National Science Olympiad Forum By SOF Olympiad Trainer - Page 534
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Sargah Surya from bgsnps, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

arnav from Dps noida, Delhi
Class : Class 8
a

Ans 2:

Admin fly from Ddssxxx, Ax
Class : Class 1

Ans 3:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai
Class : Class 9

Ans 4:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 9

Ans 5:

Shriya Sreekrishna from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi
Class : Class 7

Ans 6:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Sachin is being tested for his eyesight by an optician.Now, let’s read the given information carefully, and find out the position of Sachin.Sachin sits 3 m in front of a plane mirror, and looks at the image of the chart of letters, which seems to be 7 m in front of him.This means the distance between the mirror and the image of the chart is (7 m – 3 m = 4 m). If the image of the chart is 4 m behind the mirror, then the actual chart is placed 4 m in front of mirror.Now the chart is placed 4 m in front of the mirror, and Sachin is sitting 3 m in front of the mirror. That means the chart is placed (4 m – 3 m = 1 m) behind Sachin. Hence, the right answer is Option A.

Ans 7:

Admin fly from Ddssxxx, Ax
Class : Class 1
A

Ans 8:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Sachin is being tested for his eyesight by an optician.Now, let’s read the given information carefully, and find out the position of Sachin.Sachin sits 3 m in front of a plane mirror, and looks at the image of the chart of letters, which seems to be 7 m in front of him.This means the distance between the mirror and the image of the chart is (7 m – 3 m = 4 m). If the image of the chart is 4 m behind the mirror, then the actual chart is placed 4 m in front of mirror.Now the chart is placed 4 m in front of the mirror, and Sachin is sitting 3 m in front of the mirror. That means the chart is placed (4 m – 3 m = 1 m) behind Sachin. Hence, the right answer is Option A.

Ans 9:

Nandan Makineni from VIBGYOR HIGH, Bangalore
Class : Class 6

Ans 10:

Rahil from Delhi Public School Faridabad, Faridabad
Class : Class 7
A as image is as far behind the mirror as Object is in front of it. In this case Sachin is 3 m in front of the mirror and the object seems to be seven meters ahead. As Sachin is 3 m in front of the mirror that means object is (7-3) = 4 m behind the mirror. As image is as far behind the mirror as Object is in front of it, It means chart is 4 meters in front of the mirror. ( 4 - 3 ) = 1 m behind Sachin as Sachin is also in front of the mirror. Hope that answers your question !

Ans 11:

Pragyan Srivastava from Manipal Public School, Lucknow
Class : Class 10
A

Ans 12:

Aarohi Srihari Torgal from V.V.S B.M Sri Educational Institutions , Mysure
Class : Class 6
A

Ans 13:

Ishir Jha from Gyan Ganga Global Academy, Rosera
Class : Class 8

Ans 14:

ttraj from KV IIT, Chennai, Chennai
Class : Class 3
A

Post Your Answer

Deeptajit Roy from Gems Modern Academy, Dubai
Subject :NSO    Class : Class 5

Ans 1:

Manasvi Nagpal from blooming dales international school, sri ganganagar
Class : Class 5
yes ,you are rightans is c

Ans 2:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10

Ans 3:

Achyut Prasad from Prabhujee English Medium School, Bhubaneswar
Class : Class 5
Ans is C potato is stem and sugar cane also stem

Ans 4:

Dhruv Osekar from Mitra Academy, Bangalore
Class : Class 5

Post Your Answer

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

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9

Ans 2:

Kashika Goel from DPS Noida, Noida
Class : Class 7
B is not correct as it is gravity that causes objects to fall on the ground

Ans 3:

Raghav Agarwal from Dinobli School, jharia
Class : Class 4
How is it C

Ans 4:

Prayaan handel from Billabong high international school, Bhopal
Class : Class 4
how about B

Ans 5:

Ivan Tyagi from Chirec International School , Hyderabad
Class : Class 8

Ans 6:

Kashika Goel from DPS Noida, Noida
Class : Class 7
B is not correct as it is gravity that causes objects to fall on the ground

Ans 7:

Vineet Banode from New Horizon Scholars School, Pune
Class : Class 5
Yes how it can be C ?

Ans 8:

Kashika Goel from DPS Noida, Noida
Class : Class 7
frictional force is answer prevents from slipping

Post Your Answer

Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

Ans 1:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6
Please explain more nicely and Keanna thank you for explaining

Ans 2:

lavanya from bcm chd road, Ludhiana
Class : Class 5

Ans 3:

Shrihan Koley from Radiant International School , Patna
Class : Class 5
There is written on option D that Q could have three pair of wing but the question is wrong.There should be written two pair instead of three pair.Two pair is written on solution.

Ans 4:

Aarav sugla from Niraj International School , Secunderabad
Class : Class 5

Ans 5:

aurik mittal from mayor world school, jalandhar
Class : Class 5
questio is wrong

Ans 6:

Arjun120914 from St. Andrews world school, Ghaziabad
Class : Class 5

Ans 7:

Keanna from APG, MUMBAI
Class : Class 7
A. P could be cold-blooded animal whereas R could be warm-blooded animal. ----- Frog has backbone, lays eggs and is a cold-blooded animal. So, P can be a Frog. Humans have backbone and hair, and they are warm-blooded. So, R can be a Human Being. So, this statement is Correct.B. Q could be six-legged animal whereas R could be four-legged animal. ----- Spiders have six legs and they lay eggs. So, Q can be a Spider. Horses are four-legged animals. They have backbone and hair. So, R can be a Horse. So, this statement is Correct.C. R could breathe through lungs whereas S could breathe through spiracles. ----- Dogs breathe through lungs, they have backbone and hair. So, R could be a Dog. Cockroaches breathe through spiracles. They have backbone and lay eggs, but they have no hair. So, S can be a Cockroach. So, this statement is Incorrect.D. P could have a pair of wings whereas Q could have two pairs of wings. ----- Birds have a pair of wings. They have backbone and they lay eggs. So, P could be a Bird. Most insects have two pair of wings, and they lay eggs. So, Q could be an Insect. So, this statement is Correct.Hence, the right answer is Option C.

Ans 8:

kartikeya nangrani from the kalyani school, pune
Class : Class 4
Most off your questions are wrong

Ans 9:

Advait Kumar Mangalik from The S D Public School, Muzaffarnagar
Class : Class 4
Keanna you are a copycat

Ans 10:

Aadya Kawale from Podar International ICSE , Dombivli East
Class : Class 4
Hey, some spider species have six legs, usually out of India. And the whole explanation is wrong.

Ans 11:

Nirvaan Jain from Anand Niketan Satellite Campus, Ahmedabad
Class : Class 4
The option D. is wrong. It mentions 3 pairs of wings whereas it should be 2 pairs of wings.

Ans 12:

Archita Moi from The Newtown School, Kolkata
Class : Class 4
Oh my! thanks for solving my problem .

Ans 13:

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

Ans 14:

Om Adhatrao from Orchids International School, Thane
Class : Class 4
Thank you for the explanation

Ans 15:

Bharat Aggarwal from Kalyani school, Pune1
Class : Class 4
But no spider species have 6 legs

Ans 16:

Bharat Aggarwal from Kalyani school, Pune1
Class : Class 4
But no spider species have 6 legs

Post Your Answer

Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

Ans 1:

Tamojeet Sanyal from Don Bosco, Kolkata
Class : Class 2
please explain the reasoning

Ans 2:

AAYANSH from New horizon scholars school, Thane
Class : Class 10
kn

Ans 3:

AAYANSH from New horizon scholars school, Thane
Class : Class 10
kn

Ans 4:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
OMG!How confusing!How did the others do it!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 5:

Harsh Mahyavanshi from Lokhandwala Foundation School, Mumbai
Class : Class 4

Ans 6:

Aarvika Dansana from Mayoor School Noida, Gautam Buddha Nagar
Class : Class 4
The ans is A

Ans 7:

AAYANSH from New horizon scholars school, Thane
Class : Class 10
kn

Ans 8:

AAYANSH from New horizon scholars school, Thane
Class : Class 10
kn

Ans 9:

Krishika Madan Shanmugam from National Public School, Bangalore
Class : Class 5
ans is b

Ans 10:

AAYANSH from New horizon scholars school, Thane
Class : Class 10
kn

Ans 11:

Deveshi Sachdev from venkateshwar international school, New Delhi
Class : Class 6
I did it with a guess and got it right somehow!

Ans 12:

Rakshit Singh from DLF Public School, Ghaziabad
Class : Class 5

Ans 13:

Vansika Jasrapuria from Chatrabhuj Narsee School, Mumbai
Class : Class 4

Ans 14:

Aadya Kawale from Podar International ICSE , Dombivli East
Class : Class 4
Let’s study the given food-web carefully:The food-web is starting from P. So, P are plants (Producers). Q, T and U are eating these plants, so they are Herbivores (Primary Consumers). R are eating Q, and V are eating U, so they are Carnivores (Secondary Consumers). S are eating T as well as R

Ans 15:

AAYANSH from New horizon scholars school, Thane
Class : Class 10
kn

Ans 16:

AAYANSH from New horizon scholars school, Thane
Class : Class 10
wth

Post Your Answer

Advait talnikar from Dhruv Global School, Sangamner
Subject :NSO    Class : Class 6

Post Your Answer

Akshara Singh Virk from DPS , Sec 47, Gurgaon
Subject :NSO    Class : Class 3

Ans 1:

Aneesh Balaji from BVBARR school, Hyderabad
Class : Class 9
d

Ans 2:

Gunnika from MVN, Faridabad
Class : Class 3
is it option C ?

Ans 3:

Nishant Hazarika from Air Force School, Dibrugarh
Class : Class 3
Answer can be A also as Q can be duck and P can be penguin and both of them have webbed feet and penguins live in places like Antartica.

Ans 4:

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

Post Your Answer

Mani Gupta from Carmel Convent School, Faridabad
Subject :NSO    Class : Class 8

Ans 1:

Ani from Sav, Kolkata
Class : Class 9
B

Post Your Answer

Shruti Rajshree from NPS Indiranagar, Bengaluru
Subject :NSO    Class : Class 5

Ans 1:

Navya GUPTA from dps noida, Noida
Class : Class 3

Ans 2:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans is C because like humans, plants also sweat. This is called transpiration.

Ans 3:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6

Ans 4:

munish jindal from APJ school, Jalandhar
Class : Class 8

Ans 5:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5
SOF, Isnt the answer C?

Ans 6:

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

Ans 7:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5

Ans 8:

Pratham Dave from GNS, Bangalore
Class : Class 7
Why D?It should be option C .

Ans 9:

Ayushree Barman from Sri Sri Academy, Kolkata
Class : Class 6
Why will it be D? It should be C, because the Vaseline blocks the stomata of the leaves, and thus blocks the surface for transpiration, so water droplets will not appear on those leaves, but the uncovered leaves were not stained or covered with anything, so the transpiration process in those leaves should stay normal.

Ans 10:

Shreyan from Delhi Public School Bangalore East, Bangalore
Class : Class 5
isn't the answer c

Post Your Answer

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

Ans 1:

Pranathi from GIIS, Kuala Lumpur
Class : Class 7
D

Post Your Answer