Please select a subject first
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The term vitamin was introduced by ______.
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Swollen and bleeding gums are a symptom of ______.
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Delayed blood clotting is a symptom of deficiency of vitamin ______ in the body.
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Analogy:
Vitamin A: ______
______: Sterility in rats.
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Vitamin Bl, B2, B3, B6, B12, and Vitamin C are ______ soluble vitamins.
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Define Vitaminosis. Give an example.
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The growth medium of Aeroponics is ______.
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In some xerophytes, leaves are modified into spines as an adaptation ______.
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______ is the plant in which leaves are modified into spines.
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True or False – If False give the correct answer
Analgesics are the substances that lower the temperature during fever
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Match the following
| 1. | Antipyretic | reduce pain |
| 2. | Analgesic | reduce body temperature |
| 3. | Antacid | spontaneous combustion |
| 4. | Phosphorus | ORS Solution |
| 5. | Carbon – di – oxide | leads to respiratory problem. |
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Assertion: The Speedometer of a car or a motor-cycle measures its average speed.
Reason: Average velocity is equal to total displacement divided by total time taken.
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Exercise Problems.
A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 ms–2, with what velocity will it strike the ground? After what time will it strike the ground?
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Resistance of a wire depends on, ______.
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How are the home appliances connected in general, in series or parallel. Give reasons.
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Exercise.
The values of current (I) flowing through a resistor for various potential differences V across the resistor are given below. What is the value of resistor?
| I (ampere) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 |
| V (volt) | 1.6 | 3.4 | 6.7 | 10.2 | 13.2 |
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Which of the following converts electrical energy into mechanical energy?
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An electric motor converts ______.
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State whether true or false. If false, correct the statement.
The speed of rotation of an electric motor can be increased by decreasing the area of the coil.
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