National Science Olympiad Forum By SOF Olympiad Trainer - Page 127
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Meghna Sesha from Deens Academy, Bangalore
Subject :NSO    Class : Class 1

Ans 1:

Roli from admin, Noida
Class : Class 3

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Reyansh Rittisha from Delhi Public School, UDAIPUR
Subject :NSO    Class : Class 4

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darshni sankar from kendra vidyalaya, Bareilly
Subject :NSO    Class : Class 6

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Shreyans Mondal from GD Goenka Public School Dakshineswar, Kolkata
Subject :NSO    Class : Class 7

Ans 1:

I Riona Angel from Pincushion Montessori International School, Vellore
Class : Class 7

Ans 2:

ABDUL Rahman SIDDIQUI from Indian school , muscat
Class : Class 8

Ans 3:

Shreyans Mondal from GD Goenka Public School Dakshineswar, Kolkata
Class : Class 8

Ans 4:

Shreyans Mondal from GD Goenka Public School Dakshineswar, Kolkata
Class : Class 8

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Akshara from NPS, Bengaluru
Subject :NSO    Class : Class 9

Ans 1:

Akshara from NPS, Bengaluru
Class : Class 8
ANSWER IS D

Ans 2:

Akshara from NPS, Bengaluru
Class : Class 8
ANSWER IS D IN THE SOLUTIONS , THEN WHY IS A THE ANSWER THAT THEY HAVE MARKED? UNFAIR!

Ans 3:

SOMDATTA BHATTACHARYA from Delhi Public School, Dhaligaon, Bongaigaon
Class : Class 5

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Hansika from Euroschool, Bengaluru
Subject :NSO    Class : Class 5

Ans 1:

Bidyaghnya Banerjee from Vidyasagar Shishu Niketan, West Bengal
Class : Class 6
That's true. I think you should write freezing

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Advik from DPS Patna, Patna
Subject :NSO    Class : Class 6

Match the following and select the correct option from the codes given below.

Column I Column II
(A) Railway engine (i) Quintal
(B) Packet of chilli (ii) kg powder
(C) Sack of wheat (iii) mg
(D) Huge bag of sand (iv) g
(E) Aspirin tablet (v) Metric ton


A (A) - (v), (B) - (iv), (C) - (i), (D) - (ii), (E) - (iii)
B (A) - (i), (B) - (ii), (C) - (iii), (D) - (iv), (E) - (v)
C (A) - (ii), (B) - (iv), (C) - (v), (D) - (iii), (E) - (i)
D (A) - (iii), (B) - (ii), (C) - (iv), (D) - (v), (E) - (i)


option A

Ans 1:

Advik from DPS Patna, Patna
Class : Class 4
aa

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Paarth Vashistha from Kunskapsskolan Gurgaon , Gurgaon
Subject :NSO    Class : Class 8

There are three long planks, each of length 5 meters.
Three identical balls are placed on the planks as shown in the figure.
Frictional force offered by planks I, II and III on the ball are f1, f2 and f3 respectively.

If same force (push) is given to each ball then time taken to leave the planks I, II and III are 2 minutes, 1 minute and 4 minutes respectively.
Which of the following options is correct regarding the friction force offered by the planks on the ball?

Af1 = f2 = f3
Bf1 > f2 = f3
Cf3 > f1 > f2
Df3 < f1 < f2


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Shiven Sidharth from Delhi Public School Vasant Kunj, New Delhi
Subject :NSO    Class : Class 3

Ans 1:

Kashika Goel from DPS Noida, Noida
Class : Class 6

Ans 2:

Arya Shreshth from Home School, Bengaluru
Class : Class 2
it should be b

Ans 3:

Aurinjay Mukhopadhyay from Future Foundation School, KOLKATA
Class : Class 4
it is b idiots

Ans 4:

Abhinha Ajay Ovhal from Podar International School, Latur
Class : Class 6
answer is d because the way can also be ABECD

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Advait bhat from Kendriya Vidyalaya , Bangalore
Subject :NSO    Class : Class 6

Ans 1:

Sreenidhii from Kendriya vidyalaya, DINDIGUL
Class : Class 6
4 3 9 3 3 9 5 3 9 7 69 5

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