Question

1
)
5.
The persistence of sound in a
is called as :-
a) Impulse
b) Echo-Ranging
Reverberation
d) Ultrasound
A body of mass M strikes against a wall with a velocity'v'
rebounds with the same velocity. Its change in momentum is :
a) zero
b) mv
c) _mv
d) 2Mv
6, Forces of action and reaction act:
a) one after the other on same body
by simultaneously on same body
c) one after the other on different bodies
d) simultaneously on different body



8. Which of these is related to mitochondria?
(a) It behaves as a transport channel to protein between nucleus
and cytopiasm.
) li uansport materiai various regions of cyioplasia
(c) It can be the site of energy generation
(d) It can be the site of biochemical activities
9/Find out the false statement:
(a) Golgi apparatus is involved with the formation of
lysosomes.
(b) Rough endoplasmic reticulum and smooth endoplasmic
reticulum produce lipids and proteins respectively.
(c) Lysosomes are membrane bound sacs filled wil digestive
enzymes.​

Answer 1

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