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
Which of the following is made by hydrolysis of starch ?
(1) glucose
(2) fructose
(3) sucrose
(4) maltose
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Matter in Our Surroundings
Cheese is an example of which type of colloid?
(1) Gel
(2) Foam
(3) Sol
(4) Solid sol
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Matter in Our Surroundings
The fourth state of matter is :
(1) solid
(2) fluid
(3) liquid
(4) plasma
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Matter in Our Surroundings
Calculate the molal depression constant of a solvent which has freezing point 16.6oC and latent heat of fusion 180.75 J/g.
(1) 2.68
(2) 3.86
(3) 4.68
(4) 2.86
| 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
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
A solid cube of iron whose edge is 4 inches weighs 20.8 lbs. Determine the specific gravity of this sample of iron, if water weighs 62.4 pounds per cubic foot?
(1) 4.5
(2) 5.2
(3) 9.0
(4) 27
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Matter in Our Surroundings
Miscible liquid among the following is
(1) alcohol in water
(2) milk
(3) oil in water
(4) kerosene in water
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 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 : -. |
