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WorksheetsMatter in our surroundings & Motion and Time
Total questions: 20
Worksheet time: 10mins
In which state of matter , process of diffusion is fastest?
Liquids
Gases
Solids
Semi - solids
During summer, water kept in an earthen pot becomes cool because of the phenomenon of:
diffusion
transpiration
osmosis
evaporation
A few substances are arranged in the increasing order of 'forces of attraction'between their particles.Which one of the following represents a correct arrangement?
Water,air,wind
Air,sugar,oil
Oxygen,water,sugar
Sugar,juice,air
On which factors evaporation does not depend
Humidity
Temperature
Surface area
Quality of matter
which condition out of the following will increase the evaporation of water?
increase in temperature of water
decrease in temperature of water
less exposed surface area of water
adding common salt to water
Which of the following is not a characteristic of matter?
Matter is made up of extremely small particles
There is no space between particles of matter
The particles of matter are continuously moving
The particles of matter attract each other.
Shivam visited an LPG unit and found that the gas can be liquified at specific conditions of temperature and pressure. Help him to identify the correct set of conditions.
High temperature and high pressure.
Low temperature and low pressure.
Low temperature and high pressure.
High temperature and low pressure.
Choose the correct statement out of the following
Conversion of solid into vapours without becoming liquid is called evaporation.
Conversion of vapours into solid without becoming liquid is called sublimation
Conversion of solid into liquid is called sublimation.
Conversion of liquid into vapours is called fusion.
Which of the following will produce severe burns ?
Cold water
Hot water
Boiling water
Steam
Ice floats on water because
it has higher density than water
it has lower density than water due to more volume
it is solid
it is low melting solid
Latent heat of fusion is amount of
heat energy required to change 1 kg solid into liquid completely at its melting point.
heat energy required to convert 1 kg solid into liquid at room temperature
heat energy required to change 1 g of solid into liquid completely
heat energy required to change 1 kg of solid into liquid at any temperature.
Which of the following cannot be separated by sublimation?
Iodine and NaCl
Iodine and Ammonium chloride
Camphor and Sodium chloride
Naphthalene and Sand
The amount of heat which is used to change the state of matter not for increase the temperature is called
Latent heat
Specific heat
Heat capacity
None of the above.
Speed of a car is 40km/h. What is the time taken if the distance between 2 cities is 480 km?
10 h
11h
14 h
12 h
A particle is moving in a circular path of radius r. The displacement after half circle will be
r
2r
zero
2.ƛ r
Which of the following figures correctly represents uniform motion of a moving object?
a
b
c
d
A worker covers a distance of 40 km from his house to his place of work, and 10 km towards his house back. Then the displacement covered by the worker in the whole trip is
zero km
10 km
30 km
50 km
Rate of change of displacement is called
Speed
Deceleration
Acceleration
Velocity
1. a bus starting from a station attains a speed of 40km/hr. in 15 minutes. Find its acceleration.
(a)
a car accelerates from 20km/hr. to 40km/hr. in 10 seconds.calaculate the acceleration and the distance covered by the car.
(a)
