Questions
Question 1 Multiple Choice (Single Answer)
Molecules in solids __________.
- are free to move about
- cannot move
- can slide over each other
- tend to fly away
Question 2 Multiple Choice (Single Answer)
Which of the following is not an element?
- Sodium
- Gold
- Soil
- Carbon
Question 3 Multiple Choice (Single Answer)
On heating, solid is directly converted into gaseous state. This process is called
- sublimation
- evaporation
- diffusion
- condensation
Question 4 Multiple Choice (Single Answer)
Which of the following is least compressible?
- Gas
- Liquid
- Solid
- None of these
Question 5 Multiple Choice (Single Answer)
The various physical properties of a substance may include
- colour, odour and taste
- hardness, solubility and density
- melting point and boiling point
- All of these
Question 6 Multiple Choice (Single Answer)
In which of the following states of matter is molecular attraction very strong?
- Solid
- Liquid
- Gas
- None of these
Question 7 Multiple Choice (Single Answer)
Intermolecular space is the least in
- water
- steam
- ice
- All of the above
Question 8 Multiple Choice (Single Answer)
Which of the following is not a mixture?
- Air
- Sea water
- Ice
- Soil
Question 9 Multiple Choice (Single Answer)
The process of converting gas into liquid, on cooling, is called
- evaporation
- condensation
- diffusion
- sublimation
Question 10 Multiple Choice (Single Answer)
Air is regarded as a mixture because
- its pressure may vary
- its temperature may change
- its volume changes under different conditions
- its composition may vary
Question 11 Multiple Choice (Single Answer)
Which of the following properties is different for solids, liquids and gases?
- Movement of molecules
- Particle size of the substance
- Mass of the substance
- Energy exchanges