Matter in Our Surroundings
The interparticle attractive force ______ with increasing distance between particles.
(1) increases
(2) decreases
(3) increases moderately
(4) none
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Matter in Our Surroundings
Which of the following represents correct statement?
(1) The inter-molecular force of attraction between the molecules in a liquid is less when compared to solids.
(2) The inter-molecular force of attraction between the molecules in a liquid is more when compared to solids.
(3) The inter-molecular force of attraction between the molecules in a liquid is either more or less when compared to solids.
(4) There is no inter-molecular force of attraction between the molecules in a liquid.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Matter in Our Surroundings
Which one of the following is a pseudo solid?
(1) Calcium fluoride
(2) Glass
(3) Sodium chloride
(4) All of the above
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Matter in Our Surroundings
Constituent of gasohol is:
(1) 90% petrol + 10% alcohol
(2) 80% petrol + 20% ethanol
(3) 60% petrol + 40% ethanol
(4) 50% petrol + 50% ethanol
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Matter in Our Surroundings
A drop each of two non-corrosive and non-irritating liquids A and B at a temperature of 22o C are placed on the skin. Liquid A gives a more cooling sensation than liquid B. Which of the following can be said about liquids A and B?
(1) Liquid A has higher boiling point than that of liquid B
(2) Liquid A has higher latent heat of vaporization than that of liquid B
(3) Liquid A has lower latent heat of vaporization than that of liquid B
(4) The boiling points of liquid A and B are equal
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Matter in Our Surroundings
The decreasing order of densities of solids, liquids, and gases for a given mass is:
(1) solid > gases > liquids
(2) gases > solids > liquids
(3) liquids > gases > solids
(4) solids > liquids > gases
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Matter in Our Surroundings
Which process is used to separate a mixture of two miscible liquids A & B having boiling points 56°C and 65°C respectively?
(1) Distillation
(2) Fractional distillation
(3) Sublimation
(4) Steam distillation
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Matter in Our Surroundings
In a substance, particles vibrate so fast that their fixed position break down and then they move freely. It represents:
(1) a relationship between absolute temperature and the kinetic energy of particles
(2) It represents relationship between volume and temperature at constant pressure
(3) a state in which the liquid and gas phases are in equilibrium
(4) solid phase changing to the liquid phase
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Matter in Our Surroundings
The path of light gets illuminated when passed through the solution –
(1) Blood solution(aq)
(2) Brine solution(aq)
(3) Copper sulphate solution(aq)
(4) Acetic acid solution(aq)
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
