General
✓✗How can you separate Ammonium chloride and sodium chloride from their mixture
- Evaporation and condensation
- Crystallization
- Sublimation
- Decantation
General
✓✗Iodine resembles metals in which of the following property -
- It is sonorous
- It is lustrous
- It has high melting point
- In all these
General
✓✗If 25ml of alcohol is present in 150ml of water, what is the concentration of the solution?
- 15%
- 14.2%
- 19.2%
- 26.6%
General
✓✗Alcohol and water can be separated from their mixture by
- Separating funnel
- Distillation
- Fractional distillation
- None of these
General
✓✗Which one of the following is not a physical change?
- Condensation of steam
- Melting of wax
- Burning of wax
- Making of solution
General
✓✗If a mixture shows Tyndall effect it is -
- Solution
- Colloid or suspension
- Suspension
- All of these
General
✓✗If gas is dispersed in liquid medium the colloid is called -
- Aerosol
- Foam
- Emulsion
- Gel
General
✓✗Boiling point of liquid nitrogen is
- -196°C
- -186°C
- -183°C
- -172°C
General
✓✗Silver can be used in making
- Jewelry
- Utensils
- Light Reflectors
- All of these
General
✓✗The non metal which has high melting point is
- Sulphur
- Graphite
- Phosphorus
- Bromine