Madhuri kept some water in a refrigerator and after some time the water changed into ice. What is this process called?
✘ Condensation
✔ Freezing
✘ Boiling
✘ Evaporation
Which property is true for solids?
✘ It has no definite shape
✔ It has definite shape
✘ It has no definite volume
✘ It flows down wards and upwards
Identify the substance that is insoluble in water.
✘ Sugar
✘ Salt
✘ Lemon juice
✔ Oil
What helps in letting the smoke out from the kitchen?
✘ Drain pipe
✔ Chimney
✘ Water pipe
✘ Bolts
Which from of water is water vapour?
✔ Gas
✘ Liquid
✘ Solid
✘ All of these
Anurag took a glass of cold water from the refrigerator and placed it on a table. After few minutes he observed water drops on the outer surface of the glass. How did they form?
✘ Glass produced water droplets
✘ The water in the glass moved through the glass
✔ Water vapour present in the air is condensed
✘ Water came out from the gaps present in the glass
We can measure the room temperature by using ___________________.
✔ Thermometer
✘ Barometer
✘ Speedometer
✘ None of these
When ice cream is left out of a freezer, the ice cream changes its form from a _________.
✘ solid to a gas
✘ gas to a liquid
✔ solid to a liquid
✘ Liquid to a gas
A student took some unknown matter into a beaker. The matter took the shape of the Beaker. Later he transferred the matter into a measuring cylinder. The matter took the shape of the cylinder but its volume remained the same. What is the state of that matter?
✘ Solid
✘ Gas
✔ Liquid
✘ All of these
The burning of fire needs
✔ air
✘ water
✘ rain
✘ All of these
To obtain water from water vapour, we should _______________ the water vapour.
✘ heat
✘ evaporate
✔ condense
✘ do nothing
When Saira blew air into a balloon it expanded. This shows that
✘ air has no mass
✔ air occupies space
✘ air has no weight
✘ air is visible
Which of the following is wrong?
✘ A
✔ B
✘ C
✘ D
Which instrument is used to measure the temperature of hot water?
✘ Stopwatch
✘ Ruler
✔ Thermometer
✘ Balance
Which states of matter has the strongest force of attraction between its molecules?
✔ Solid
✘ Liquid
✘ Gas
✘ All of these
Which of the following are in solid state?
✘ Only P and R
✘ Only P and S
✔ Only Q and R
✘ Only R and S
Look at the venn diagram below.
✔ Water
✘ Salt
✘ Sugar
✘ Kerosene
Which process is represented by ‘X’?
✔ Boiling
✘ Freezing
✘ Melting
✘ Condensation
Snow is a form of water in _________________state.
✘ liquid
✘ gaseous
✔ solid
✘ vapour
In how many states can water exist?
✘ 1
✘ 2
✔ 3
✘ 4
Which of these is a SOLID and has a STRONG SMELL?
✘ Salt
✘ Petrol
✔ Camphor
✘ Refined oil
Which of the following is a source of heat and light to all living organisms?
✘ Wood
✘ Coal
✔ Sun
✘ Moon
Which of the following would BEST describe refined oil?
✘ It is a Solid and dissolves in water
✘ It is a liquid and dissolves in water
✘ It is a solid and does NOT dissolve in water
✔ It is a liquid and does NOT dissolve in water
What can be ground into a paste using a little water?
✔ A piece of newspaper
✘ A piece of plastic
✘ A piece of silk cloth
✘ A piece of a cycle tube
What do 1, 2, 3 and 4 in the processes shown below represent?
✘ 1 – heat, 2 – cool, 3 – cool, 4 – heat
✔ 1 – heat, 2 – cool, 3 – heat, 4 – heat
✘ 1 – cool, 2 – heat, 3 – heat, 4 – heat
✘ 1 – cool, 2 – cool, 3 – heat, 4 – cool
Name the process ‘X’ in the given figure.
✘ Boiling
✘ Freezing
✘ Melting
✔ Condensation
Which processes produce energy?
✘ Digestion
✔ Respiration
✘ Melting
✘ Evaporation
Why does water vapour rise upwards?
✘ It is cooler than the surrounding air.
✘ It is heavier than the surrounding air.
✔ It is lighter than the surrounding air.
✘ It is attracted by the clouds in the sky.
When water is cooled to _________________ degree celsius, it freezes and changes to ice.
✘ 100
✘ 50
✘ 25
✔ 0
Which of these has been put under the INCORRECT heading?
✘ Eraser
✘ Orange juice
✘ Steam
✔ Ice cube
Which of these is the solid form of water?
✘ Steam
✔ Ice
✘ Water vapour
✘ All of these
Which of the following is/are in the gaseous state of matter?
✘ Water vapour
✘ Ice cream
✔ Steam
✘ Both (A) and (C)
The clouds are formed by
✔ condensation
✘ evaporation
✘ melting
✘ boiling
What is the best way to dispose waste water from our kitchen?
