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Paarth Vashistha from Kunskapsskolan Gurgaon , Gurgaon
Subject :NSO    Class : Class 8

There are three long planks, each of length 5 meters.
Three identical balls are placed on the planks as shown in the figure.
Frictional force offered by planks I, II and III on the ball are f1, f2 and f3 respectively.

If same force (push) is given to each ball then time taken to leave the planks I, II and III are 2 minutes, 1 minute and 4 minutes respectively.
Which of the following options is correct regarding the friction force offered by the planks on the ball?

Af1 = f2 = f3
Bf1 > f2 = f3
Cf3 > f1 > f2
Df3 < f1 < f2


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Shiven Sidharth from Delhi Public School Vasant Kunj, New Delhi
Subject :NSO    Class : Class 3

Ans 1:

Abhinha Ajay Ovhal from Podar International School, Latur
Class : Class 6
answer is d because the way can also be ABECD

Ans 2:

Arya Shreshth from Home School, Bengaluru
Class : Class 2
it should be b

Ans 3:

Kashika Goel from DPS Noida, Noida
Class : Class 6

Ans 4:

Aurinjay Mukhopadhyay from Future Foundation School, KOLKATA
Class : Class 5
it is b idiots

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Advait bhat from Kendriya Vidyalaya , Bangalore
Subject :NSO    Class : Class 6

Ans 1:

Sreenidhii from Kendriya vidyalaya, DINDIGUL
Class : Class 6
4 3 9 3 3 9 5 3 9 7 69 5

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Paarth Vashistha from Kunskapsskolan Gurgaon , Gurgaon
Subject :NSO    Class : Class 8

Following statements are given by four students :
Rashmi : Sodium chloride is an acidic salt whereas washing soda is a basic salt.
Akshi : The aqueous solution of sugar does not change the colour of either red litmus solution or blue litmus solution.
Reema : Tamarind tastes sour whereas baking soda is bitter in taste.
Shristi : Apple juice does not change the colour of red litmus solution.
The incorrect statement(s) is/are given by

AReema and Shristi only
BRashmi only
CAkshi and Reema only
DAkshi and Shristi only.


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SAMARPAN DAS from Notre Dame Academy, Salakati Kokrajhar
Subject :NSO    Class : Class 3

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Joahanna Gabriel from Christwood school, Chennai
Subject :NSO    Class : Class 8

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Siddharth Lakshmi Narayan from Greenwood High, Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Bidyaghnya Banerjee from Vidyasagar Shishu Niketan, West Bengal
Class : Class 6
Actually, we spread cover on the floor and cover becomes mirror. . .

Ans 2:

Avika Goel from Delhi Public School, Navi Mumbai
Class : Class 6
No. 'Mat' becomes 'mirror' and we spread the mat over the floor so the answer is mirror.

Ans 3:

Nayanika Sadhish from CL Metha Sishya OMR, Chennai
Class : Class 8
we can put cover on anything but we definitely don't put on floor

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Siddiqua Modi from gems modern academy, udaipur
Subject :NSO    Class : Class 7

Read the given statements and select the correct option.
Statement 1 : Circular motion is the motion along a curve traced out by a moving object such that its distance from a fixed point is constant.
Statement 2 : The motion of a wheel of a moving bicycle is same as the motion of a mark on the blades of a moving electric fan.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true but statement 2 is false.
DStatement 1 is false but statement 2 is true.


Ans 1:

Avn lakshmi from Bvbarra, Hyderabad
Class : Class 4

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Trina from Ganges Valley School, Hyderabad
Subject :NSO    Class : Class 6

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Anamkhan Mulla from Navrachna Sama, Vadodara
Subject :NSO    Class : Class 6

Shobha took two liquids (coconut oil and water) in a separating funnel as shown in the figure. What would she observe after some time?


A Layer ‘X’ is coconut oil, ‘Y’ is water and two distinct layers are formed.
B Layer ‘X’ is water, ‘Y’ is coconut oil and two distinct layers are formed.
C Layers ‘X’ and ‘Y’ are miscible to some extent, hence do not form distinct layers.
D Coconut oil is first collected in the beaker.


Easyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

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