National Science Olympiad Forum By SOF Olympiad Trainer - Page 273
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Sourish Mahakul from Delhi Public School Electronic City, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 8
The answer is C

Ans 2:

Enrique sen from Delhi public school panvel, Navi mumbai
Class : Class 5
Answer is option c

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Smectic Priyadarshini from Kendriya Vidyalaya, Bhubaneswar
Subject :NSO    Class : Class 6

Ans 1:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Answer is A.because it is nitrogen and used in fertilizer.In nitrogen fixation the nitrogen gas is used to produce protien.

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Ritwika Biswas from KV no 1 , Goa
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A


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anika from St Joseph sen sec school Mahoba, Kulpahar
Subject :NSO    Class : Class 6

Sudha took lemon juice in two flasks. She put salt in flask I and washing soda in flask II. She observed lots of bubbles in flask II but nothing in flask I. What could be the reason for this?


A In flask I, a chemical change takes place.
B In flask II, a chemical change takes place and bubbles of carbon dioxide are seen.
C In flask II, a physical change takes place producing lots of bubbles.
D In flask I, salt reacts with lemon juice and forms a new compound.


IF IT BUBBLES ARE BEING PRODUCED THEN WHY IS IT SURE THAT IT IS IRREVERSIBLE AND HOW DO WE KNOW THAT THE BUBBLES ARE OF Co2

Ans 1:

Ritam Das from BGKV, Kolkata
Class : Class 6

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Amrik Pal from Kendriya Vidyalaya DRDO, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7

Ans 2:

Ishir Jha from Gyan Ganga Global Academy, Rosera
Class : Class 8
Ashoka Tree also has compound leaves.

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Pratham Dave from GNS, Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Rimi from TLISK, pune
Class : Class 9
yes

Ans 2:

Ruhaan Singh from Gopalan International School, Bangalore
Class : Class 5
too easy

Ans 3:

SIDDHARTH KUMAR CHATTERJEE from NAVY CHILDREN SCHOOL , CHICALIM
Class : Class 7
Me too!

Ans 4:

Rasha Ranjan from DPS NOIDA , Noida
Class : Class 5
me too!

Ans 5:

from GIIS,
Class : Class 4
Me too

Ans 6:

Rishit Garg from Bhavan s B P Vidya Mandir , Nagpur
Class : Class 9
me to

Ans 7:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Anyone completed with full marks???

Ans 8:

Anantjit Chander from The Modern School, Sector 85, Greater Faridabad, Faridabad
Class : Class 9
It is confusing to me.....

Ans 9:

SHASHWAT YADAV from DELHI PUBLIC SCHOOL, BHOPAL
Class : Class 7
I got great grades.

Ans 10:

Ashwak from Cambridge, Jalandhar
Class : Class 8
Biju Pappachan , I completed the test with full marks

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Pratham Dave from GNS, Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Ruhaan Singh from Gopalan International School, Bangalore
Class : Class 5
b

Ans 2:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
I had done B. Wrong answer selected

Ans 3:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 8
Same - C got selected , I choose B

Ans 4:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5
Answer is D i got it wrong to

Ans 5:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 8
I am sad with this yghzgsdz comment everyone is giving, this is a website. Sometimes IT CAN GO WRONG AND Satvik Agarwal pls put your complain in report an error. shuit down

Ans 6:

from GIIS,
Class : Class 4
b is the answer

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Maanvik Srivastava from Cornerstone, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Mihir Baxi from Vikhe Patil Memorial School, Pune
Class : Class 5
Since Carbon dioxide is a greenhouse gas and causes global warming, the correct ans. will be C.

Ans 2:

Tanmay kaushal from ICSE, Mumbai
Class : Class 5

Ans 3:

Maanvik Srivastava from Cornerstone, Hyderabad
Class : Class 5
SINCE CARBON DIOXIDE CAUSES GLOBAL WARMING , THE CORRECT ANSWER IS OPTION C.

Ans 4:

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

Ans 5:

Mihir Baxi from Vikhe Patil Memorial School, Pune
Class : Class 5

Ans 6:

Shivangi Shivu Singh from Pawar Public School Chandivili , Mumbai
Class : Class 7

Ans 7:

Pallav Agarwal from DLF PUBLIC SCHOOL SAHIBABAD, Ghaziabad
Class : Class 9
c is correct answer to this ques!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 8:

Kiyara Khanna from NPSI, SINGAPORE
Class : Class 5

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Shivansh Mittal from Apeejay School, Faridabad
Subject :NSO    Class : Class 4

Ans 1:

vedant from TSRS Aravalli, Gurgaon
Class : Class 5

Ans 2:

Ryan from YBIS , SINGAPORE
Class : Class 5

Ans 3:

Charvik Kalantri from EuroSchool Wakad, Pune
Class : Class 4
the correct option is no.d

Ans 4:

vedant from TSRS Aravalli, Gurgaon
Class : Class 5

Ans 5:

KANAK PRASAD from Kendriya Vidhyalaya IIT Tirupati, Tirupati
Class : Class 5

Ans 6:

vedant from TSRS Aravalli, Gurgaon
Class : Class 5
bbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 7:

jathin from national public school chikkabanavara, banglore
Class : Class 4
the correct answer is D

Ans 8:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA
Class : Class 9

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Adhrit Maddulapalli from CHSV, Chennai
Subject :NSO    Class : Class 5

Ans 1:

rethish from Veltech, Avadi
Class : Class 3
The alphabetical arrangement of given words is Burger, Bultcher ,butler,Butter, Butterfly So, the middle word is Butler .

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A


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