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Periodic and Non-Periodic Changes

Three events ...

Question

Three events and their durations are mentioned in the following image. This is an example of a ______ change.

A

Irreversible change

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B

Fast change

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C

Periodic change

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D

Non-periodic change

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Solution

The correct option is C Periodic change
In the given image event 1 is followed by event 2 after one day. Event 2 is followed by event 3 after three days. After event 3, event 1 happens again after two days. Thus, it can be concluded that these events repeat after every six days. Changes which repeat after regular period of time are called periodic changes. Therefore, the change shown in the given image is periodic.

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Similar questions

Q. Three events and their duration are mentioned in the following image. Analyse the change taking place between the given events.

Q. Melting of wax and heating of blade are the examples of
(a) physical change
(b) chemical change
(c) periodic change
(d) irreversible change

Q. Fill in the blanks with the correct words.
1. Melting of ice-cream is an example of a/an .................... (reversible/irreversible) change.
2. Ripening of fruits is an example of a/an .................... (reversible/irreversible) change.
3. Cooking of foood is an example of a/an .................... (reversible/irreversible) change.
4. Breaking of glass is a .................... (physical/chemical) change.
5. .................... (Heating/Cooling) causes steam to change into water.

Q. Fill in the blanks to say whether the following changes are 'reversible' or irreversible':
1. A change which cannot be reversed is called ............................... .
2. Setting of cement is an example of a ............................... change.
3. Absorption of water by a sponge is an example of a ............................... change.
4. Cooking of food represents ............................... change.
5. Digestion of food is a ............................... change.

Q. Give a reason, why?

A. Freezing of water is a reversible change while burning of a candle an irreversible change.

B. Change of seasons is a periodic change while the burning of weather is a non-periodic change.

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