National Science Olympiad Forum By SOF Olympiad Trainer - Page 268
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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:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

Monika Bhattacharya from the lexicon international school kalyaninagar, pune
Class : Class 5
yes

Ans 7:

from GIIS,
Class : Class 4
Me too

Ans 8:

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

Ans 9:

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

Ans 10:

Anantjit Chander from The Modern School, Sector 85, Greater Faridabad, Faridabad
Class : Class 8
It is confusing to me.....

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

Ans 1:

Rayansh Mishra from VIBGYOR HIGH, Pune
Class : Class 7
Same - C got selected , I choose B

Ans 2:

Rayansh Mishra from VIBGYOR HIGH, Pune
Class : Class 7
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 3:

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

Ans 4:

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

Ans 5:

from GIIS,
Class : Class 4
b is the answer

Ans 6:

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

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

Ans 1:

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

Ans 2:

Pallav Agarwal from DLF PUBLIC SCHOOL SAHIBABAD, Ghaziabad
Class : Class 8
c is correct answer to this ques!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 3:

Shivangi Shivu Singh from Pawar Public School Chandivili , Mumbai
Class : Class 6

Ans 4:

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

Ans 5:

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 6:

Kiyara Khanna from NPSI, SINGAPORE
Class : Class 5

Ans 7:

Tanmay kaushal from ICSE, Mumbai
Class : Class 5

Ans 8:

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

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

Ans 1:

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

Ans 2:

vedant from TSRS Aravalli, Gurgaon
Class : Class 5

Ans 3:

vedant from TSRS Aravalli, Gurgaon
Class : Class 5
bbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 4:

vedant from TSRS Aravalli, Gurgaon
Class : Class 5

Ans 5:

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

Ans 6:

Ryan from YBIS , SINGAPORE
Class : Class 5

Ans 7:

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

Ans 8:

KANAK PRASAD from Edify School , Tirupati
Class : Class 4

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

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A


Ans 2:

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 .

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Jyothi Sri from Ramanath Secondary School, Visakhapatnam
Subject :NSO    Class : Class 10

The diagram shows a model of a nephron and its associated blood vessels.
image
This model has been criticised for being a poor representation of a nephron. Which of the following statements explain(s) this?
1. The rubber tubing at B is not split up into numerous branches like the capillary network of the glomerulus.
2. The rubber tubing at B should be continuous and not contain small pores.
3. The stem of the thistle funnel (E) is not coiled to represent the convoluted tubules of the nephron.

A 1 only
B 1 and 3 only
C 2 and 3 only
D 1, 2 and 3


I am not able to understand this question......it Is really confusing.

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SANTOS from RBGS, chennai
Subject :NSO    Class : Class 8

Refer to the given figure and select the incorrect statement(s).

(i) The part labelled P is found in plant cell only.
(ii) The part labelled Q is cell wall, which provides rigidity to a plant cell.
(iii) The part labelled R is the controlling centre.
(iv) The part labelled R gets its shape from part labelled P.

A (iv) only
B (i) and (iv) only
C (ii) and (iii) only
D (iii) only


vacuoles are also present in animal cells in small size can youexplain your answer

Ans 1:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Image unclearSolution not givenWhat's going on, SOF?Please PLEASE RECTIFY THIS!

Ans 2:

Shaurya from Vibgyor High , Pune
Class : Class 8
What are the names of the parts labelled as P, Q, R,

Ans 3:

Aditya Joel Tauro from SAINT JOSEPHS BOYS HIGH SCHOOL, BANGALORE
Class : Class 8

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