the density of the substance to the density of water at
0°C
1°C
5°C
4°C
A piece of Iron of volume 30 cm3 has a mass of 234g. Find the density of Iron?
7.8 g cm-3
0.78 g cm-3
702 g cm-3
7.02 g cm-3
Density of a liquid is measured using
Thermometer
Calorimeter
Galvanometer
Hydrometer
Floating and Sinking of an object depends upon
Density of the object and liquid in which it floats
Mass of the object and volume of the liquid
Density of the object and volume of the liquid
Both a and b
Unified atomic mass unit, 1U =
1.6 x 10-19 kg
1.5 x 10-18 kg
1.66 x 10-27 kg
1.5 x 10-27 kg
Practical applications of convectional current is/are
ventilators constructed at top of the walls
cooling unit in a fridge is fitted at the top
Air conditioner in a room at some height
All of these
