Class 10 Science Physics Sample Question Paper 2020-21 (Science)



Assertion: Greater number of individuals are present in lower trophic levels.
Reason: The flow of energy is unidirectional.
(a)
Both A and R are true, and R is correct explanation of the assertion.
(b)
Both A and R are true, but R is not the correct explanation of the assertion.
(c)
A is true, but R is false.
(d)
A is false, but R is true.
Correct answer: (b) 

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sound
gravitation
heat
matter in our surroundings
force and laws of motion
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sound
gravitation
heat
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force and laws of motion


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