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True or False
Cotton is a natural polymer.
Concept: undefined >> undefined
Cotton: natural : Polyester: ______.
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A drug effective in the treatment of pneumonia, and bronchitis, is______.
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Penicillin was first discovered by______.
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True or False – If False give the correct answer
Antibiotics does work for viruses like cold and
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Explain briefly about antibiotic and analgesic?
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Which parts of the goat and sheep is used for manufacturing clothes.
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Give two example of elements.
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How do you find the area of irregularly shaped figures?
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Define velocity Mention its formula and unit.
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Matter is its simplest form is called ______.
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______ is a mixture of gases.
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______ is the life-giving element is the air.
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Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
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Name the element which is used for making computer chips.
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Name the constituents of water.
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What is the Latin name of Sodium?
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Give an account of elements known to us.
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Complete the table by writing the symbols of the following elements
| Element | Symbol |
| Aluminum | Al |
| Nickel | |
| Bromine | |
| Helium | |
| Magnesium |
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Complete the table:
| Element | Latin Name | Symbol |
| Mercury | ______ | Hg |
| Lead | Plumbum | ______ |
| Iron | ______ | Fe |
| Potassium | Kalium | ______ |
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