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

Ans 1:

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

Ans 2:

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

Ans 3:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The correct answer is A

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MAHESH PRASAD MC from Silveroaks, Hyderabad
Subject :NSO    Class : Class 8

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tamojit das from techno India Group Public School , Chinsura
Subject :NSO    Class : Class 8

Ans 1:

Ayush Gorain from Sarala Birla Public School, Ranchi
Class : Class 8
According to Faraday's right hand rule, electricity flowing from point A to B generates a magnetic field around the wire moving from right to left (above the wire), and left to right (below the wire). Due to the compass being above the wire (according to the question), the compass needle must be influenced by the magnetic field, such that it points towards the right; i.e. the needle points in a direction from left to right. Thus, I opine that option (A) is the correct answer, not option (D). As there is an electric current, there must be a magnetic field, and thus there must be a deflection in the compass, which excludes option (D) entirely.

Ans 2:

Student from School, City
Class : Class 8
The *solution* and the *option* mismatch.

Ans 3:

S V Harini from Vailankanni public school , Krishnagiri
Class : Class 8

Ans 4:

Pranav from JSS Public School, Bengaluru
Class : Class 10
The answer is Option A

Ans 5:

Nilanjana De from Delhi Public School North, Bengaluru
Class : Class 8
The solution says that the answer is supposed to be d but according to the explanation given the answer seems to be a. Please explain.

Ans 6:

Dhanya Krishnaji from ISG, Muscat
Class : Class 8
It’s A . The question uses Maxwell’s right thumb rule.

Ans 7:

Karthik Rao Varam from Bala Vidya Mandir, Chennai
Class : Class 10

Ans 8:

Hprakash09 from Billabong high Bhopal, Bhopal
Class : Class 7
I'm not sure what the answer is in this one, as the correct answer and the solution are mismatched.

Ans 9:

Arnav Ranka from Gyan Bharati School, Saket, New Delhi
Class : Class 9

Ans 10:

Akshara from NPS, Bengaluru
Class : Class 8
It should be A...

Ans 11:

Sumedha Mishra from xyz, School, Pune
Class : Class 8

Ans 12:

aditya arora from Heritage Experiential Learning School, gurugram
Class : Class 8
should be a

Ans 13:

Ayush Chauhan from Modern Public School, Bhiwadi
Class : Class 9

Ans 14:

Gaurish Singla from DPS School Sector 19, Faridabad
Class : Class 8

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Antara Mazumdar from Navy Children School, Mumbai
Subject :NSO    Class : Class 7

Ans 1:

rachith from null, null
Class : Class 7
this q didnt come

Ans 2:

Spandan Pradeep Pathare from Takshila school , Ahmednagar
Class : Class 8
Answer is option a as decomposition of dead matter of plant and animal by animals which gives nutrients to plants

Ans 3:

Jai kumar Bohara from Dps, Udaipur
Class : Class 9
this question did not come in the question paper,when i was solving

Ans 4:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7
this question did not come in the question paper,when i was solving

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JANANI DINESH from CHINMAYA VIDYALAYA VIRUGAMBAKKAM, CHENNAI
Subject :NSO    Class : Class 3

Ans 1:

Kashika Goel from DPS Noida, Noida
Class : Class 7

Ans 2:

Sourish Mahakul from Delhi Public School Electronic City, Bengaluru
Class : Class 8
answer is c

Ans 3:

Anagh Agrawal from Billabong high, JABALPUR
Class : Class 3
D

Ans 4:

Kashika Goel from DPS Noida, Noida
Class : Class 7
B first look which animals are connected to Bulbul with an arrow find their population then find population of other animals answer - B

Ans 5:

Hamsini from yagappa international school, Thanjavur
Class : Class 5
c

Ans 6:

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

Ans 7:

Aarvi Gosai from The New Tulip International School, Ahmedabad
Class : Class 4
Wrong

Ans 8:

Kian Gracias from BOMBAY SCOTTISH SCHOOL, MUMBAI
Class : Class 4
nice question

Ans 9:

anu from The Amaatra Academy, Bengaluru
Class : Class 5
class: 3 this doesent make sense

Ans 10:

Shruti from ,
Class : Class 1
answer is c but it is saying b which is wrong

Ans 11:

Adya Shree from Shishya BEML Public School, Bangalore
Class : Class 3

Ans 12:

Mohi from Vibgyor, Bangalore
Class : Class 6
B

Ans 13:

Siddhant from Gundecha Education Society, Mumbai
Class : Class 3
D - Because increase in plant also increases population of Caterpiler and Grasshopper, and decrease in snake may constant Bulbul population if plant did not increases.

Ans 14:

Yatindra G from SBOA, Chennai
Class : Class 4
answers to all the questions:::: 1 : B 2: B 3:A 4:D 5:B

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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 5

Ans 1:

Divyanshi from United international School, Bangalore
Class : Class 6
I agree with Ira not with Arnav because pulley does not lessen the effort.

Ans 2:

Hari Govind from Delhi Public School Chandigarh , Chandigarh
Class : Class 6
d

Ans 3:

Arnav Agrawal from Emerald hieghts international school , Indore
Class : Class 5
B because if we use a rope to pull it will take a lot of effort, if we take a small or large inclined plane it will also take more effort because the load will slip down but in pulley we have to only pull the rope

Ans 4:

Ira Jamsandekar from Shantiniketan, KOLHAPUR
Class : Class 10
Single pulley does not provide any mechanical advantage, it only changes the direction of force while an inclined plane provides mechanical advantage. This means the efforts required to life the same amount of load on an inclined plane is lesser than that by a single pulley. (Pulley provides mechanical advantage only if we use more than one pulley).Lesser the inclination more is mechanical advantage and lesser the effort. That means the correct answer should be 'D'

Ans 5:

Ashwak from Cambridge, Jalandhar
Class : Class 9
B

Ans 6:

Samarth Sabari from GIIS, Singapore
Class : Class 9
B

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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 5

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Aaryan from New horizons public school , Mumbai
Subject :NSO    Class : Class 8

Ans 1:

Nilanjana De from Delhi Public School North, Bengaluru
Class : Class 8
The answer is option c

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Priyam Bhattacharya from cambridge court high school, jaipur
Subject :NSO    Class : Class 5

Ans 1:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6

Ans 2:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7

Ans 3:

Swarit from Indian School Wadi kabir, Muscat
Class : Class 6
Of the three mediums, sound waves travel the slowest through gases, faster through liquids, and fastest through solids. Sound waves need a medium to pass through. Liquid molecules are not packed as tightly as solids, and gases are very loosely packed. The spacing of the molecules enables sound to travel much faster through a solid than a liquid or a gas. Sound travels about four times faster and farther in water than it does in air. That means the right answer is Option D.i am the smartest guy in sofi have got once international rank 1in level 2

Ans 4:

SATYA ande from TM Patel International School , Surat
Class : Class 5

Ans 5:

Revant Singh from Delhi Public School Raipur, Raipur
Class : Class 5
ans 1 i have got 5 times in level 2 and 9 times in level 1

Ans 6:

Aarav Jain from Lodha World School, Thane, Thane
Class : Class 6

Ans 7:

Mithul Pranav KB from Narayana Olympiad School Madipakkam, Chennai
Class : Class 5

Ans 8:

Aaditya Malhotra from Isaac Newton Global School, Mumbai
Class : Class 3

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Harsh Sobti from the samhita academy, BLR
Subject :NSO    Class : Class 4

Ans 1:

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

Ans 2:

IAMLOST from ABC, Pune
Class : Class 8
option b is the correct answer

Ans 3:

Vidhuran S from Euro School Whitefield, Bangalore
Class : Class 4
a

Ans 4:

Shreyansh Saha from Dps Megacity, Kolkata
Class : Class 5
The correct Option is b

Ans 5:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Harsh , the answer is B not A

Ans 6:

somesh from Centre point katol road, Nagpur
Class : Class 6
B

Ans 7:

vighneshwar from study hall, Lucknow
Class : Class 5
B

Ans 8:

Harsh Sobti from the samhita academy, BLR
Class : Class 5
the answer is a a a a a a a a!!!!!!!!!!!!

Ans 9:

bswarajya from Mount Litera Zee School, Bengaluru
Class : Class 5
B

Ans 10:

Priya Kulkarni from Podar international school , Ratnagiri
Class : Class 4
B

Ans 11:

Tavish Singh from Sanskriti School, Hyderabad
Class : Class 4
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