GENERAL INSTRUCTIONS (Please read the following instructions very carefully)
1. Question marks are mentioned with each Question.
2. Please write neat and clean hand-writing on Answer Sheet. Use Margin on right side and left side of Answer Sheet.
3. Do not refresh or back page.
4. Do not click the button Submit Test before completing the paper on Answer Sheet.
5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
6. Take photo of all the Sheets and make single pdf file.
1
____________- form of matter fills the space like it has in the balloon.
Stones
Gases
Solids
Paper
2
Freezing is the opposite of ___________________.
Melting
Boiling
Evaporation
All of these.
3
Steam causes ____________________burns than boiling water.
More severe
Less severe
No
Normal
4
As atmospheric pressure increases, the boiling point becomes _______________________.
Higher
Lower
Unchanged
None of these.
5
The intermixing of particles of two different types of matter on their own is called ___________________
Diffusion
Condensation
Effusion
6
____________ colour is preferred during summers.
White
Black
Brown
Voilet
7
The smell of perfume spreads our by a process known as ____________________
Fusion
8
The term ‘vapour’ is used for those gases which exist in the __________________ form at room temperature.
Solid
Liquid
Gas
9
The temperature at which a liquid changes into its gaseous form is called ___________________
Boiling point
Melting point
Vapourization
Triple point
10
Which of the following are correct :
(a) The term ‘vapour’ is used for those gases which exist in the liquid form at room temperature.
(b) The term ‘gas’ is used for those gases which exist in the liquid form at room temperature.
Only (a) is correct.
Only (b) is correct.
Both (a) and (b) are correct.
11
(a) The particles of gas are continuously moving in all possible directions with different velocities.
(b)The particles of gas continuously moving in radom directions, they collide with one another and with walls of the container.
12
The boiling point of alcohol is . What is this temperature in Kelvin scale ?
373 K
351 K
375 K
78 K
13
(a) White dresses absorb less heat as compared to black or dark coloured dresses.
(b) Black or dark coloured dresses absorb less heat as compared to white dresses.
14
(a) A gas can be made to expand or contract on heating and cooling.
(b) On heating, the energy of the gas particles is increased.
(c) On heating, the gas particles move faster and also go farther away from each other.
Only (a) and (b) are correct.
Only (b) and (c) are correct.
Only (a) and (c) are correct.
15
(a) Black or any dark coloured object is a better absorber of heat than a white or light coloured object
(b) White or light coloured object is a better absorber of heat than a black or any dark coloured object.
(c) Black object’s ability to absorb more heat is utilized in designing solar cookers.