मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ५

Chemical reactions are example for

Advertisements
Advertisements

प्रश्न

Chemical reactions are example for

पर्याय

  • reversible change

  • irreversible change

  • both of them

  • none of them

MCQ
Advertisements

उत्तर

Irreversible change

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Science in Everyday Life - Evaluation [पृष्ठ १३७]

APPEARS IN

सामाचीर कलवी Science - Term 1 [English] Class 5 TN Board
पाठ 4 Science in Everyday Life
Evaluation | Q I. 4. | पृष्ठ १३७

संबंधित प्रश्‍न

Very Short Answer Type Question:
Give two examples of reversible changes.


Very Short Answer Type Question:
Some common changes are given in the below Table. Which of these changes do you think can be reversed?

Change Can be reversed
(i) Raw egg to boiled egg Yes/No
(ii) Batter to idli  
(iii) Wet clothes to dirty clothes  
(iv) Woollen yarn to knitted sweater  
(v) Grain to its flour  
(vi) Cold milk to hot milk  
(vii) straight string to a cold string  
(viii) Bud to flower  
(ix) Milk to paneer  
(x) Cow dung to biogas  
(xi) stretched rubber band to its normal size  
(xii) Melting of ice-cream  

An example for reversible change is


Circle the odd one.


Circle the odd one.


Name the two types of changes.


Analogy:

Irreversible change: Making idly front batter.
Reversible change: ______.


Look at the figure which shows three situations.

Which of these shows a reversible change and why?


Paheli had bought a new bottle of pickle from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?


lt was Paheli’s birthday, her brother Simba was helping her to decorate the house for the birthday party and their parents were also busy making other arrangements. Following were the activities going on at Paheli’s home:

  1. Simba blew balloons and put them on the wall.
  2. Some of the balloons got burst.
  3. Paheli cut colourful strips of paper and put them on the wall with the help of tape.
  4. She also made some flowers by origami (paper folding) to decorate the house.
  5. Her father made dough balls.
    Mother rolled the dough balls to make puries.
  6. Mother heated oil in a pan.
  7. Father fried the puries in hot oil.

Identify the activities at Paheli’s home as those that can be reversed and those which cannot be reversed.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×