National Science Olympiad Forum By SOF Olympiad Trainer - Page 60

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 9
A

Ans 2:

Class : Class 2
The all live in water.

Ans 3:

Class : Class 8
A

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 9
A

Ans 2:

Class : Class 8
A

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Subject :NSO    Class : Class 4

A toy car is released from point Q of the ramp and travels towards point P. What is/are the force(s) responsible for pulling the car towards point P?

(A) Weight of the car
(B) Earth’s gravity
(C) Earth’s magnetic field
(D) Frictional force between the wheels and the ramp

A (B) only
B (A) and (B) only
C (B) and (D) only
D (A), (B), (C) and (D)


weight of the car should not be called a force. Gravity is the only force that is pulling the car here. answer should be A

Ans 1:

Class : Class 8
The answer is WRONG

Ans 2:

Class : Class 7
Please explain this I did not understand

Ans 3:

Class : Class 3
I agree with harry potter from hotle California,california.

Ans 4:

Class : Class 8
B

Ans 5:

Class : Class 5
Sorry ,i thought d instead of c.

Ans 6:

Class : Class 2
The answer should be b and d

Ans 7:

Class : Class 4
Solution is wrong.

Ans 8:

Class : Class 5
I thought the answer is c because every option makes the car move.

Ans 9:

Class : Class 6
It has to do with the bad way of the software because I had pressed B but it is showing that I had Pressed A.

Ans 10:

Class : Class 7
how does the weight of the car pull it down???

Ans 11:

Class : Class 7
Q is wrong, as earth's gravity is due to its magnetic force. the correct answer is a, b, and c.

Ans 12:

Class : Class 7
A weight of car not option

Ans 13:

Class : Class 7
How come?Please explain

Ans 14:

Class : Class 5
Thanks Rayansh

Ans 15:

Class : Class 2
yaa ayush

Ans 16:

Class : Class 4
the answer should be C ... it can never be A ... Master answer pleeeeeese explain

Ans 17:

Class : Class 7
how is it A

Ans 18:

Class : Class 4
How can it be weight of the car?

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
Thank You Swarit

Ans 2:

Class : Class 6
D

Ans 3:

Class : Class 3

Ans 4:

Class : Class 7

Ans 5:

Class : Class 8
D

Ans 6:

Class : Class 7
YES D

Ans 7:

Class : Class 6
A hand blender runs on electricity. When it is switched on, its blades rotate and a sound is also produced as the motor starts. Thus, electrical energy changes into kinetic energy and sound energy.

Ans 8:

Class : Class 5
I thought the answer is c

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Subject :NSO    Class : Class 4

Three uniform planks, P, Q and R are balanced on pivots. Two equal forces, each of value F, act on each plank but in different manners as shown in the figure.Which of the following options is correct regarding this?


APlank P will either bend or break.
BPlank Q will show no movement at all.
CPlank R will be pulled up the pivot.
DPlank P will show no movement at all.


if equal is being applied on Q....on the left lower and right upper end.... wont it balance out and not make Q move? How is option B correct?

Ans 1:

Class : Class 4
answer is d

Ans 2:

Class : Class 9
The correct answer is D

Ans 3:

Class : Class 8
B

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
a

Ans 2:

Class : Class 9
A

Ans 3:

Class : Class 5
A

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
The next number is got by adding 8 .16 8 = 24, 24 8 = 32 and 32 8 = 40. So, 40 8 = 48Answer-B. 48

Ans 2:

Class : Class 6

Ans 3:

Class : Class 5

Ans 4:

Class : Class 6
adition of 8 simple plause

Ans 5:

Class : Class 5
b aka 48

Ans 6:

Class : Class 5

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Subject :NSO    Class : Class 4

Which of the following statements is/are INCORRECT regarding the given figures, X and Y?
1. X depends partly on animals for food but can also make its own food while Y cannot make its own food.
2. X has chlorophyll while Y does not contain chlorophyll and is non-green.
3. In X, food is prepared by the green stem, whereas Y obtains its food from dead and decaying plants and animals.
4. X and Y have patches of green colour. Only green part of their leaves performs photosynthesis.


A1, 3 and 4
B2 and 3
C1 and 4
D3 and 4


C

Ans 1:

Class : Class 7
A

Ans 2:

Class : Class 7

Ans 3:

Class : Class 9
B

Ans 4:

Class : Class 8
B

Ans 5:

Class : Class 9
C

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 7
the answer is D because 3x3x2 = 18

Ans 3:

Class : Class 5

Ans 4:

Class : Class 9
D

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