Chapter 9: Respiration & Circulation - Science Mcqs for Grade 8

Q.  The life span of red blood cells is

a. 2 months
b. 45 days
c. 4 months
d. 12 days


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Rock which is composed of sand-sized pallets of calcium carbonate formed in shallow water is
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MCQs:  Metamorphic rocks are usually
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MCQs:  Gneiss has been transformed from
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MCQs:  Iron-rich igneous rocks are denser than rocks which are rich in
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MCQs:  A glassy rock having no crystals formed due to less time given is called
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MCQs:  The rocks which are non-interlocking and porous are
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MCQs:  After eruption of lava a type of rock is obtained called
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MCQs:  Magma which flows out to the surface of Earth during a volcanic eruption is called
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MCQs:  Metamorphic rocks become magma on melting at high
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MCQs:  Molten rock inside Earth's crust is called
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MCQs:  The transformed rocks are called
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MCQs:  Fine grained calcium carbonate layer of rock formed from micro-organisms is
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MCQs:  A comparison between metamorphic rock and its parent rock will yield different
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MCQs:  A which is mainly composed of fossils cemented by calcium carbonate is
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MCQs:  A comparison between marble and limestone shows marble is more
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MCQs:  Ashes and rock fragments cool and settle on earth's surface can form volcanic rock like
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MCQs:  Iron-rich igneous rock includes
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MCQs:  Rocks are made up of
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MCQs:  Water in freezing form may break the rocks in to pieces by force of
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