National Science Olympiad Forum By SOF Olympiad Trainer - Page 351
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Deepika from Vibgyor high, Mumbai
Subject :NSO    Class : Class 4

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Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Subject :NSO    Class : Class 3

Ans 1:

Ashlynn Bhatia from Modern Vidya Niketan Sr. Secondary School Sector - 17, FARIDABAD
Class : Class 4
try to put yourself in my shoes . how can cotton shirt not be streched ?

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Raghav Tyagi from birla vidya niketan, new delhi
Subject :NSO    Class : Class 9

Ans 1:

Ajay from Kendriya Vidyalaya No.2 Calicut, Calicut
Class : Class 9
Ya but IT is showing c

Ans 2:

Gayathri from DAV Public School, Thane
Class : Class 9
Correct answer is -A

Ans 3:

sujal saronit from Delhi Public School , rourkela
Class : Class 9
A is the answer

Ans 4:

PRIYA from Shri O.P. Jindal Vidya Niketan, Mundra
Class : Class 10
A

Ans 5:

PRIYA from Shri O.P. Jindal Vidya Niketan, Mundra
Class : Class 10
A

Ans 6:

Yash Bindal from Global Indian International School, Singapore
Class : Class 9
Correct answer is A

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Harshad Kumar from Rajagiri Public School, Doha
Subject :NSO    Class : Class 4

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Tanushree from Asian International School, Colombo
Subject :NSO    Class : Class 7

Ans 1:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
Clouds when heavier fall as rain(Liquid). This rain water when runs off in the water bodies and gets heated under sun will again evaporate to the sky to form clouds again. So it is a reversible change. Hope its clear,.

Ans 2:

siddarth from DPS Ecity, Bengaluru
Class : Class 8
formation of clouds is irreversible

Ans 3:

Surbhi Raul from DPS Bangalore East, BENGALURU
Class : Class 7

Ans 4:

rethish from Veltech, Avadi
Class : Class 3

Ans 5:

nishka Alpesh Lad from U S Ostwal English Academy, Mumbai
Class : Class 7

Ans 6:

Dhruv Singh from VIBGYOR HIGH HORAMAVU, BANGALORE
Class : Class 9

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Anagha s Karnis from vijaya vittala vidyashala, MYSORE
Subject :NSO    Class : Class 7

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Anagha s Karnis from vijaya vittala vidyashala, MYSORE
Subject :NSO    Class : Class 7

The object starts from O having a straight line motion along the path OPQRS is represented by the distance-time graph shown in figure. Match the given statements to the different parts of the graph correctly.



(i) Object is moving with maximum speed.
(ii) Object starts moving in reversed direction.
(iii) Object is at rest.
(iv) Average velocity of object is zero.

(i) (ii) (iii) (iv)
A OS OP RS PQ
B OP RS QR OS
C PQ RS OP QR
D QR PQ OS OP


answer is d

Ans 1:

Rohan David from Oakridge International school, Hyderabad
Class : Class 7

Ans 2:

Anagha s Karnis from vijaya vittala vidyashala, MYSORE
Class : Class 8
During OP, distance travelled is maximum for a small period of time. Hence answer is B

Ans 3:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 9
b is answer

Ans 4:

Rohan David from Oakridge International school, Hyderabad
Class : Class 7

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arnab chatterjee from dps gurgaon, gurgaon
Subject :NSO    Class : Class 5

Ans 1:

Saanjh Puthran from Dr. Pillai Global Academy, Mumbai
Class : Class 5
It is slightly confusing :-(

Ans 2:

Abhigyan Panja from HEMSHEELA MODEL SCHOOL, DURGAPUR
Class : Class 5
NO IT WAS

Ans 3:

Hari Govind from Delhi Public School Chandigarh , Chandigarh
Class : Class 6

Ans 4:

Sumit Biswal from Dps gandhinagar, Gandhinagar
Class : Class 7
Yes it was a little confusing

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Bhavya Jain from K.R Manglam World School, Ghaziabad
Subject :NSO    Class : Class 5

Ans 1:

Saanjh Puthran from Dr. Pillai Global Academy, Mumbai
Class : Class 5
B.Because it allows us to see only a hazy picture of the boy's face.

Ans 2:

Dola Sai Anushka from Global Indian International school, singapore
Class : Class 7

Ans 3:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5

Ans 4:

Fiza from ABCD, Cochin
Class : Class 7
A is opaque, B is translucent and C is transparent.

Ans 5:

Pragya Mahajan from BCM Arya Model Sr Sec School, Ludhiana
Class : Class 8

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Anirudh from Modern senior secondary school , CHENNAI
Subject :NSO    Class : Class 5

Ans 1:

Pratham Dave from GNS, Bangalore
Class : Class 7
C is the answer to this question

Ans 2:

ARIHAAN SAMANTA from Springdale High School, KALYANI
Class : Class 7
bro a crying baby makes way more noise pollution haha

Ans 3:

suday ghai from DPS NOIDA, GAUTAM BUDDHA NAGAR
Class : Class 5

Ans 4:

Tanmay kaushal from ICSE, Mumbai
Class : Class 5

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