National Science Olympiad Forum By SOF Olympiad Trainer - Page 127

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 8
ANSWER IS D

Ans 2:

Class : Class 8
ANSWER IS D IN THE SOLUTIONS , THEN WHY IS A THE ANSWER THAT THEY HAVE MARKED? UNFAIR!

Ans 3:

Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
That's true. I think you should write freezing

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Subject :NSO    Class : Class 6

Match the following and select the correct option from the codes given below.

Column I Column II
(A) Railway engine (i) Quintal
(B) Packet of chilli (ii) kg powder
(C) Sack of wheat (iii) mg
(D) Huge bag of sand (iv) g
(E) Aspirin tablet (v) Metric ton


A (A) - (v), (B) - (iv), (C) - (i), (D) - (ii), (E) - (iii)
B (A) - (i), (B) - (ii), (C) - (iii), (D) - (iv), (E) - (v)
C (A) - (ii), (B) - (iv), (C) - (v), (D) - (iii), (E) - (i)
D (A) - (iii), (B) - (ii), (C) - (iv), (D) - (v), (E) - (i)


option A

Ans 1:

Class : Class 4
aa

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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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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 2
it should be b

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6
answer is d because the way can also be ABECD

Ans 4:

Class : Class 4
it is b idiots

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
4 3 9 3 3 9 5 3 9 7 69 5

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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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