General
✓✗Which of the following is not a property of true solution ?
- They are stable
- Their particles can be seen
- They do not scatter light
- They cannot be separated by filtration
General
✓✗If a mixture (liquid) does not show Tyndall effect it is
- Solution
- Colloid
- Suspension
- All of the above
General
✓✗Boiling point of alcohol is
- 75°C
- 78°C
- 87°C
- 97°C
General
✓✗Which one of the following is a sublime substance?
- Camphor
- Naphthalene
- Iodine
- All are sublime
General
✓✗Which one of the following will not show the Tyndall effect?
- Copper sulphate solution
- Blood
- Soap solution
- Milk
General
✓✗Which of the following is not a compound?
- Sugar
- Steam
- Ammonia gas
- Chlorine gas
General
✓✗Common salt is purified by
- Evaporation
- Crystallization
- Centrifugation
- Dissolving in suitable solvent
General
✓✗Arrange by size of particles (smallest to largest):
- Colloid < suspension < solution
- Suspension < solution < colloid
- Solution < suspension < colloid
- Solution < colloid < suspension
General
✓✗The two elements which are in liquid state at room temperature are -
- Water & Bromine
- Water & Alcohol
- Bromine & Mercury
- Mercury & Lead
General
✓✗Iron and sulphur can be separated from iron sulphide (FeS) by using
- A magnet
- Carbon disulphide (CS2)
- Both a magnet and carbon disulphide
- None of these