Chemistry, asked by rahulsingh81606, 3 months ago

please help me. do it fast

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Answered by atirbus

1

Answer:

1 (a)

2 (b)

3 (a)

4 (b)

5 (c)

Explanation:

Q. 1,2,3 are conceptual

Q. 4. avg speed = 20+20/(20/40+20/60) =48km/hr

Q. 5 speed = 100+25/5 = 25

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