National Science Olympiad Forum By SOF Olympiad Trainer - Page 606
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ALBERT BERKMANS from ZYDUS SCHOOL FOR EXCELLENCE, AHMEDABAD
Subject :NSO    Class : Class 2

Ans 1:

Vishnu from sjps, Chennai
Class : Class 6
sir

Ans 2:

Vishnu from sjps, Chennai
Class : Class 6

Ans 3:

Arjun Gourineni from CHIREC International School, Hyderabad
Class : Class 7
No

Ans 4:

Vishnu from sjps, Chennai
Class : Class 6
What is the answer ?

Ans 5:

Vishnu from sjps, Chennai
Class : Class 6
don't know the answer .

Ans 6:

Vishnu from sjps, Chennai
Class : Class 6

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RISHIT GOEL from Ryan International School , Gurgaon
Subject :NSO    Class : Class 5

Monty fully filled a glass bottle with water, put a stopper on it and placed it upright in the freezer overnight. When he looked at it in the morning, the stopper was out of the bottle and a column of ice had emerged through the opening of the bottle.
Which one of the following is the best explanation for what Monty had observed?

A The bottle had contracted when it was put in the freezer and the water could no longer fit into it.
B Extra water condensed from the air in the freezer and then froze to form the column of ice.
C The bottle and stopper had contracted, allowing the water to pour out and form the ice column.
D The volume of water had increased when the water froze, forcing the stopper out of the bottle and forming the column of ice.


Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 8
Marigank Roy water increases its volume on cooling .

Ans 2:

Aadyant Gupta from Lotus Valley International School, NOIDA
Class : Class 9

Ans 3:

Manasvi Nagpal from blooming dales international school, sri ganganagar
Class : Class 5
ITS CORRECT D

Ans 4:

Mrigank Roy from Delhi Public School Ghaziabad, Ghaziabad
Class : Class 9
Option is wrong! Water will contract on freezing

Ans 5:

AARNA GOEL from UPTON SCHOOL, ENGLAND
Class : Class 5
nice question I guess. Guys I afraid from Saipriya. Guys don't listen to her she will fail and she not the teacher.she is evilGuys Guys help me I am scard from Saipriya.

Ans 6:

Mrigank Roy from Delhi Public School Ghaziabad, Ghaziabad
Class : Class 9

Ans 7:

NOYONIKA BOSE SENGUPTA from Jamnabai Narsee School, Mumbai
Class : Class 6

Ans 8:

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

Ans 9:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
5/5!

Ans 10:

sujata patel from Podar International, Pune
Class : Class 6
NOT ABLE TO UNDERSTAND THE SENTENCES

Ans 11:

Aadyant Gupta from Lotus Valley International School, NOIDA
Class : Class 9
Wrong option.a

Ans 12:

Ayush Yadav from Salwan Public School, Gurgaon
Class : Class 6

Ans 13:

Saipriya from Sankara, Chennai
Class : Class 8
Aadyant gupta are u a teacher shut up your mouth and dont talk after the teacher , dont do such rubbish things u have to read science super arnav raj sharma mrigank roy shut up are u the teacher two mads why are u reading science u fool read and understand the solluion

Ans 14:

Brinda Chakraverty from DPS Noida, Noida
Class : Class 5
Very tricky question. Good job

Ans 15:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8

Ans 16:

Monika Bhattacharya from the lexicon international school kalyaninagar, pune
Class : Class 5
Quite tricky quesstion.

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Mannat Verma from Vivek High School , Chandigarh
Subject :NSO    Class : Class 4

Ans 1:

Prathamesh from Gopals Garden High School, Mumbai
Class : Class 4
A. is the correct answer.(mercury.)

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Mannat Verma from Vivek High School , Chandigarh
Subject :NSO    Class : Class 4

Ans 1:

Sarthak Gupta from DPS, Haryana
Class : Class 4
Answer is c as protein is body building food, rice is rich in carbohydrates

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NISHIT KUMAR from DLF PUBLIC SCHOOL, sahibabad
Subject :NSO    Class : Class 5

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Rakshit Mishra from National Public School, Kalkere, Bengaluru
Subject :NSO    Class : Class 3

Ans 1:

Olivia from The Amaatra Academy, Bengaluru
Class : Class 4
do b

Ans 2:

PV Nandakishore from CS academy, Coimbatore
Class : Class 3
B

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Jordan Cole from NCS Arakkonam, Arakkonam
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

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Nikkita from Euroschool Whitefield, Bengaluru
Subject :NSO    Class : Class 6

Given diagram is a torch containing cells. The torch is not glowing when the switch is ON. Now, it is opened to know the reasons. Which of the following statements are correct regarding the reasons?

(i) Bulb of the torch is fused.
(ii) Cells are not connected properly.
(iii) The metal parts of the torch do not make proper contact with the cell.

A Only (i) and (ii)
B Only (ii) and (iii)
C Only (i) and (iii)
D All (i), (ii) and (iii)


How is d the correct answer???

Ans 1:

Babbellapati Rohan Sashank from KC High, Chennai
Class : Class 6

Ans 2:

Navya Singh from Hutchings School Talegaon , Pune
Class : Class 6

Ans 3:

RUDRAKSH BISWAS from MAYOOR PRIVATE SCHOOL, ABU DHABI
Class : Class 6
shouldn't the answer be B

Ans 4:

A S Neeraj from K V 2, Chennai
Class : Class 6

Ans 5:

Atul Sanjeev from Indian School Al Ghubra, Muscat
Class : Class 9

Ans 6:

khushi Joshi from Svkm , Mumbai
Class : Class 10

Ans 7:

Ananya from GIIS, Bangalore
Class : Class 6
Why can't option A be the answer?

Ans 8:

Satya Sai Lohith Vootla from Chouifat International School Ruwais, Abu Dhabi
Class : Class 8
Class :

Ans 9:

KEERTHANA SHIBU from INDIAN SCHOOL GHOUBRA, Oman
Class : Class 7
oh hi atul sanjeev

Ans 10:

Videh Jain from Bluebells School International, Delhi
Class : Class 6
ddd ssx

Ans 11:

Advik from DPS Patna, Patna
Class : Class 4

Ans 12:

Pranjal Chaudhari from St Aloysius Convent High School, Bhusawal
Class : Class 6

Ans 13:

Pranjal Chaudhari from St Aloysius Convent High School, Bhusawal
Class : Class 6

Ans 14:

arin chaitanya from the shri ram school, New Delhi
Class : Class 7
the answer should be a

Ans 15:

M.S.PRABANJAN from S.B.O.A SCHOOL AND JUNIOR COLLEGE,CHENNAI, Chennai
Class : Class 3

Ans 16:

Veda Dua from Delhi Public School, R. K. Puram, New Delhi
Class : Class 10

Ans 17:

Aarnav Grover from Anand Niketan Shilaj, Ahmedabad
Class : Class 9
um the figure shows that only the negative part of the cell gives energy not a positive side so shouldn't the answer be only 1 and 2

Ans 18:

Veda Dua from Delhi Public School, R. K. Puram, New Delhi
Class : Class 10

Ans 19:

Tamrashi Pani from National Public School, Bangalore
Class : Class 8

Ans 20:

Advik from DPS Patna, Patna
Class : Class 4

Ans 21:

harry potter from hogwarts, hogsmeade
Class : Class 6

Ans 22:

Ritabrata Das from OPJS, Angul
Class : Class 7

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Nikkita from Euroschool Whitefield, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

ATHARV RAHUL MAHAJAN from ST. STEPHENS SCHOOL CHANDIGARH, SAS NAGAR
Class : Class 6

Ans 2:

Vidwat Amal from Podar International School , Anand
Class : Class 8
why A is correct and not incorrect because a vehicle need not go in rectilinear path on a straight road it can go zigzag as well

Ans 3:

Shikhar Mallick from Holy Cross School, Agartala
Class : Class 7

Ans 4:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 9
well this question sound confusing to alli will go with the child from phoenix schoolbecause a is correct because as mentioned in synopsis of this chapter that example of rectlinear motion is a car driving on a straight roadbut option b shoul also be the option as the kelvin is the si unit of tempreature

Ans 5:

Vidwat Amal from Podar International School , Anand
Class : Class 8
A, B, D are correct....incorrect is C. Because forearm is the length of the arm between elbow joint and wrist joint but the cubit is length from tip of elbow to the tip of the middle finger. so forearm length is smaller than the cubit. So answer is option C

Ans 6:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9

Ans 7:

sudeep from DPS, Bangalore
Class : Class 7
kelvin is the SI unit of temperature so option D is correct and A is also correct because rectilinear motion is motion in a straight line like a car moving on a straight road

Ans 8:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
A option is the correct answer

Ans 9:

Ankush Ghosh from DPS, Doha
Class : Class 10
Kelvin is the SI unit of temperatureSo both A and D are in correct

Ans 10:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
D is only correct and not A. So, A is the correct answer

Ans 11:

Dushyant Singh from Shree Ram Centenial School, Indore
Class : Class 9

Ans 12:

Satvik Pattanaik from GreenwoodHigh, bangalore
Class : Class 6

Ans 13:

Harsh Shukla from DPS Bangalore East, Bengaluru
Class : Class 9
question is wrong . the question should be which of the following are correct ?

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samrudh from Hus, Chennai
Subject :NSO    Class : Class 4

Ans 1:

sonakshi singh from Delhi Public School Neelbadh , Bhopal
Class : Class 6
airindia means option a

Ans 2:

sonakshi singh from Delhi Public School Neelbadh , Bhopal
Class : Class 6
airindia means option a

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