National Science Olympiad Forum By SOF Olympiad Trainer - Page 382

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 3

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
The answer is b,because duckweed and water lettuce are non-flowering floating plants,but in the picture there is a flowering floating plant and in the question there is written to choose the correct option similar to it.So, the answer is B.

Ans 2:

Class : Class 4
good they should recheck every answer they put

Ans 3:

Class : Class 8
ans is B because, duckweed and water lettuce is nonflowering water plants.

Ans 4:

Class : Class 4
But y is the correct answer being shown as A??

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
All are correct

Ans 2:

Class : Class 6
ALL OPTIONS ARE CORRECT

Ans 3:

Class : Class 4
b

Ans 4:

Class : Class 2
All are correct

Ans 5:

Class : Class 6
B

Ans 6:

Class : Class 2
B

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Subject :NSO    Class : Class 6

Read the given passage and select the option which correctly fills any three of the blanks. (i) is the main source of water on Earth however (ii) , is considered more pure than (i) as it is free from contaminants. City roads flooded with water, dry up due to the process of (iii) . Rate of (iii) increases with (iv) in temperature. The process of (v) changes water vapour present in air into water. (iii) and (v) help in circulating water between hydrosphere and atmosphere.

A(i)-Groundwater, (ii)-Rainwater, (iv)-Decrease
B(ii)-Underground water, (iii)-Evaporation,(v)-Transpiration
C(i)-Surfacewater, (ii)-Groundwater,(iv)-Decrease
D(ii)-Groundwater, (iv)-Increase,(v)-Condensation


Ans 1:

Class : Class 6
Rain water is the purest form of water

Ans 2:

Class : Class 6
RAINWATER IS PUREST FORM OF NATURAL WATER

Ans 3:

Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
this

Ans 2:

Class : Class 6

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8

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Subject :NSO    Class : Class 7

Read the following statements and select the correct option.
Statement 1 : It is not possible to photograph a virtual image.
Statement 2 : An image is said to be virtual if the reflected or refracted rays are diverging in nature.

A Both statement 1 and statement 2 are true and statement 2 is the correct explanation of statement 1.
B Both statement 1 and statement 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true but statement 2 is false.
D Statement 1 is false but statement 2 is true.


Ans 1:

Class : Class 8
Virtual images is NOT defined correctly, because in a plane mirror parallel rays of light stay parallel. There is no divergence, but it's still a virtual image formed. So the correct answer should be both statements are false, which isn't an option for some reason

Ans 2:

Class : Class 3
both r not correct

Ans 3:

Class : Class 9
(D) opt as we can definitely capture image of virtual image when we take photo of the mirror and the virtual image is defined correctly

Ans 4:

Class : Class 6

Ans 5:

Class : Class 7
the correct answer is (b) as a virtual image cannot be captured on a screen which means it cant be photographed so statement 1 is correct and a virtual image is formed by a convex mirror and It has diverging rays so a virtual image can also be defined as an image formed by diverging rays so statement two is correct but the reason for first statement is that a virtual image cannot be captured on a screen so (b) is the correct answer

Ans 6:

Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
c as carbon dioxide is not used as a fertilizer

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
The food should not be over cooked

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
What is cardigan? I don't know what

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