Chapter 19: Respiration & Food Energy - Science Mcqs for Grade 7


Q.  The main cause of 'asthma' is

a. tobacco smoke
b. pets
c. exercise
d. laughing


ANSWER: See Answer
 
No explanation is available for this question!
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MCQs:  If both water and carbon dioxide is given to plant it will not be able to prepare its own food in absence of
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MCQs:  Melting, freezing, boiling, evaporation and condensation are all
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MCQs:  Chemical change involves the formation of
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MCQs:  The change which is not accompanied by formation of new substance is called a
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MCQs:  Dilute acids and alkalis react together to form
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MCQs:  Fuel obtained from fossils is known as
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MCQs:  The process in which reactants react together to form a product, is called
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MCQs:  If two or more substances are combined to form a new substance, the chemical reaction is termed as
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MCQs:  When substance combines with oxygen while burning, the reaction is termed as
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MCQs:  The process of breaking down of any substance into smaller substances by heating, is called
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MCQs:  Zinc salt reacts with dilute shulphuric acid to form zinc salt and
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MCQs:  Natural gas is made up of compound
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MCQs:  Power machines in factories and vehicles are examples of
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MCQs:  Natural gas is more efficient and produces less
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MCQs:  In physical changes the solutes and solvents can easily be separated by
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MCQs:  Irreversible changes include
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MCQs:  Changes occur in matter at
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MCQs:  Due to less concentrated energy, the regions that are away from equator do not have much
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