Olympiad Class-8 Science Set-2
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____ is used for the production of alcohol and wine.
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Some plants have nitrogen-fixing bacteria in their root nodules. What are these bacteria called?
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Which of the following diseases is caused by bacteria?
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Partial sterilization of a product such as milk at a high temperature is known as:
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While baking cakes, yeast reproduces rapidly and produces ___ gas.
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Amoeba belongs to
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Vaccine for small pox is discovered by
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An infectious disease is ___________ .
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24. _______ are the agents that act as carriers of a pathogen and spread diseases.
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Which of the following diseases can be cured using antibiotics?
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Amount of nitrogen in the atmosphere is
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Which organisms are microscopic and dependent on host organisms for reproduction?
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Living organisms which are invisible to the naked eye are called _________ .
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Vaccines are made up of:
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In order to take precautionary steps to control dengue, we must take measures to stop the breeding of:
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Which of the following is a communicable disease?
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Mushroom belongs to
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Malaria Is caused by
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Rhizobium bacteria
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Spyrogyra is
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Penicillium is a
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Scientist who discovered fermentation is
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Which of the following is a disease caused by protozoans?
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The bacterium present in curd is:
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Microorganisms are
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