National Science Olympiad Forum By SOF Olympiad Trainer - Page 492
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Mohammad Ayaan from Delhi Public School Ghaziabad, Ghaziabad
Subject :NSO    Class : Class 4

Ans 1:

Abhinav from The Orchids international school, Bangalore
Class : Class 4
OPTION C

Ans 2:

AVANTIKA V from St.joseph of Cluny school , Puducherry
Class : Class 6
you are right

Ans 3:

Nishka Agarwal from NMAJS Mumbai, Mumbai
Class : Class 4
C

Ans 4:

Deveshi Sachdev from venkateshwar international school, New Delhi
Class : Class 6
the correct option is C

Ans 5:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 10
option C

Ans 6:

Sushree snehasikta behera from Mother's public school , Bhubaneswar
Class : Class 2
Answer C is the correct answer as incisors which are present in front most teeth help to bite the food. canines are present just after incisors and help to tear the food. premolars are present just after canines which help to crush the food. molars are present at the last which help us chew and grind the food.

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Shrikarthick from CS ACADEMY, ERODE
Subject :NSO    Class : Class 8

Ans 1:

from Bhandari Public School, KHANDWA
Class : Class 9
I don't understand the ANSWER as it also helps in mixing the nutrients uniformly in the soil.

Ans 2:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7

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Devansh from asn senior secondary school, delhi
Subject :NSO    Class : Class 3

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shreyash rawat from podar international school, pune
Subject :NSO    Class : Class 4

Ans 1:

Vidit Dubey from Gundecha Education Academy, Mumbai
Class : Class 7

Ans 2:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 10
option B

Ans 3:

Kavin from ISG , Muscat, Muscat
Class : Class 5
white you are rude for sure and it IS b

Ans 4:

Aananya Singh from DPS East, Bangalore
Class : Class 4

Ans 5:

Khanak Jha from Prime Academy, Mumbai
Class : Class 4
how do you know that Kavan knows the correct answer

Ans 6:

Riddhima Pandey from Chinmaya Vidyalaya, Bokaro Steel City
Class : Class 3

Ans 7:

Harshit from Montfort , Delhi
Class : Class 7
is is b how

Ans 8:

Aananya Singh from DPS East, Bangalore
Class : Class 4

Ans 9:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Kanav , if you know the answer then why have you posted it on the forum ?

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Anuj Sandesh Kanekar from Shrimant Maisaheb Bavadekar Academy, Kolhapur
Subject :NSO    Class : Class 6

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Pragun goel from Venkateshwar International School, Delhi
Subject :NSO    Class : Class 5

Ans 1:

Kashvi Rawat from Gear Innovative International School, Bengaluru
Class : Class 3
Answer is wrong, Souvik is saying 'avoid' while the answer is giving a different explanation .All Samrak, Souvik and Shivani are wrong.

Ans 2:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6
I think answer is wrong , use of tourniquet was preferred method until few years ago , it has been found it can damage blood flow and nerves

Ans 3:

Prerona Chatterjee from Delhi Public School North Kolkata, Kolkata
Class : Class 5
answer is ok.

Ans 4:

Reyansh Arora from The ShriRam Millenium, Noida
Class : Class 5

Ans 5:

Bhavya Agrawal from Cambridge Court High School , JAIPUR
Class : Class 8

Ans 6:

ADRIJA SAHA from DPS RANIPUR, Haridwar
Class : Class 6
I think answer is wrong. Shivani is also right. Using a tourniquet prevents the poisoned blood from reaching the heart.

Ans 7:

Riya Gupta from Birla Divya Jyoti, Siliguri
Class : Class 8
OPTION OF ANSWERS ARE WRONG. SIMMI AND SAMRAT HAVE MADE WRONG STATEMENT

Ans 8:

Hari Govind from Delhi Public School Chandigarh , Chandigarh
Class : Class 6
answer is wrong because if we apply tourniquet it may damage the nerves. the poison will remain its place but it may kill all the cells there

Ans 9:

Prisha Shah from Euroschool Airoli, Mumbai
Class : Class 6
the options are wrong...... even the explaination is wrong

Ans 10:

RISHABH SAHOO from DAV PUBLIC SCHOOL UNIT 8 BHUBANESWAR, BHUBANESWAR
Class : Class 7
Answer is wrong

Ans 11:

Rajrupa and Aparupa from Oxford cbse, bangalore
Class : Class 5
answer is wrong it should be c

Ans 12:

harry potter from Hogwarts school of witchcraft and wizardry , london
Class : Class 5
souvik is saying 'avoid giving water to the person in case of poisoning so the poison does not spread in the body. and tying torniquet just above the wound will spread the poison more. so, the answer should be C

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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 3

Ans 1:

Iraj Singh from DPS Megacity, Kolkata
Class : Class 9
The correct answer is C.

Ans 2:

Advait Apte from SSRVM, Pune
Class : Class 4

Ans 3:

Daksh Singh from Sanskrit School Undri , PUNE
Class : Class 3
your answer is right

Ans 4:

Havi Jain from GEMS modern academy, Gurgaon
Class : Class 8
C

Ans 5:

Daksh Singh from Sanskrit School Undri , PUNE
Class : Class 3
The correct answer is C

Ans 6:

Naisha Gupta from DPS School, Khajaguda, Hyderabad
Class : Class 3
online document so C

Ans 7:

Advait Apte from SSRVM, Pune
Class : Class 4

Ans 8:

Naisha Gupta from DPS School, Khajaguda, Hyderabad
Class : Class 3

Ans 9:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD
Class : Class 3
C

Ans 10:

Avyukta Saraswat from St Francis School , Greater noida west
Class : Class 3
how can we send parcels on e-mail

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SATYAM SATAPATHY from ODM PUBLIC SCHOOL BHUBANESWAR, BHUBANESWAR
Subject :NSO    Class : Class 7

Ans 1:

Pranav Prakash from SSSVV GAIL Vijaipur, Guna
Class : Class 9
Apropos to the question the mass of the car has a role in the momentum of the car, as Momentum=mv ,therefore option 'C' should be the correct answer.

Ans 2:

Raavi from DPS, Ranchi
Class : Class 8
c is the correct answer and solution is also given in favour of option c. but answer is b

Ans 3:

ALICE from Delhi Public School, UDAIPUR
Class : Class 9
No b is only

Ans 4:

TRIYA SOUMIK NATH from SYMBIOSIS PRIMARY SCHOOL, PUNE
Class : Class 6
Though it looks like mass has no role to play in braking distance, actually coeff of friction (COF) between tyre and road surface has inverse relationship with braking distance. COF depends on normal force due to weight of vehicle and therefore indirectly mass plays a role on braking distance. The correct answer should be C

Ans 5:

Soham Dighe from DAV Boys Senior Secondary School Gopalapuram Chennai, Chennai
Class : Class 8
C should be the correct answer. Same has been explained in the solution also.

Ans 6:

Anu Aarna Jagadeesan from Don Bosco School of Excellence, Chennai
Class : Class 5

Ans 7:

ALICE from Delhi Public School, UDAIPUR
Class : Class 9
Yes

Ans 8:

ALICE from Delhi Public School, UDAIPUR
Class : Class 9

Ans 9:

Sargah Surya from bgsnps, Bengaluru
Class : Class 4
C is the correct answer. Force is applied to stop the vehicle. The formulae of force is mass * acceleration. Acceleration is final velocity - initial velocity by time. F= M*{(v-u)/t} and its kinetically equation is F=M *[v square - u square/ 2 * distance]. Which ever formula for force has been taken MASS is important. So clearly MASS HAS A ROLE TO PLAY. hence the answer must be C

Ans 10:

Jeevika from St Marys , Titardi , Udaipur
Class : Class 7
if you read the solution properly it is quite clear that the answer is b

Ans 11:

ALICE from Delhi Public School, UDAIPUR
Class : Class 9
C only

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Anshuman D from MVM, Hyderabad
Subject :NSO    Class : Class 7

Ans 1:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
The leaves should be destarched first, so that there is no presence of starch prior to the experiment in any of the leaves. In that manner, the experiment will be more clear. Therefore, Option A is also a potential answer.

Ans 2:

Karan Oberoi from Amanora School, Pune
Class : Class 8
Destarching of leaf is a more effective way so option A should be correct

Ans 3:

Anish Ranjan Senapati from V S VIDYALAYA, KORAPUT
Class : Class 5

Ans 4:

KHYATI LAKHCHAURA from MVN, FARIDABAD
Class : Class 7
it should be destarched first then keep the setup in sunlight because if we will directly test the presence of starch both the leaves will show blue -black color as there will be starch already present in both of them. So the correct answer should be OPTION A

Ans 5:

priyanka from kendriya vidalaya kathmandu, JHAJJAR
Class : Class 8
option b

Ans 6:

priyanka from kendriya vidalaya kathmandu, JHAJJAR
Class : Class 8
option b

Ans 7:

Rohan A Gowda from Jnana Sagara International Public School, Channarayapatna
Class : Class 7
The plant should be destarched first and then used for the experiment To accurately test for the presence of starch in leaves X and Y.

Ans 8:

kartick Somasundaram from san academy, chennai
Class : Class 1
option B

Ans 9:

Derek from Arsha vidya Mandir, Chennai
Class : Class 7
It should be destarched first

Ans 10:

priyanka from kendriya vidalaya kathmandu, JHAJJAR
Class : Class 8
option b

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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 3

Ans 1:

Yatindra G from SBOA, Chennai
Class : Class 4
B!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 2:

Haris from Deens academy , Banglore
Class : Class 5
b

Ans 3:

Haris from Deens academy , Banglore
Class : Class 5
all the questions answer is b

Ans 4:

SRIRAM SRINIVASAN PAKU from KENDRIYA VIDHALAYA ASHOK NAGAR, CHENNAI
Class : Class 6

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