National Science Olympiad Forum By SOF Olympiad Trainer - Page 769

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
B is the answer!

Ans 2:

Class : Class 7
I agree with Ishan as trees cannot grow very quickly...But I did B at my first attempt

Ans 3:

Class : Class 9
I think B is correct option as ash acts as a fertilizer for plants (even if in small quantities). Master Answer (Admin, Revisewise) EXPLAIN the answer to all of us.

Ans 4:

Class : Class 7
Harry?! What a fake! Harr potter is an adult!

Ans 5:

Class : Class 8
a is correct because there willbe soil erosion without trees

Ans 6:

Class : Class 7
i think the answer should be B because the statement 'New trees will grow quickly to replace the burnt ones as the ash of the burnt trees will make the soil more fertile' is also true

Ans 7:

Class : Class 5
BBBBBBBBBBBBBBBBBB IT IS THE CORRECT ANSWER I AGREE WITH THE OTHERS

Ans 8:

Class : Class 5
The question and choices given are a bit tricky. The correct answer is A because the language of (iv) is deceptive and says "new trees will grow quickly to replace the burnt ones". You have to understand that "new trees" won't grow quickly, you can only sow small plants not trees.

Ans 9:

Class : Class 8
B IS THE CORRECT ANSWER AS BURNING OF WASTE CROPS AFTER HARVESTING OF GRAINS IS STANDARD METHOD OF INCREASING SOIL FERTILITY

Ans 10:

Class : Class 4
I think B is the correct answer

Ans 11:

Class : Class 5
The correct answer is Bthis time I think SOF is wrong

Ans 12:

Class : Class 9
Answer is B as ash is an organic

Ans 13:

Class : Class 5
yes B is the answer as the ash contains minerals from the other trees.. i agree that the process of nitrogen fixation will make the soil fertile.........

Ans 14:

Class : Class 5

Ans 15:

Class : Class 7
the answer is B.

Ans 16:

Class : Class 7
THe AntwerpThe answer is (A) because if forest fire occurs there will not be any trees and soil erosion can happen and All the ashes including soil may erode and then how can it make the soil fertile

Ans 17:

Class : Class 10
I agree ,B is the correct answer

Ans 18:

Class : Class 8
Answer must be B as it is organic and increases soil fertility.

Ans 19:

Class : Class 7
The answer should be B.

Ans 20:

Class : Class 7
BBBB IS THE ANSWER

Ans 21:

Class : Class 2
ddddddd

Ans 22:

Class : Class 9
B is the correct answer

Ans 23:

Class : Class 6
B should be the correct answer

Ans 24:

Class : Class 5

Ans 25:

Class : Class 7
SOF is giving wrong answers ! Does it ever thinks that by reading wrong things , we can get lesser marks in our exams ?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Ans 26:

Class : Class 9
Ash is an organic matter so the answer should be B

Ans 27:

Class : Class 5
B B B B B B . B B B B B B BB BB B B B B B . IS THE ANSWER

Ans 28:

Class : Class 6
Come on Snigdha! The CORRECT ANSWER IS (B)! Ash makes soil fertile 'cause it's organic , dude! How will trees not grow?(P.S.- please don't think about Ash in Pokemon. Please, don't)🤦‍♂️🤦‍♂️

Ans 29:

Class : Class 9
I think the answer is B

Ans 30:

Class : Class 6
I think the answer should be b as after a forest gets destroyed by a forest fire ,new trees will grow as the remain of the trees will decompose and make the sol fertile.

Ans 31:

Class : Class 9
Actually, forest fires lower the level of nitrogen in the soil. Since nitrogen quantities in the soil is extremely important for plant growth, lowered level of nitrogen is a big barrier in plant growth

Ans 32: (Master Answer)

Class : Class 1

Ans 33:

Class : Class 5
It is certainly B as ashes of any organic matter makes soil fertile.

Ans 34:

Class : Class 6
i think it should be B..as ash acts as a fertilizer.

Ans 35:

Class : Class 8
WHAT! B is correct, not A. The answer is B, NOT A!

Ans 36:

Class : Class 5
How ??? It should be b.As ash is an organic matter. the process of nitrogen fixation will make the soil fertile . Please tell .Why????

Ans 37:

Class : Class 7

Ans 38:

Class : Class 9

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Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Answer: C

Ans 2:

Class : Class 5
Answer-C

Ans 3:

Class : Class 5
ANSWER-C

Ans 4:

Class : Class 9

Ans 5:

Class : Class 6
C

Ans 6:

Class : Class 5
answer b

Ans 7:

Class : Class 8
Answer: C

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
The answer is (c) Condition 1- There should be an area which includes all the shapes [options (b), (c) and (d) satisfy this condition] Condition 2- There should be an area which includes only the circle and triangle [only option (c) satisfies this condition] Therefore option (c) is correct

Ans 2:

Class : Class 8
option d is the correct answer

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
THE ANSWER IS THE OPTION D

Ans 2:

Class : Class 9
the answeer has been changed to D so please stop fighting especially Monica Sharma !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 3:

Class : Class 4

Ans 4:

Class : Class 9
Not all things will be written in the synopsis you have to read something from the book also.D option is correct.

Ans 5:

Class : Class 8
See this Refer to the solution

Ans 6:

Class : Class 6
you cant lift a car by your hands but you can when you are far so you cant lift the stone when you are near but you can lift it when you are far

Ans 7:

Class : Class 9
option D

Ans 8:

Class : Class 6
It should be d not b

Ans 9:

Class : Class 9
The solution is correct . The correct answer is D

Ans 10:

Class : Class 2
It is D. Imagine it this way. There is a heavy rock on the seesaw and we sit closer to the middle. It will be hard for us to go down and rock up. But if we sit at the edge of the seesaw, we will go down and the seesaw will go up.

Ans 11:

Class : Class 9
I DONT UNDERSTAND WHY IS IT D

Ans 12:

Class : Class 4
I DONT KNOW

Ans 13:

Class : Class 4
ans is d

Ans 14:

Class : Class 8
[url=http://ashematme.ru]ashematme.ru[/url]

Ans 15:

Class : Class 5
I agree option D

Ans 16:

Class : Class 9
The correct answer is D

Ans 17:

Class : Class 7
What is this?Well,the synponis does not say anything like this.How do you know?And Harry (Potter), I think you should really provide explanations when you say something like this.I think you don't provide explanations ever.

Ans 18:

Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7
Why C is incorrect answer? During Summer month at noon there will be shadow exactly under feet.

Ans 3:

Class : Class 9
It should be (b) because (c) shows that there is no shadow at noon, however even in summer, there is a small shadow at noon. Therefore the answer should be (b).

Ans 4:

Class : Class 8
I suppose that option'B' is the correct answer. If my thinkings are wrong, then please kindly make me understand with a reason i understand in simple words. If my answer is correct then please, please, please comment on it. My goal here is not to give long lectures, but to find the correct answer to this question.

Ans 5:

Class : Class 9
yes c is correct kindly rectify

Ans 6:

Class : Class 6
The answer should be C.

Ans 7:

Class : Class 6
I think it's option B, as at noon we do have a shadow although it's very small, it's not like there's no shadow at all. If my answer is wrong, kindly rectify

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 8
A

Ans 2:

Class : Class 6
A

Ans 3:

Class : Class 8
why is a the answer because they are crossing the road without looking

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