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Issac Newton from IIT Indian Institutes of Technology , Jalandhar
Subject :NSO    Class : Class 3

Ans 1:

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

Ans 2:

Iraj Singh from DPS Megacity, Kolkata
Class : Class 4
The correct answer is C.

Ans 3:

Advait Apte from SSRVM, Pune
Class : Class 4

Ans 4:

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

Ans 5:

Advait Apte from SSRVM, Pune
Class : Class 4

Ans 6:

Havi Jain from GEMS modern academy, Gurgaon
Class : Class 3
C

Ans 7:

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

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

Read the given statements and select the correct answer.
Statement 1 : The distance x at which a car can be stopped by applying brakes depends on the initial velocity.
Statement 2 : Mass of the car has no role to play.

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.


mass of the car has role to play due to momentum.

Ans 1:

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 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:

Pranav Prakash from SSSVV GAIL Vijaipur, Guna
Class : Class 7
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 4:

Anu Aarna Jagadeesan from Don Bosco School of Excellence, Chennai
Class : Class 4

Ans 5:

Amishee Surya from bgsnps, Bengaluru
Class : Class 8
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

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

Besides the arrangement as shown in the given set-up, what other arrangements must be made to test for the presence of starch in the leaves X and Y ?


A The plant should be destarched first and then used for the experiment.
B The plant should be placed in continuous light for 2-3 days prior to experiment.
C On leaf Y, iodine solution should be put on while leaf X should be used as control without iodine application.
D None of these


I suppose it should be placed in dark for destarching and then in sunlight for testing whether the plant can perform photosynthesis in absence of CO2..

Ans 1:

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

Ans 2:

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

Ans 3:

ANISH RANJAN SENAPATI from V S VIDYALAYA, SUNABEDA
Class : Class 5

Ans 4:

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

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Issac Newton from IIT Indian Institutes of Technology , Jalandhar
Subject :NSO    Class : Class 3

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Arnav kaul from Chirec, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Shreetej from Pearson public school, Pune
Class : Class 5
d is correct answer

Ans 2:

Shreetej from Pearson public school, Pune
Class : Class 5
D is the answer

Ans 3:

PRANAV VELDURTI from meridian school madhapur, hyderabad
Class : Class 6

Ans 4:

Shreetej from Pearson public school, Pune
Class : Class 5

Ans 5:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 6
DDDDDDDDDDDDDDDDDD

Ans 6:

Anirudh from Modern senior secondary school , CHENNAI
Class : Class 5

Ans 7:

Sanskriti Nagar from Rose Bud Academy, khagaria
Class : Class 5
D

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Arnav kaul from Chirec, Hyderabad
Subject :NSO    Class : Class 5

Refer to the given figure and select the incorrect statement.

(i) S is the coloured circular part of the eye.
(ii) P is the outermost part of eye and it maintains the shape of the eyeball.
(iii) Q is a layer of light sensitive receptors at the back of the eye.
(iv) R carries message from eye to brain.
(v) T is the folded skin above eye which protects eye from dust, durt, etc.

A (i) and (ii) only
B (ii), (iii) and (iv) only
C (i) and (v) only
D (ii), (iv) and (v) only

Ans 1:

Soham from DPS Whitefield, Bangalore
Class : Class 4
wrong answer

Ans 2:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5
tough one,i think the explanation is:S is lens and that part is not colored and t is either eye lids or cornea and neither of them is folded skin.acoording to me

Ans 3:

niuv from meridian, Hyderabad
Class : Class 6

Ans 4:

Mehar from NCS, Vasco
Class : Class 5
please explain

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Arnav kaul from Chirec, Hyderabad
Subject :NSO    Class : Class 5

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Arnav kaul from Chirec, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Dushyant Singh from Shri Ram Centennial School, Indore
Class : Class 6
both answers b and c are not advisable

Ans 2:

Dushyant Singh from Shri Ram Centennial School, Indore
Class : Class 6

Ans 3:

Dushyant Singh from Shri Ram Centennial School, Indore
Class : Class 6

Ans 4:

Dushyant Singh from Shri Ram Centennial School, Indore
Class : Class 6

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Arnav kaul from Chirec, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Vallabh Agrawalla from Sai International School, Bhubaneswar
Class : Class 5
After unscrambling the four jumbled words. We get, Sedimentation, Chlorination, Distillation and Filtration. Filtration and Sedimentation are methods of removing insoluble impurities. Distillation is the only option that is used to remove soluble impurities.

Ans 2:

PARUL GHARSE from Vibgyor, Mumbai
Class : Class 6

Ans 3:

Devina kashyap from TPS, Mumbai
Class : Class 4

Ans 4:

Devina kashyap from TPS, Mumbai
Class : Class 4

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

Ans 1:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 6
option B

Ans 2:

ASHMI Narkar from Vibgyor High Airoli, Navi Mumbai
Class : Class 4
The pattern followed is 6 7=137 9=16So,8 4=12

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