National Science Olympiad Forum By SOF Olympiad Trainer - Page 44

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
I think friction is taken as one and normal force tooif we are in apparent contact with one surface then friction is onebut the actual contact is at many places so we can't say it as many frictional forces.

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Subject :NSO    Class : Class 8

There are three tins filled with water and have holes of the same size as shown in figure. Which of the following options correctly identifies true (T) and false (F) ones?

(i) The farthest spout is from the middle hole in case (a).
(ii) The stream of water falls out the farthest through the upper hole in case (b).
(iii) The farthest spout is from the lowest hole in case (c).

(i) (ii) (iii)
A T T T
B F T T
C F F T
D F F F


option c is correct

Ans 1:

Class : Class 8
the answer given is wrong, just checked from the book answer key

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8
It should be C.Please fix the technical errors.

Ans 4:

Class : Class 9
yes why?

Ans 5:

Class : Class 8
The ans is wrong

Ans 6:

Class : Class 8
bro why?? i dont undestand..pls help

Ans 7:

Class : Class 8
Yeah the answer is wrong it should be C

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Match column I with column II and select the correct option from the codes given below.

Column I Column II
a. Inclined plane (i) Bottle opener
b. Wheel and axle (ii) Ramp
c. Lever (iii) Jar lid
d. Screw (iv) Screwdriver
e. Wedge (v) Fork

a b c d e
A (iii) (ii) (iv) (v) (i)
B (i) (iii) (v) (iv) (ii)
C (iv) (v) (iii) (ii) (i)
D (ii) (iv) (i) (iii) (v)


the correct answer is d

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 9

A number arrangement machine when given an input consisting of numbers arranges the numbers in a particular way until all the numbers are arranged in a specific order.
Read the following steps of rearrangements.
Input : 60 54 18 48 12 90
Step I : 60 90 54 12 18 48
Step II : 60 48 90 18 54 12
Step III : 60 12 48 54 90 18
Step IV : 60 18 12 90 48 54
Step V : 60 54 18 48 12 90
The step V is the final step.
Identify the rule in the given steps of rearrangement and hence answer the question given below.
What will be the Step III for the given input?
Input : 5 12 18 40 77 82

A 82 77 40 18 12 5
B 5 12 18 40 77 82
C 5 82 12 77 18 40
D 5 40 77 82 12 18


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Subject :NSO    Class : Class 9

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