Solving the Changes Around Us Multiple Choice Questions of Class 6 Science Chapter 6 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Changes Around Us Class 6 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 6 Science Class 6 and cross-check your answers during preparation.

Question 1.
When ice melts into water, what types of changes do you observe ?
(a) Physical changes
(b) Chemical changes
(c) Both (a) and (b)
(d) None of these

Answer

(a) Physical changes
Ice melts into water is physical change.

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Question 2.
Cooked food is the:
(a) Chemical change
(b) Physical change
(c) Both (a) and (b)
(d) None of these

Answer

(a) Chemical change
Cooked food is a chemical change.

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Question 3.
If we burn a candle, the height of a candle will .
(a) Decreased
(b) Increased
(c) Remain same
(d) None of these

Answer

(a) Decreased
The height of burning candle is always decreased.

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Question 4.
For making the curd, we should the milk.
(a) Heat
(b) Cool
(c) Boil
(d) None of these

Answer

(a) Heat
For making the curd, we should heat the milk.

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Question 5.
Metal rim is made slightly than the wooden wheel.
(a) Bigger
(b) Smaller
(c) Equal
(d) None of these

Answer

(b) Smaller
Metal rim is made slightly smaller than the wooden wheel.

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Question 6.
the metal rim expands and fits into the wheel.
(a) On boiling
(b) On cooling
(c) On heating
(d) All of these

Answer

(c) On heating
The incense stick has burnt to give off gases and ashes.

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Question 7.
The black material (tar) for repairing road is .
(a) Heated
(b) Cooled
(c) Heated and cooled
(d) None of these

Answer

(a) Heated
The black material (tar) for repairing road is heated.

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Question 8.
The incense stick has burnt to give off.
(a) Gases
(b) Ashes
(c) Both (a) and (b)
(d) None of these

Answer

(c) Both (a) and (b)
The incense stick has burnt to give off gases and ashes.

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Question 9.
Metal expand on heating and contract on.
(a) Boiling
(b) Washing
(c) Cooling
(d) Both (a) and (b)

Answer

(c) Cooling
Metal contract on cooling.

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Question 10.
A change in a substance can be brought by heating it or by it with other substances.
(a) Cooling
(b) Boiling
(c) Washing
(d) Mixing

Answer

(d) Mixing
A change be in a substance can be brought by heating it or by mixing it with other substances.

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Question 11.
An iron piece is heated red hot and beaten into a shape.
(a) Desired
(b) Undesired
(c) Same
(d) All of these

Answer

(a) Desired
A iron piece is heated red hot and beaten into a desired shape.

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Question 12.
The change which can be reversed is known as:
(a) Reversible change
(b) Irreversible change
(c) Both (a) and (b)
(d) None of these

Answer

(a) Reversible change
The change which can be reversed is known as reversible change.

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Question 13.
The change which cannot be reversed is known as:
(a) Reversible change
(b) Irreversible change
(c) Both (a) and (b)
(d) None of these

Answer

(b) Irreversible change
The change which cannot be reversed is known as irreversible change.

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Question 14.
A process in which liquid changes into gas is known as:
(a) Solution
(b) Fusion
(c) Condensation
(d) Evaporation

Answer

(d) Evaporation
Evaporation is the process in which liquid changes into gas.

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Question 15.
A process by which gas is turned into liquid is known as:
(a) Solution
(b) Fusion
(c) Condensation
(d) Evaporation

Answer

(c) Condensation
Condensation is the process by which gas is turned into liquid.

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Question 16.
A process in which liquid is freezed into solid is known as:
(a) Condensation
(b) Fusion
(c) Solution
(d) Evaporation

Answer

(b) Fusion
Fusion is the process in which liquid is freezed into solid.

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Question 17.
When a solid dissolves in liquid then is formed.
(a) Condensation
(b) Fusion
(c) Solution
(d) Evaporation

Answer

(c) Solution
When a solid dissolves in liquid then solution is formed.

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Question 18.
Write a few changes taking place around us on their own:
(a) Grain to its flour
(b) Bud to flower
(c) Cow dung to biogas
(d) Both (b) and (c)

Answer

(d) Both (b) and (c)
Bud to flower, cow dung to biogas are the changes taking place around us on their own.

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Question 19.
The changes that require long time to occur are called:
(a) Fast change
(b) Slow change
(c) Permanent change
(d) Temporary change

Answer

(b) Slow change
The changes that require long time to occur are called slow change.

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Question 20.
The changes which occur immediately are called:
(a) Slow change
(b) Temporary change
(c) Permanent change
(d) Fast change

Answer

(d) Fast change
The changes which occur immediately are called fast change.

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Question 21.
Irreversible changes can also be called:
(a) Temporary change
(b) Reversible
(c) Permanent change
(d) None of these

Answer

(c) Permanent change
Irreversible changes can also be called permanent changes.

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Question 22.
Reversible changes can also be called:
(a) Temporary change
(b) Permanent change
(c) Fast change
(d) Slow change

Answer

(a) Temporary change
Reversible changes are temporary changes.

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Match the following:

Question 1.

Column-A	Column-B
1. Glowing of an electric bulb	(a) reversible change
2. Growth of nails and hair	(b) undesirable change
3. Earth quake and Tsunami	(c) chemical change
4. Change of water into ice	(d) physical change
5. Burning of waste papers	(e) slow change

Answer

Column-A	Column-B
1. Glowing of an electric bulb	(a) reversible change
2. Growth of nails and hair	(e) slow change
3. Earth quake and Tsunami	(b) undesirable change
4. Change of water into ice	(d) physical change
5. Burning of waste papers	(c) chemical change

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State whether are True or False:

Question 1.
It is possible to get back the balloon in its original shape and size if it does not burst.

Answer

True

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Question 2.
It is not possible to get back the ball of dough again.

Answer

False

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Question 3.
The size of the paper is same as before and after making an aeroplane by folding.

Answer

True

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Question 4.
If the potter bakes the pot in an oven, this change can reversed.

Answer

False

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Question 5.
Tearing of a cloth is a reversible change.

Answer

False

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Question 6.
Curdling of milk is a chemical change.

Answer

True

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Question 7.
Substances dissolves easily at room temperature than at higher temperature.

Answer

False

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Question 8.
Air contracts on heating.

Answer

False

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Question 9.
Exposure of a photographic film is an irreversible change.

Answer

False

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Fill in the blanks:

Question 1.
Souring of milk is a ………………….. change.

Answer

chemical change

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Question 2.
Breaking of glass is a ………………….. change.

Answer

irreversible change

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Question 3.
Chalk powder is ………………….. in water.

Answer

insoluble

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Question 4.
Powdering of sugar is a ………………….. change.

Answer

physical change

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Question 5.
On heating the solubility of a substance ……………………

Answer

increases

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Question 6.
The solution which cannot dissolve more of a solute at a given ……………………

Answer

temperature

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Question 7.
Changes can effect the things in their surroundings in ………………….. ways.

Answer

different

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Question 8.
Some times, leaves ………………….. from trees, change colour and dry out.

Answer

fall

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Question 9.
A balloon changes its size and shape on ………………….. air into it.

Answer

blowing

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Question 10.
A toy aeroplane made by ………………….. paper.

Answer

folding

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Question 11.
A ball of dough and a rolled out ……………………

Answer

roti

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Question 12.
Tools are often ………………….. before fixing wooden handles.

Answer

heated

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Question 13.
Cart wheel with ………………….. rim fixed to it.

Answer

metal

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