Please select a subject first
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Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
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Loading speeds up the process of ________.
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Sea water is suitable for irrigation as it contains dissolved salts.
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The density of water will not change at all temperature?
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Give a reason for the following.
Sea water is unfit for drinking.
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Define the following.
Potable water
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What is a neutralization reaction?
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The term petroleum means ________
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Match the following.
| Octane rating | Diesel |
| Cetane rating | Methane |
| Simplest hydrocarbon | Petrol |
| Peat | Bown in colour |
| Lignite | First stage coal |
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What is known as destructive distillation? Write about the products obtained from fractional distillation of petroleum.
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Write the names of any three protozoans.
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Binominal Nomenclature was first introduced in the year
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The word ‘Taxonomy’ is derived from _______.
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Artificial system of classification is based on a few characters of the plant.
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What is meant by binomial nomenclature? Give example.
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Write a short note on natural system of classification.
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Which of the following parts of our body help us in movement?
- Bones
- Skin
- Muscles
- Organs
Choose the correct answer from the options below.
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Which one of the following categories of vertebrae are correctly numbered?
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Axil skeleton in human consists of ______, ______, ______ and _______.
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Pelvic girdle is a part of axial skeleton.
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