National Science Olympiad Forum By SOF Olympiad Trainer - Page 657

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
Its a Mosquito. It sucks blood. The answer is A.

Ans 2:

Class : Class 3

Ans 3:

Class : Class 6

Ans 4:

Class : Class 3
I’m saying the same term of Anush nikam

Ans 5:

Class : Class 6
D

Ans 6:

Class : Class 3
It’s mosquito..it sucks blood so answer is A

Ans 7:

Class : Class 3
C'mon . In correct answer they are showing B and in solution they are showing A . I mean , at least somebody should check the system for errors

Ans 8:

Class : Class 3
The correct ans is D

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Subject :NSO    Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
they give two answer correct and but one of the two are the right answers

Ans 2:

Class : Class 6
D

Ans 3:

Class : Class 7
a c d are correct

Ans 4:

Class : Class 5
P is made up of iron so a is wrong

Ans 5:

Class : Class 7
sof is dumb nearly all answers are given wrong

Ans 6:

Class : Class 6
No, the inner core is actually made up of iron and nickel.

Ans 7:

Class : Class 1
I do not think that all answers and words of synopsis is correct

Ans 8:

Class : Class 1

Ans 9:

Class : Class 5
D

Ans 10:

Class : Class 3
you fools i found the correct answer d

Ans 11:

Class : Class 5
answer is d because core is innermost layer of earth so it could be made up of nicel and iron

Ans 12:

Class : Class 5
no c is correct ans

Ans 13:

Class : Class 6
ans is d

Ans 14:

Class : Class 7
ANSWER IS 'D'

Ans 15:

Class : Class 4
The answer is {D}

Ans 16:

Class : Class 5
ans is d

Ans 17:

Class : Class 6

Ans 18:

Class : Class 9
D drives me crazy

Ans 19:

Class : Class 5
answer is D

Ans 20:

Class : Class 6
Correct option is D because mineral deposits are found on the crust of the Earth

Ans 21:

Class : Class 7
d correct ans

Ans 22:

Class : Class 4
Answer is = D

Ans 23:

Class : Class 7
A and D. are the correct answer

Ans 24:

Class : Class 8
you are correct it doesnt update it self every year

Ans 25:

Class : Class 4
P is the molten part made up of nickel and iron(p is not molten). R is the hottest part of Earth which is solid( P is the hottest part of Earth which is solid).Q is connected to surface with the help of volcanoes( R actually has magma in it ). Minerals and oil deposits are found in the part S. and option D is only corect

Ans 26:

Class : Class 7
Class:Class:Class:VERY HARD

Ans 27:

Class : Class 5
D

Ans 28:

Class : Class 7
The answer is D

Ans 29: (Master Answer)

Class : Class 1

Ans 30:

Class : Class 5
D

Ans 31:

Class : Class 6
ans d

Ans 32:

Class : Class 5
you all are mads. D , A are correct options

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Subject :NSO    Class : Class 5

A large area of forest was destroyed completely by forest fire. Which of the following statements hold(s) true regarding it?

(i) More soil will be eroded as the soil is not protected by trees from wind and rain.
(ii) The land will have more fresh air as there are lesser trees to take in oxygen.
(iii) Wildlife will inhabit the cleared area because more space is available now.
(iv) New trees will grow quickly to replace the burnt ones as the ash of the burnt trees will make the soil more fertile.

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


the answer should be option B not A because ash does act like a natural fertiliser ,. I have already searched on the internet .

Ans 1:

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

Ans 2:

Class : Class 6
B should be the correct answer

Ans 3:

Class : Class 5
the answer is B.

Ans 4:

Class : Class 8
Answer is B as ash is an organic

Ans 5:

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 6:

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 7:

Class : Class 6
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 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

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

Ans 12:

Class : Class 4
I think B is the correct answer

Ans 13:

Class : Class 7
BBBB IS THE ANSWER

Ans 14:

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

Ans 15:

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 16:

Class : Class 9

Ans 17:

Class : Class 5

Ans 18: (Master Answer)

Class : Class 1

Ans 19:

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 20:

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

Ans 21:

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 22:

Class : Class 7
The answer should be B.

Ans 23:

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 24:

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

Ans 25:

Class : Class 9
I think the answer is B

Ans 26:

Class : Class 5

Ans 27:

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 28:

Class : Class 8
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 29:

Class : Class 6
ddddddd

Ans 30:

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 31:

Class : Class 7

Ans 32:

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 33:

Class : Class 7
WHAT! B is correct, not A. The answer is B, NOT A!

Ans 34:

Class : Class 9
B is the correct answer

Ans 35:

Class : Class 7
B is the answer!

Ans 36:

Class : Class 8
I agree with Ishan as trees cannot grow very quickly...But I did B at my first attempt

Ans 37:

Class : Class 8
Ash is an organic matter so the answer should be B

Ans 38:

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

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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 5
ANSWER-C

Ans 2:

Class : Class 9

Ans 3:

Class : Class 5
answer b

Ans 4:

Class : Class 8
Answer: C

Ans 5:

Class : Class 6
C

Ans 6:

Class : Class 5
Answer-C

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 8
option d is the correct answer

Ans 2:

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

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