National Science Olympiad Forum By SOF Olympiad Trainer - Page 79

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Subject :NSO    Class : Class 7

The different steps of water cycle are given below randomly. Select the option that shows the correct sequence of these steps.
(i) Water droplets in clouds join together to form large droplets.
(ii) Water vapour from water bodies and from leaves of plants get added to air.
(iii) Water vapour get cooled at height.
(iv) Rain water goes back to the water bodies.
(v) Drops of water fall on the Earth as rain.
(vi) Water droplets form a cloud.

A(ii) → (vi) → (iii) → (i) → (v) → (iv)
B(iii) → (ii) → (vi) → (i) → (v) → (iv)
C(ii) → (iii) → (vi) → (i) → (iv) → (v)
C(ii) → (iii) → (vi) → (i) → (v) → (iv)


should be c

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Subject :NSO    Class : Class 6

A balloon attached to a hollow glass tube was submerged in a container of water as shown here. Rohan placed his mouth over the open end of the glass tube and blew air into it. He observed that the water level in the container rose.
This experiment tells us that air ___________.

(i) has mass
(ii) occupies space
(iii) has a definite volume
(iv) can be compressed

A(i), (ii) and (iv)
B(ii) and (iii)
C(i) and (ii)
D(ii) only


Ans 1:

Class : Class 7

Ans 2:

Class : Class 6

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 10
Thanku thanku you saod like this I never knew

Ans 2:

Class : Class 9
it is 125% it is very easy copy this text and go on google baba you might find the answer

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Subject :NSO    Class : Class 1

Ans 1:

Class : Class 1

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Subject :NSO    Class : Class 7

The given graph shows changes in the pressure in lungs during breathing.

Which of the following is incorrect regarding this?
(i) Region R to T represents inhalation.
(ii) Region P to R represents inhalation.
(iii) Region P to R represents exhalation.
(iv) Rib cage will move upward and diaphragm will get flattened at point S.
(v) Rib cage will move downward and diaphragm will become dome shaped at point S.

A(ii), (iii) and (v) only
B(i), (iii) and (iv) only
C(ii) and (v) only
D(i) and (iii) only


hi

Ans 1:

Class : Class 7
the aanswer is A , even the explanation that is given proves so...

Ans 2:

Class : Class 7
sorry B not ABut Definitely not C

Ans 3:

Class : Class 6

Ans 4:

Class : Class 9

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Subject :NSO    Class : Class 8

Read the given statements and select the correct option.
Statement 1 : Combustion is a chemical process in which a substance reacts with oxygen to give off heat and at times light.
Statement 2 : Heat and light produced in sun are due to combustion

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true and statement 2 is false.
DBoth statements 1 and 2 are false.


Why statement 2 is false sun also do combustion by chemical reactions, right?

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Subject :NSO    Class : Class 8

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