National Science Olympiad Forum By SOF Olympiad Trainer - Page 226

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 9

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Two boys are standing in front of a plane mirror as shown in the figure. If boy II walks 7 m towards boy I, then how far would the image of boy II appear to boy I?


A7 m
B9 m
C11 m
D14 m


can you please explain it properly. In the question, u have shown that boy 2 walks 7 meters towards boy 1. So then he would have been 5 meters away from boy 1. 12-7=5 2=7. In the solution, u have shown. 12-5=7 2=9. If the answer is 9 as u have shown, how will the boy 2 if went 7 meters to the boy 1 be away from the mirror by 9 Meters

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8

Ans 3:

Class : Class 7
boy 2- 2 12=14 -7=7m boy 2 in mirror for boy 1- 7m 2m= 9m

Ans 4:

Class : Class 7

Ans 5:

Class : Class 8
I think that there is a mistake in this question. Please fix.

Ans 6:

Class : Class 9
Boy I (2m) (12-7) = 2 5 = 7 m SOF see this

Ans 7:

Class : Class 8

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

Which of the following statements are incorrect regarding the given animals?

(i) Both X and Y possess streamlined body and webbed feet.
(ii) Both are good swimmers.
(iii) Y has a thick layer of fat under its skin with fur on its body, while X has thick skin and a layer of fat under its skin.
(iv) Both live together in large numbers and huddle together to keep themselves warm.
(v) Y has very strong sense of smell unlike X.

A (ii) and (iv) only
B (i), (ii) and (iv) only
C (ii), (iii) and (v) only
D (iv) only


Ans 1:

Class : Class 7

Ans 2:

Class : Class 3
No sry SOF says ans is D which is true

Ans 3:

Class : Class 7

Ans 4:

Class : Class 3
SO SOF Says ans is B which is true

Ans 5:

Class : Class 9

Ans 6:

Class : Class 9
POLAR BEARS HAVE PARTIALLY WEBBED FEET. I WAS ALOS CONFUSED ABOU IT. THEY MAKE THEIR BODY STREAMLINED DURING SWIMMING

Ans 7:

Class : Class 10
Polar Bear doesn't have webbed feet

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
The answer is c as diaphram contracts to flatten

Ans 2:

Class : Class 7

Ans 3:

Class : Class 4

Ans 4:

Class : Class 10
The given answer is wrong.The correct option is B only.

Ans 5:

Class : Class 9
I think the answer will be (B)

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
Can someone explain?

Ans 3:

Class : Class 7
How option[D]is represented as correct answer?

Ans 4:

Class : Class 7
Shouldn't the answer be 'C'?

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
kiddin cause the diamond is close to the edge

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Subject :NSO    Class : Class 5

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