Paheli does not have a night lamp in her room. She covered the bulb of her room with a towel in the night to get dim light. Has she taken the right step? Give one reason to justify your answer.
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Nitu presented a silver lamp to her mother on her birthday. The lamp contained 3. 011 × 1023 atoms of silver in it.
Atomic mass of silver (Ag) = 108 u Since mass of 6.022 × 1023 atoms of silver (Ag) = 108 u Hence mass of 3.011 × 1023 atoms of silver (Ag) = 108×3.011×1023/...
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Paheli went to the market to buy sarees for her mother. She took out a thread from the edge of the two
The thread which burns with a smell of burning hair is from pure silk. Silk and hair are protein fibres. Cotton and paper both are carbohydrates, and on burning they...
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Paheli and Boojho measured their body temperature. Paheli found her’s to be 98.6 °F and Boojho recorded 37°C. Which of the followng statement is true?
(c) Both have normal body temperature.
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One morning as Paheli strolled in her garden she noticed many small plants which were not there a week ago.
The seeds from the tree may have fallen below and germinated into small plants.
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Paheli wants to present her friend a gift made of plant-fibre. Which out of the following will she select?
(a) Jute bag
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Paheli has a rose plant in her garden. How can she increase the number of rose plants in the garden?
By planting stem-cutting of the rose plant.
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Paheli wanted to glow a torch bulb using a cell. She could not get connecting wires,
Yes. Aluminium foils can act as connecting wires.
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Paheli was writing a letter to her friend. She crumpled and threw the first draft of her letter on the floor as it had become untidy.
No. Use the paper for doing rough work or convert it into paper pulp to make a handicraft item.
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When a (60W, 220V) bulb and a (100 W, 220 V) bulb are connected in series, then which bulb will glow brighter?
The resistance of the bulb is given by R =v2/ P. So, the resistance of 60 W bulb is more than the resistance of 100 W bulb. When they are connected...
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Sushila covered her nose when she cleaned Deepak’s nappy, but not when she cleaned her daughter.
We often find a smell “bad” when we think it is from something dirty. If we make up our mind, we may not be so offended by certain smells. So,...
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