National Science Olympiad Forum By SOF Olympiad Trainer - Page 589
  1. Home
  2. /  Forum

User Forum

Ask Your Question
sai ramakrishna GUDIMETLA  from AMM MATRICULATION HIGHER SECONDARY SCHOOL, Chennai
Subject :NSO    Class : Class 5

Ans 1:

Kashvi Sharma from Jankidevi Public School , Dausa
Class : Class 9
The answer is option A..............

Ans 2:

Kashvi Sharma from Jankidevi Public School , Dausa
Class : Class 9
The answer is option A..............

Post Your Answer

sai ramakrishna GUDIMETLA  from AMM MATRICULATION HIGHER SECONDARY SCHOOL, Chennai
Subject :NSO    Class : Class 5

Rohan's meal contains sufficient amounts of milk, egg, rice, chappati and even fish. But, still he complains of indigestion and constipation. doctor advised him to increase intake of green leafy vegetables like cabbage, spinach, corn, fruits like banana, orange and also drink more water. How would this help him to improve his condition?

ARoughage in fruits and green vegetables would provide him more energy to tolerate problems of indigestion and constipation.
BRoughage present in fruits and green leafy vegetables and water would help him to get rid of undigested food
CGreen leafy vegetables and fruits would make his bones and muscles strong and he would be able to digest food easily.
DDrinking more water will reduce digestion and absorption of food, and thus it will pass out easily as faeces.

Post Your Answer

Aakarshak Swaraj from Podar international school , Surat , Surat
Subject :NSO    Class : Class 8

The given diagram shows many sperms near an egg. Which of the following statements about reproduction in animals are incorrect?

i Sperms are produced by male animals.
ii Usually, one egg is fertilized by many sperms.
iii After fertilization, the egg will grow and develop into young animal.
iv Fertilization always takes place while the egg is still inside the body of the female animals.

A i only
B ii and iv
C iii and iv
D i, ii and iii


i think the answer of this question is wrong.

Ans 1:

Aakarshak Swaraj from Podar international school , Surat , Surat
Class : Class 7
but how the answer is option(b).Please explain

Ans 2:

Ethel shiju from National Public School Indiranagar, Bangalore
Class : Class 9
Option b

Post Your Answer

Anaadya from Arsha Vidya Mandir, Chennai
Subject :NSO    Class : Class 3

Ans 1:

Sanyam Gupta from DPS Noida, Noida
Class : Class 3
I am Sanyam Gupta This Question was very Interesting THANK YOU $$

Ans 2:

SS from meridian, hyderabad
Class : Class 5
stop sof you are always wrongno one is corecct everyone may use you but you are wrong wong wrong

Ans 3:

Goklani Harsh Hemantkumar from Seven Steps School, Surat
Class : Class 8
please provide justification

Ans 4:

Aayan Choudhry from Yuvabharthi international school, Singapore
Class : Class 3
Anyone knows how s the solution determined?

Ans 5:

Vivaan Purwar from dpsnoida, Noida
Class : Class 5
tough question

Ans 6:

Ashwak from Cambridge, Jalandhar
Class : Class 8
The answer is C because the rule is followed -[ 7 - 6 ] [ 9 - 6 ] = 1 3 = 4[ 8 - 5 ] [ 9 - 2 ] = 3 7 = 10 [ 6 - 3 ] [ 5 - 4 ] = 3 1 = 4

Ans 7:

saisavit from sri kumaran ps, bangalore
Class : Class 7
tough

Ans 8:

Yajat Mohapatra from DAV SCB Medical Public School, CUTTACK
Class : Class 3

Post Your Answer

Sumit G from Greenwood High International, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Ojas Patil from Vikhe Patil Memorial School Pune, Pune
Class : Class 7
d

Post Your Answer

RONIK PATRA from RAHUL INTERNATIONAL SCHOOL, PALGHAR MUMBAI
Subject :NSO    Class : Class 3

Ans 1:

Kashika Goel from DPS Noida, Noida
Class : Class 6

Ans 2:

Pankaj Rajput from RBK GLOBAL SCHOOL, THANE
Class : Class 4
NOOOOOOOOOOO!!!!!!!!!!!!!!!!!!!!!!!! i DONT BElive

Ans 3:

AARAVPRADEEP SAHU from PADMASESHADRI BALBHAVAN SENIOR SECONDARY SCHOOL, CHENNAI
Class : Class 3
corrwct yeeeee!!

Ans 4:

Shruti from ,
Class : Class 1
it is right Soumyajit

Ans 5:

Avik Arya from Trileaves Global school , Chennai
Class : Class 3
The option is D correct

Ans 6:

MAYANK from Jain Public School, REWARI
Class : Class 9
d

Ans 7:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 7
Pankaj, why are you telling no . It should option 'd'.

Ans 8:

Nirvi Pal from jasudben ML School, mumbai
Class : Class 5

Ans 9:

anu from The Amaatra Academy, Bengaluru
Class : Class 5
class:3the answer is D

Ans 10:

AARAVPRADEEP SAHU from PADMASESHADRI BALBHAVAN SENIOR SECONDARY SCHOOL, CHENNAI
Class : Class 3

Post Your Answer

Shreya Mangesh Patwardhan from City International school Satara road branch, PUNE
Subject :NSO    Class : Class 8

Ans 1:

Ethel shiju from National Public School Indiranagar, Bangalore
Class : Class 9
Option a is wrong because yeast does not convert sugar into lactic acid.

Ans 2:

Pushkar Sonnekar from Ryan International School, Mumbai, Vasai East
Class : Class 8
I think that option A and C should be correct. Since option A talks about fermentation occuring which could be true considering that yeast is put into warm sugar solution. Option C is also correct since we know that one of the end products of fermentation is CO2 and lime water turns milky white when it is combined with carbon-dioxide.

Ans 3:

B Krithika sulochana from Devi Academy senior secondary school, Chennai
Class : Class 8
Option C is the correct answer because yeast causes fermentation .Fermentation is an anaerobic process. In this process yeast converts sugar into alcohol and carbon dioxide. Lime water turns milky indicating the presence of carbon dioxide.

Ans 4:

ARAVINDAN MANIKANDAN from NPS INternational, Singapore
Class : Class 8
Then option A should also be correct as it talks about fermentation

Ans 5:

Arnav Gangwar from DPS NOIDA, GAUTAM BUDH NAGAR
Class : Class 8
answer cant be A since during fermentation of sugar alcohol is produced and not lactic acid

Ans 6:

Kabir Mendiratta from NCS , Kochi
Class : Class 8

Post Your Answer

tanishka Bondhare from Saraswati international school , Hingoli
Subject :NSO    Class : Class 8

Ans 1:

Zainab from St. Mary's Convent Inter College, Lucknow
Class : Class 8
A

Ans 2:

Ethel shiju from National Public School Indiranagar, Bangalore
Class : Class 9
A vector diagram is a diagram which shows both direction and magnitude....hope you found it helpful!

Post Your Answer

Swarnava Pal from Vivekananda Mission School, Haldia
Subject :NSO    Class : Class 3

Ans 1:

vighneshwar from study hall, Lucknow
Class : Class 5
a

Ans 2:

Sidharth from Vibgyor , Navi Mumbai
Class : Class 3

Ans 3:

Saachi Bhalgat from Vibgyor Yerwada, Pune
Class : Class 2

Ans 4:

Harshil Jain from DPS, Bangalore
Class : Class 3
The answer should be (A) but, why have they said that (D) should be the answer .

Ans 5:

Darshil Rath from Sai International School , Bhubaneswar
Class : Class 7
Ans-d because if it is not scarce the house will flow away.

Ans 6:

Mohinder singh from Sacred heart convent school, Ludhiana
Class : Class 7
My answer was D but it changed itself as C

Ans 7:

Jasneet Bindra from Raghubir Singh Junior Modern School, New Delhi
Class : Class 3
fgdgcbcbc vccdhdhdgvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvbcbdfdhgdhvghvbvhfhhfudfdvbccjcccbcbcbdhdhssjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjssssssssssssssssssssssssssssssssssss

Post Your Answer

anwesha from v s n, midnapore
Subject :NSO    Class : Class 8

Read the given statements and select the correct option.
Statement-1 : A horse has to pull a cart harder during the first few steps of his motion.
Statement-2 : The first steps are always difficult.

A Both statements-1 and 2 are true and statement-2 is the correct explanation of statement-1.
B Both statements-1 and 2 are true but statement-2 is not the correct explanation of statement-1.
C Statement-1 is true and statement-2 is false.
D Both statements-1 and 2 are false.


Ans 1:

Chaitanya L K from SKCHEC, bangalore
Class : Class 8
Yes A is correct

Ans 2:

Abhinav from nesss, vadodara
Class : Class 10

Ans 3:

Shreya Mangesh Patwardhan from City International school Satara road branch, PUNE
Class : Class 10
as static friction is always more than sliding friction and horse experiences static friction during its first steps.therefore option [A] is correct.

Post Your Answer