Please select a subject first
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Explain the process which enables us to perceive motion in a cartoon film.
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How is the phenomenon of reflection used in making a kaleidoscope? What are the applications of a kaleidoscope?
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Potable water is the water which is ______.
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Fill in the blanks with the help of words given in bracket after the sentence.
While ______ your teeth, leaving the ______ running may waste several ______ of water.
(tap, litres, brushing, washing, drops)
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Fill in the blanks with the help of words given in bracket after the sentence.
Water which is suitable for ______ is called ______ water.
(washing, bathing, drinking, potable, soft)
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How can we control weeds?
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Write a paragraph in your own words of the following.
Threshing
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Why should paper be saved? Prepare a list of ways by which you can save paper.
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State whether the following statement is True or False. Correct the false statement.
Freshly harvested grains must be dried before storing
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Paddy is a major cereal crop in our country.
- In which season is paddy cultivated?
- Discuss the method of sowing.
- What measures must be taken to prevent spoilage and insect attack of harvested grains?
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Why should we save paper?
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Identify the correct statement.
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Amoeba and Paramecium belong to which category of organisms?
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Observe the vessels A, B, C and D as shown in figure carefully.
 |
 |
 |
 |
| 300 mL | 50 mL | 500 mL | 60 mL |
| A | B | C | D |
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The town hall building is situated close to Boojho’s house. There is a clock on the top of the town hall building which rings the bell every hour. Boojho has noticed that the sound of the clock appears to be much clearer at night. Explain.
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Which of the following procedures will give you water free from all impurities?
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Fill in the blanks with the help of words given in bracket after the sentence.
Water which looks clean still has disease carrying ______ and ______ impurities.
(insects, microorganisms, particles, dissolved, harmful)
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Find out the wrong statement and write it in its correct form.
Chlorination is a commonly used chemical method for killing germs in water.
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Find out the wrong statement and write it in its correct form.
Water that is suitable for drinking is called soft water.
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Explain the traditional ways of purifying water to make it fit for drinking.
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