class 9 science mcq
34 Science is an organized study of knowledge that is based on
1. controlled conditions
2. phenomena
3. experimentation
4. observation
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33 A geologist examines the
1. territorial behaviors
2. distribution of fossils
3. rate of reaction
4. angular momentum
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32 Science is a tool for searching
1. truths of nature
2. amazing to think
3. many problems
4. history of nature
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31 The way that was followed by scientists is called
1. enlightenment method
2. questioning method
3. scientific method
4. supportive method
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30 " The theory of gravitation " was discovered by
1. einstein
2. newton
3. Aristotle
4. galileo
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29 " History of science " was written by
1. Robert hook
2. f. cojori
3. newton
4. Copernicus
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28 Heliocentric theory was proposed by
1. Albert einstein
2. Robert clins
3. Copernicus
4. f.cojori
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27 The following one is used to measure liquids in laboratory
1. measuring cylinder
2. spring balance
3. buret
4. both 1 and 3
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26 ' Supersonics ' are
1. instruments
2. jet planes
3. missiles
4. none
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25 The following one is used to measure time in the laboratory
1. wall clock
2. time clock
3. wrist clock
4. stop clock
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