National Science Olympiad Forum By SOF Olympiad Trainer - Page 261
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Arnav Ranka from Gyan Bharati School, Saket, New Delhi
Subject :NSO    Class : Class 8

Ans 1:

Siya Aneja from Tagore International , SOUTH DELHI
Class : Class 8
Zinc

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Neil Pathak from GD Goenka Public School, Paschiim Vihar, New Delhi
Subject :NSO    Class : Class 6

Ans 1:

arin chaitanya from the shri ram school, New Delhi
Class : Class 7
answer=c

Ans 2:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9

Ans 3:

arin chaitanya from the shri ram school, New Delhi
Class : Class 7

Ans 4:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 9

Ans 5: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C 

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. .


Ans 6:

RUDRAKSH BISWAS from MAYOOR PRIVATE SCHOOL, ABU DHABI
Class : Class 6
the answer is B as it protects us from shocks

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Harshvi Udani from Sawatridevi Agrawal school, Mumbai
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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Harshvi Udani from Sawatridevi Agrawal school, Mumbai
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)

Admin from revisewise, Noida
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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Nisarg Milan Salot from Narayana E-Techno School, Mumbai
Subject :NSO    Class : Class 8

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Aarush Shetty from National Public School, Bangalore
Subject :NSO    Class : Class 7

Ans 1:

GAUTHAM GOPINATH from BPDAV School, HYDERABAD
Class : Class 10
Is petrol a mixture or a compound?

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Sargah Surya from bgsnps, Bengaluru
Subject :NSO    Class : Class 7

Ans 1:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 10
A

Ans 2:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai
Class : Class 9
It should be since there is less space in the tube p1 than tube p2

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Saarang roy from Indian school ghubra, Muscat
Subject :NSO    Class : Class 4

Ans 1:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
C

Ans 2: (Master Answer)

Admin from revisewise, Noida
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 3:

ABHIRAJ from BKKG, CHAPRA, SARAN, CHAPRA
Class : Class 7
c

Ans 4:

Parth from BGS NPS, bangalore
Class : Class 4
RADDISH IS A ROOT!!!!

Ans 5:

saketh from VIBGYOUR HIGH ,BTM layout Bangalore, Bangalore
Class : Class 4
c

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Vikram from AVM, Mumbai
Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Admin from revisewise, Noida
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.


Ans 2:

arun from Delhi public School Dhuri , m
Class : Class 6
ooooops

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Shweta Garg from Vibgyor high, Vadodara
Subject :NSO    Class : Class 6

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