National Science Olympiad Forum By SOF Olympiad Trainer - Page 696
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Mayank Gupta from Kulachi Hansraj Model School, New Delhi
Subject :NSO    Class : Class 7

Ans 1:

Antareep Mukherjee from New Horizon Public School, Bangalore
Class : Class 8

Ans 2:

thechampiondaksh from K R Mangalam World School, New Delhi
Class : Class 8
i think the answer is A as the process X is of radiation and process Y is convection and process Z is conduction . a medium is not required in radiation . convection takes place in fluids . that is why i think the answer is option A

Ans 3:

Midhuna from ABCD, Banglore
Class : Class 3
plz correct your answer

Ans 4:

thechampiondaksh from K R Mangalam World School, New Delhi
Class : Class 8
i think the answer is A as the process X is of radiation and process Y is convection and process Z is conduction . a medium is not required in radiation . convection takes place in fluids . that is why i think the answer is option A

Ans 5:

Rithvik from BVM Global, Chennai
Class : Class 9
yeah ans is a

Ans 6:

Antareep Mukherjee from New Horizon Public School, Bangalore
Class : Class 8

Post Your Answer

Rajendra Mishra from Kendriya Vidyalaya, Koliwada, Kane Nagar, Mumbai
Subject :NSO    Class : Class 6

Ans 1:

Rishabh Dwivedi from Sherwood Convent sr. secondary school, GURUGRAM
Class : Class 6
answer c

Post Your Answer

Rishab from OWS, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

Shivam Gupta from Army Public School, Noida
Class : Class 5

Ans 2:

ANURAG MOHANTY from DAV Public School Burla, SAMBALPUR
Class : Class 10

Ans 3:

aarav shankar from st xaviers high school, gurugram
Class : Class 7
No, it is A. R's liquid might absorb oxygen but how will it get CARBON DIOXIDE? So, R cannot be correct. P and W are both damp and both have air. If you read synopsis,seeds can sprout a little bit without sunlight. So, option A is correct.

Ans 4:

Navyaa Kalra from DPS Noida, NOIDA
Class : Class 5
answer should be B and not A ...................there must be a COMPUTING MISTAKE!!!

Ans 5:

anita from Manan Vidya Ranchi, Ranchi
Class : Class 4
D

Ans 6:

shalini mittal from DPS Greater Noida, Greater noida
Class : Class 4
it should be r and w

Ans 7:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Anyone from dhanbad or delhi public school dhanbad here ?

Ans 8:

Asank Kumar from Delhi Public School, navi mumbai
Class : Class 10
I am sorry to say but... he sad truth is that the answer was C.

Ans 9:

xxx from xxxxx, na
Class : Class 5
A

Ans 10:

kendre vaishnavi mangesh from podar international school , latur
Class : Class 5

Ans 11:

Ishaan Chakraborty from Don Bosco , Kasba
Class : Class 7
The answer is A

Ans 12:

Anjisha Chakraborty from Mount Litera Zee School, Jabalpur
Class : Class 5
Answer - P and W as moisture is needed as well as light for germination

Ans 13:

Sumit Biswal from Dps gandhinagar, Gandhinagar
Class : Class 7
B

Ans 14:

Deep Ajay Ovhal from Podar International School, Latur, Latur
Class : Class 7

Ans 15:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
BBBBBBB^BBBBBBBBBBBBBBBBBB

Ans 16:

Aaditya Gandhi from Heritage Experiential Learning School, Gurgaon
Class : Class 5
The ans can also be d as the box is dark as told in the question so it does not have sunlight and will be trapped without suffient amount of air so d can also be Ans!!!!!

Ans 17:

Jon from C, Kochi
Class : Class 5
The answer is A

Post Your Answer

Rudraksh Tiwari from Kumaon Public School Dwarahat, Almora
Subject :NSO    Class : Class 4

Ans 1:

Punyatoya from Harvest, Bengaluru
Class : Class 8
The solution is saying

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

Ans 3:

Ananya Kaushik from DPS Noida, Noida
Class : Class 4

Ans 4:

Adhrit from vibgyor high, Mumbai
Class : Class 4

Ans 5:

monisha garg from carmel convent school sector 9 chandigarh, panchkula
Class : Class 4

Ans 6:

Punyatoya from Harvest, Bengaluru
Class : Class 8
The solution is saying it h

Ans 7:

DHANVI from CAMBRIDGE SCHOOL MANGALORE, MANGALORE
Class : Class 4

Ans 8:

Alisha from Delhi Public School , bopal, Ahemdabad
Class : Class 8
HOW IS b CORRECT ?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

Ans 9:

Atheeq Ahmed Shaik from Ravindra Bharathi Global School, chennai
Class : Class 6
B

Ans 10:

RC from Vibgyor, Navi Mumbai
Class : Class 8

Ans 11:

Madhura Mageshwaran from zurich school, zurich
Class : Class 6
The correct anwer is B.

Ans 12:

Arjun from dpsnoida, Noida
Class : Class 4
B IS THE CORRET ANSWER YOU BLIND PERSON

Ans 13:

Ayaansh Singhal from Pinewood School, Saharanpur
Class : Class 8
dear sir please give the explanation of the ans to master ans admin revisewise

Ans 14:

Punyatoya from Harvest, Bengaluru
Class : Class 8
2 answers are there🤔🤔

Ans 15:

LAVANYA DADHWAL from BLOOM PUBLIC SCHOOL, South West Delhi
Class : Class 8
Material B allows 500 percent light through it while material C allows 150 percent light so material B allows more light to pass through it than material C.That’s why answer D is correct.😊

Post Your Answer

ATHARVAA PAUNIPAGAR from VIBGYOR HIGH, GOREGAON, MUMBAI, Mumbai
Subject :NSO    Class : Class 1

Ans 1:

KRISHNARGHYA PRAMANIK from DELHI PUBLIC SCHOOL, MEGACITY, KOLKATA WEST BENGAL
Class : Class 5

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B. The unscrambled word comes out to be HANDPUMP.

Post Your Answer

Kush Malpani from Cathedral and John Connon Senior School, Mumbai
Subject :NSO    Class : Class 7

Ans 1:

aditya from city pride school , Pune
Class : Class 7
D . because it is constant and in a specific direction

Ans 2:

Harshdeep roy from Bhavans School , Nagpur
Class : Class 7
Answer is option D

Ans 3:

aditya from city pride school , Pune
Class : Class 7
D . because it is constant and in a specific direction

Ans 4:

Harshdeep roy from Bhavans School , Nagpur
Class : Class 7

Ans 5:

Harshdeep roy from Bhavans School , Nagpur
Class : Class 7
Answer is option D.

Ans 6:

Harshdeep roy from Bhavans School , Nagpur
Class : Class 7

Ans 7:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
Answer is the option D

Ans 8:

Pranjal Khaitan from Jayshree Pariwal International School, Jaipur
Class : Class 7
The correct answer is A

Ans 9:

Harshdeep roy from Bhavans School , Nagpur
Class : Class 7

Post Your Answer

Sarika Lalwani from vibgyor, Kolhapur
Subject :NSO    Class : Class 5

Ans 1:

TANVI DAS from GAIL DAV Public School , Dibiyapur
Class : Class 8

Ans 2:

Mohammed Najl from Credence high school Dubai, Dubai
Class : Class 5
the answer is B

Ans 3:

Aryan Sirohi from Mount LItera Zee School, Bangalore
Class : Class 8
The answer is D] Bottle opener

Ans 4:

Harsh Sobti from the samhita academy, BLR
Class : Class 5
b b b b b b b b b b b b b b b b b b b b b b b

Ans 5:

anita from Manan Vidya Ranchi, Ranchi
Class : Class 4
A

Post Your Answer

Rajendra Mishra from Kendriya Vidyalaya, Koliwada, Kane Nagar, Mumbai
Subject :NSO    Class : Class 6

Ans 1:

Keshav Gupta from Prarambhika, Patna
Class : Class 6
B

Ans 2:

Arjun gupta from Dps noida , Noida
Class : Class 7
iron filings and sand can also be separated from winnowing

Ans 3:

Adithi Keshava from National Center For Excellence , Bangalore
Class : Class 7
No iron fillings and sand are heavy

Ans 4:

PS Gour from Chirec international schoo The best 30 years and beyond, Hyderabad
Class : Class 7
pl answer i think the answer will be(i),(iii) and (iv).please check and tel me if im correct

Ans 5:

Ahmed Feroz Khan from Jankidevi Public School, Mumbai
Class : Class 5
Because iron fillings and sand can be separated as iron is heavier than sand.

Ans 6:

Vihaan Dhondiyal from Delhi public school, BANGALORE
Class : Class 7
The answer is (i) and (iii) because iron filling can be separated by using magnetic separation

Ans 7:

Anika Saha from New Town School, KOLKATA
Class : Class 6
B

Ans 8:

Ahmed Feroz Khan from Jankidevi Public School, Mumbai
Class : Class 5
Even I feel answer should be option 'B'

Ans 9:

SAMPAD BANERJEE from DELHI PUBLIC SCHOOL , BILASPUR
Class : Class 9

Ans 10:

KEERTHANA SHIBU from INDIAN SCHOOL GHOUBRA, Oman
Class : Class 7
checked in google sof gave right answer

Post Your Answer

Kush Malpani from Cathedral and John Connon Senior School, Mumbai
Subject :NSO    Class : Class 7

Ans 1:

Shravan from Harvest International School , Bangalore
Class : Class 9
sorry convex mirror

Ans 2:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
I think it is the option D because when an object is very close to a concave mirror that is its focal length, the image formed is magnified , laterally inverted and virtual .

Ans 3:

dhairya mittal from vidyashram international school jodhpur, Jodhpur
Class : Class 5

Ans 4:

POORVA MEHROTRA from STUDY HALL LUCKNOW, Lucknow
Class : Class 8

Ans 5:

POORVA MEHROTRA from STUDY HALL LUCKNOW, Lucknow
Class : Class 8

Ans 6:

A Mohammed Yusuf from national acadamy central school , ramnathapuram
Class : Class 7

Ans 7:

Manan Jain from Modern School, Jaipur
Class : Class 8
Why the answer cannot be A and B both i.e. Option D

Ans 8:

Shravan from Harvest International School , Bangalore
Class : Class 9
I think it should be all of the above, even concave mirror shows lateral inversion.

Ans 9:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 10
correct ans is option D because when an object is very close to a concave mirror that is on its focal length, the image formed is magnified , virtual, and laterally inverted.

Ans 10: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A.

Post Your Answer

ATHARVAA PAUNIPAGAR from VIBGYOR HIGH, GOREGAON, MUMBAI, Mumbai
Subject :NSO    Class : Class 1

Ans 1:

Asutosh Dash from DPS ecity, Bengaluru
Class : Class 5
D

Post Your Answer