Matter in Our Surroundings
Which of the following can be expressed in grams per litre of a gas?
(1) Density
(2) Equilibrium constant
(3) Molar mass
(4) Freezing point
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Matter in Our Surroundings
The method to purify the colloidal solution
(1) peptization
(2) coagulation
(3) dialysis
(4) bredig's arc method
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 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 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
Two identical beakers labeled as (X) and (Y) contain 100 cm3 of water each at 20oC. To the water in the beaker (X), 100g of water at 0o C was added and stirred to mix thoroughly. To the beaker (Y), 100g of ice at 0oC was added and stirred till it melted into water. The water in the beaker (Y) will be:
(1) hotter than water in beaker X
(2) colder than water in beaker X
(3) heavier than water in beaker X
(4) lighter than water in beaker X
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 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
Name the process associated with the following.
A potassium permanganate crystal is in a beaker and water is poured into the beaker with stirring.
(1) Diffusion
(2) Dissolution
(3) Sublimation
(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 is the most precise for measuring the volume of a liquid?
(1) Test tube
(2) Graduated cylinder
(3) Burette
(4) Volumetric flask
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Matter in Our Surroundings
On heating a liquid, its surface tension:
(1) increases
(2) Decreases
(3) remains same
(4) is reduced to zero
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
