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nishka Alpesh Lad from U S Ostwal English Academy, Mumbai
Subject :NSO    Class : Class 7

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Dhruvan G from Indian School al Ghubra, Muscat
Subject :NSO    Class : Class 9

Which of the following is not correct?

A If we drop a 10 lb iron ball and 1 lb aluminium ball from the top of a high platform inside a mine, then both will reach the floor at the same time.
B The gravitational force of attraction between the two bodies increases when their masses are increased and distance is reduced.
C We do not observe small objects moving towards each other because frictional force balances the gravitational pull.
D When a body is thrown up, the acceleration due to gravity at the topmost point is zero because velocity of the body is zero.


Shouldn't it be C

Ans 1:

Tanmay Mehta from Nirmala Convent high school, Renukoot
Class : Class 9
the right answer is C.

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Nipun Abhilash from National Public School, Banashankhari, Bangalore
Subject :NSO    Class : Class 8

Ans 1:

Ayush Anand Sharma from GEMS international school , Gurgaon
Class : Class 8
I don't think there is a correct answer because the force exerted by the upper spring balance will resist the reading on the lower balance for the Object

Ans 2:

Nipun Abhilash from National Public School, Banashankhari, Bangalore
Class : Class 9
upper 10 kg plus weight of bottom scale

Ans 3:

bipasana from KV IIT Kanpur, Kanpur
Class : Class 8
There's an error in the question

Ans 4:

Nipun Abhilash from National Public School, Banashankhari, Bangalore
Class : Class 9
Correct answer not available upper scale will show weight of bottom scale as well

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Agastya from NCS Arakkonam, Chennai
Subject :NSO    Class : Class 7

Ans 1:

nishka Alpesh Lad from U S Ostwal English Academy, Mumbai
Class : Class 7
B. Rainfall

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Aditya Sai Vemparala from Amanora school, Pune
Subject :NSO    Class : Class 8

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Agastya from NCS Arakkonam, Chennai
Subject :NSO    Class : Class 7

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

Ans 1:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
Monika powerful tail does not mean a heavy tail and also birds need to have a powerful tail so that they can change the direction of their flight

Ans 2:

Arnav Parija from KIIT International School, Bhubaneswar
Class : Class 5
ANS IS D

Ans 3:

devyansh from MVN, faridabad
Class : Class 5
ans is c

Ans 4:

SANVI ROHILLA from The little shri, Rohtak
Class : Class 5

Ans 5:

Saiansh Tapuriah from The Shri Ram School, Aravali, Gurgaon
Class : Class 5
The Answer is C. Birds do have a streamlined body to help them in flying, but they do not have a powerful tail.

Ans 6:

SANVI ROHILLA from The little shri, Rohtak
Class : Class 5
Ans should be D As birds also have Powerful Tail

Ans 7:

Mannan from Sherwood High, Bengaluru
Class : Class 6
guys how is it C ? has this not been taught to you in school?this is a simple no brainer question ,the right answer is d according to me .please revise it once

Ans 8:

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

Ans 9:

Anantjit Chander from Apeejay School, Sector 14, Faridabad, Faridabad
Class : Class 6
Yes, Mannan. We can see that option (D) should be a suitable answer. Or not 😐

Ans 10:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
I wonder why sof doesn't reply to us

Ans 11:

Fareeha siddiqua from Janki Devi public school , Mumbai
Class : Class 5
ans is C

Ans 12:

devyansh from MVN, faridabad
Class : Class 5
ans is c

Ans 13:

Pranjal Agarwal from St Kabir Public School , Panchkula
Class : Class 5

Ans 14:

RAYANSH MISHRA from VIBGYOR HIGH, Pune
Class : Class 4
huiphupylogto78k error tfjm dvn hyd nhydfsdftjds shutting down c or d

Ans 15:

Monika Bhattacharya from the lexicon international school kalyaninagar, pune
Class : Class 5
Answer is cHow can it be d?How can the birds have powerful tail?If they had, they wont be able to fly up in the sky with heavy bodies.

Ans 16:

Ahaan Mittal from Primus Public School, Bengaluru
Class : Class 6
C is the correct answer. Check solution

Ans 17:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
hence ans is D

Ans 18:

Prisha Shah from Euroschool Airoli, Mumbai
Class : Class 6
The corect ans is C

Ans 19:

Mohhika Sharma from Delhi Public School Greater Noida, Noida
Class : Class 5
In the solution, they show that a strong tail is gonna hinder flight. Seriously, guys? It's a no brainer, and if it hasn't been taught in school, logical reasoning can be applied. Of course a strong tail would be heavier. Why not? If a person is strong, he is heavy. It's simple- more mass= more weight. Come on. Everyone knows this. It's just logic science!

Ans 20:

Samanyu from NPSI, Singapore
Class : Class 5
how is it c it should be d

Ans 21:

shubhavi Dhondge from NPS, Banagalore
Class : Class 5

Ans 22:

Ronav Kerkar from Arya Vidya mandir, Mumbai
Class : Class 5
D

Ans 23:

Parijaat waghmare from centre point school international, Nagpur
Class : Class 5
it is d

Ans 24:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
ans is D

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Sneha Sarkar from South city international school, Kolkata
Subject :NSO    Class : Class 3

Ans 1:

RAYANSH MISHRA from VIBGYOR HIGH, Pune
Class : Class 4
woodpecker ?how?

Ans 2:

Avinita from NK Bagrodia Rohini , Delhi
Class : Class 3
woodpecker

Ans 3:

Avinita from NK Bagrodia Rohini , Delhi
Class : Class 3
woodpecker

Ans 4:

RAYANSH MISHRA from VIBGYOR HIGH, Pune
Class : Class 4

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Tanishka from Gopalan International School, Bangalore
Subject :NSO    Class : Class 2

Ans 1:

Gaurika Bhasin from Genesis global school, Noida
Class : Class 2
🍼 milk is the correct answer

Ans 2:

KASHIKA RAUT from ST JOSEPH SCHOOL, RIHAND NAGAR
Class : Class 2

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Mithran L from The Shishukunj International School, Indore
Subject :NSO    Class : Class 6

Fill in the blanks with most appropriate option.
Although a number of objects, such as kites, birds, aeroplanes move in space, but their shadow is not seen on the earth. This is due to the reason that the (i), the region of complete (ii) is not able to reach the earth. The region of partial (iii), that is the (iv) reaching the earth is too large and too faint to be visible to us.

(i) (ii) (iii) (iv)
A Penumbra Darkness Brightness Umbra
B Penumbra Brightness Darkness Umbra
C Umbra Darkness Brightness Penumbra
D Umbra Brightness Darkness Penumbra


Ans 1:

Devabhrith from Delhi Public School Electronic City Bangalore, Bengaluru
Class : Class 6
Correct Answer is C (Btw Guys please sub to ReaPeR Wolf On Youtube)

Ans 2:

Sidharth Maheshwari from Pathways School Gurgaon, Gurugaon
Class : Class 6
c

Ans 3:

shalini mittal from DPS Greater Noida, Greater noida
Class : Class 4
i am not able to unsderstand how the answer is c

Ans 4:

Mithran L from The Shishukunj International School, Indore
Class : Class 6
The answer is option (B).

Ans 5:

Suhaana Rumane from Vyasa International School, Bangalore
Class : Class 6

Ans 6:

Shambhavi Deshpande from Sanjivani Rural Education Society's Sanjivani Academy Kopargaon, Kopargaon
Class : Class 6

Ans 7:

Ayush Chauhan from Modern Public School, Bhiwadi
Class : Class 6
The Right answer is B

Ans 8:

Mithran L from The Shishukunj International School, Indore
Class : Class 6

Ans 9:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 6

Ans 10:

Divija Goyal from DPS School 45 , gurgaon
Class : Class 6

Ans 11:

Rithanya Senthilkumar from Spectrum Life School, Namakkal
Class : Class 6
Hey what is this yaar

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