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Describe the construction and working of mercury barometer.
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Higher Order Thinking Skill.
How high does the mercury barometer stand on a day when atmospheric pressure is 98.6 kPa?
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The e.m.f of a cell is analogues to ______ of a pipe line.
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Match the following.
| 1. | Magnetic material | a) | Oersted |
| 2. | Non-magnetic material | b) | Iron |
| 3. | Current and magnetism | c) | Induction |
| 4. | Electromagnetic (d) Wood induction | d) | Wood |
| 5. | Electric generator | e) | Faraday |
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Assertion: When water is heated up to 100°C, there is no raise in temperature until all water gets converted into water vapour.
Reason: Boiling point of water is 10°C.
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Why do people prefer wearing white clothes during summer?
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The speed of Sun in km/s is______.
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The rotational period of the Sun near its poles is ______.
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A man weighing 60 kg in the Earth will weigh 1680 kg in the Sun. Why?
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Among the following______ is a mixture.
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A few drops of ‘Dettol’ when added to water the mixture turns turbid. Why?
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How will you separate a mixture containing saw dust, naphthalene and iron filings?
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How is a mixture of common salt, oil and water separated? You can use a combination of different methods.
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Graphene is one atom thick layer of carbon obtained from ______.
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Painkiller drugs are called ______.
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Higher Order Thinking Skill.
Sudha met with a fire accident. What kind of drug(s), she must take?
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______ and ______ are complex tissues.
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What is complex tissue?
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What are permanent tissues? Describe the different types of simple permanent tissues.
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