National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7

Ans 3: (Master Answer)

Class : Class 1

Rubber do not control the flow of electric current .But it is an insulator of elctricity .Hence, wearing rubber gloves while handling the live wires  protects us form elctric shock. .


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Subject :NSO    Class : Class 6

Observe the given figures showing different methods of separation carefully and select the correct statements.

I. Method 1 is generally used to obtain pure water from muddy water.
II. Method 2 is used to separate components of a mixture which are miscible with each other and have different densities.
III. Method 3 is generally used to separate pulp from fresh fruit juice.
IV. Method 1 is based on the difference in boiling points of immiscible liquids while method 3 is based on the difference in size of components of a solid-solid mixture.

A(I) and (IV) only
B(II) and (III) only
C(II) and (IV) only
DNone of these


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Subject :NSO    Class : Class 6

Match column I with column II and select the correct option from the given codes.

  Column I   Column II
P. Distance (i) m/s
Q. Speed (ii) s
R. Volume (iii) m
S. Time period (iv) m3
T. Density (= mass ÷ volume) (v) kg/m3


AP-(i), Q-(ii), R-(iii), S-(iv), T-(v)
BP-(iv), Q-(iii), R-(ii), S-(v), T-(i)
CP-(iii), Q-(i), R-(iv), S-(ii), T-(v)
DP-(iii), Q-(i), R-(ii), S-(iv), T-(v)


Ans 1: (Master Answer)

Class : Class 1

C

For an object moving with constant speed , speed is given by the ratio of distance travelled to the time taken by it. Hence, its SI unit is m/s.

Volume of an object is obtained by multiplying area of cross section to its height .Hence, its SI unit is m^3.


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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
Is petrol a mixture or a compound?

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
It should be since there is less space in the tube p1 than tube p2

Ans 2:

Class : Class 7
A

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
C

Ans 2:

Class : Class 4
c

Ans 3:

Class : Class 4
c

Ans 4: (Master Answer)

Class : Class 1

C

Edible part of radish is leaves and roots. So, P can be radish. Edible part of turnip is roots. So, Q can be turnip. Edible part of lotus is stem. So, R can be lotus. Edible part of broccoli is flower. So, S can be broccoli. Edible part of pumpkin is fruit. So, T can be pumpkin.


Ans 5:

Class : Class 4
RADDISH IS A ROOT!!!!

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Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1

D

S is the Ovary of the female reproductive part of the plant. But it’s the Stigma which first receives the pollen grains from anther. These pollens then travel down through the Style and reach the Ovary.


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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

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