National Science Olympiad Forum By SOF Olympiad Trainer - Page 240
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UMANG from SPRING DALE COLLAGE, Lucknow
Subject :NSO    Class : Class 5

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AARNA Kapse from The swaminarayan school, Nagpur
Subject :NSO    Class : Class 3

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Anurag Anand from Surendranath centenary school , Ranchi
Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C

1 kilometer = 10^3 meter

1 micrometer = 10^(-6) meter

1 millimeter = 10^(-3) meter

1 centimeter = 10^(-2) meter


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Anurag Anand from Surendranath centenary school , Ranchi
Subject :NSO    Class : Class 6

Amit categorised plants on the basis of venation in their leaves. He made three groups of three members each. By mistake, he placed one wrong plant in each group. Identify the wrong member and select the correct option.
Group I : Hibiscus, Castor, Fan palm
Group II : Bamboo, Banyan, Peepal
Group III : Banana, Petunia, Grass

A Fan palm of group I should be interchanged with bamboo of group II.
B Petunia of group III should be replaced with neem.
C Fan palm of group I should be interchanged with Petunia of group III.
D Peepal of group II should be replaced with mint.

Ans 1:

Supriya from Aditya, Kakinada
Class : Class 6
C

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Anurag Anand from Surendranath centenary school , Ranchi
Subject :NSO    Class : Class 6

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Jayendra Singh Jasrotia from Jodhamal Public School, Jammu, Jammu
Subject :NSO    Class : Class 3

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ROHIT KUMAR from DPS , SURAT
Subject :NSO    Class : Class 5

Ans 1:

pranavramesh from sri chaitanya techno school, Chennai
Class : Class 6
the answer is oxygen

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Chatresh ramasai gudi from Bgsnps , Bangalore
Subject :NSO    Class : Class 8

Richa conducted an experiment as shown in the figure to investigate how the height of the ramp affects the amount of force needed to move a wooden block up the ramp.

Which of the following variables must be kept the same to ensure that her experiment is fair?
I. Number of bricks
II. Material of the ramp
III. Size of the wooden block
IV. Mass of the wooden block

AI, II and III only
BI, III and IV only
CII, III and IV only
DI, II, III and IV


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Chatresh ramasai gudi from Bgsnps , Bangalore
Subject :NSO    Class : Class 8

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

  Column I   Column II
P. Electroscope (i) Conductor
Q. Copper (ii) Lightning rods
R. Spikes (iii) Ozone
S. Lightning (iv) Charge

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


Answer is C.

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Sohan Choudhury from Delhi Public School Electronic City Bengaluru, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Sohan Choudhury from Delhi Public School Electronic City Bengaluru, Bengaluru
Class : Class 6
grass is a weed!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 2:

Juhan from Ism, Tiruvalla
Class : Class 7
Yes grass is a weed

Ans 3:

LAVANYA DADHWAL from BLOOM PUBLIC SCHOOL, South West Delhi
Class : Class 7
Weeds can be a shrub,trees or herbs

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