National Science Olympiad Forum By SOF Olympiad Trainer - Page 339

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9

Ans 2:

Class : Class 10
MCPA is a weedicide, so it should not be A

Ans 3:

Class : Class 9

Ans 4:

Class : Class 4

Ans 5:

Class : Class 10
It should be option C because 2 4-D is a pesticide

Ans 6:

Class : Class 9
It should be C

Ans 7:

Class : Class 8

Ans 8:

Class : Class 9
shouldnt the answer be a? simazine is also a pesticide

Ans 9:

Class : Class 4
Simazine is pesticde! The answer must be A

Ans 10:

Class : Class 8

Ans 11:

Class : Class 8
BHC is also a pesticide the answer is Dgammaxane too is a pesticide from olympiad prep guide bookpls correct your mistake or if i am wrong give a proper solution

Ans 12:

Class : Class 8
But shouldn't it be option C, as 2 and 4 D are fertilizers.

Ans 13:

Class : Class 10
The answer should be c as that is the only one that has 2,4D as it's option also the SOF solution says the same but shows a different answer

Ans 14:

Class : Class 8
2 4 -D is a weedicide literally given in ncert too

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 10

Ans 2:

Class : Class 10
Isnt it A?

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1

C

 In the life cycle of butterflies etc., egg hatches to produce a young one called a larva which looks like a worm. After some days, it changes into pupa which finally turns into an adult.


Ans 2:

Class : Class 8

Ans 3:

Class : Class 7
C)

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
b

Ans 2: (Master Answer)

Class : Class 1

B

Blood, Heart and Blood vessels are all parts of the Circulatory system. Similarly, Kidneys, Lungs and Skin are organs of Excretory system.


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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3

Ans 2: (Master Answer)

Class : Class 1

B

Option A and C has correct statements and option B has incorrect statement. Bird Y can fly. It can be woodpecker, which has feet similar to parrot. Bird X can fly as well as swim. It cannot be the black and white coloured bird found at poles, as it cannot fly.Bird Z runs fast. It can be ostrich that lays largest egg in the world.

 


Ans 3:

Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

C


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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 3

Ans 2:

Class : Class 8
The answer is option B. We can see that the difference between w's height (3) and x's height (7) is the highest as compared to others. Therefore the moving ball gained maximum speed at X

Ans 3:

Class : Class 8
Oh sorry! The reason is that at X, the ball traveled most distance in less time as compared to other.. That's the reason that the ball has greatest avg. speed at X

Ans 4:

Class : Class 9
the graph is not clear

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
The correct answer is: D

Ans 2:

Class : Class 9

Ans 3:

Class : Class 4
Doesn't hot air rise up from the land and cold air take up the hot air's place?

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