Subject :NSO Class : Class 5
Subject :NSO Class : Class 5
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Subject :NSO Class : Class 3
Ans 1: (Master Answer)
Class : Class 1
C
Stone pebbles have spaces between them, which allow air and water to seep through and reach the roots. This will help the trees grow better.
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Subject :NSO Class : Class 4
Ans 1:
Class : Class 6
Sorry but for the explanation a and d are not correct because first we have to follow the filtration process to separate pebbles and then use evaporation process
Ans 4:
Class : Class 9
Firstly , ( Sugar and Water ) and Pebbles can be separated through Filtration Secondly , Sugar and Water can be separated by Evaporation So , the answer is Option (A)
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 3
Ans 1: (Master Answer)
Class : Class 1
B
Citrus fruits are excellent sources of vitamin C. They can prevent diseases like scurvy and also help in curing common cold.
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Subject :NSO Class : Class 10
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 7
Study the given Venn diagram carefully.
Identify 1, 2 and 3.
| 1 | 2 | 3 | |
| A | Melting of ice | Rusting of iron | Cutting a log of wood |
| B | Glowing of bulb | Bursting a tyre | Crystallisation |
| C | Stitching of garments | Burning a matchstick | Burning of a candle |
D |
Melting of ice | Decomposition of sugar | Sublimation |
Answer please
Ans 4:
Class : Class 8
The answer is Option C..
Because burning of candle is both physical and chemical change(melting of wax could be assumed as physical change and the burning of the thread can be assumed as chemical change.. Also, sublimation of wax also takes place and can be classified as physical change.)
Ans 5:
Class : Class 5
why isn't the answer a that cutting wood can be a physical change (dead tree) and a chemical change ( all chemical reactions have stopped )
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Subject :NSO Class : Class 7
