National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
it is dandelion isn't it??? i think it is wind because hair and size

Ans 2:

Class : Class 5
it is C as it is a Xanthium

Ans 3:

Class : Class 7
You are correct ans. is B wind because it seems to be light in weight and also hairs that acts like feathers and also wind can carry only light weight seeds.

Ans 4:

Class : Class 6

Ans 5:

Class : Class 7
D

Ans 6:

Class : Class 4
The picture is not clear and it cannot be said that it is a xanthium neither can it be said it is a dandelion. I went with B. Please show better qualities pictures sof.

Ans 7:

Class : Class 5
It is Xanthium which is dispersed by animals.

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
Answer is A April 3, 1984

Ans 2:

Class : Class 5
I HAD CONFUSION WITH A AND C

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7

Ans 5:

Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
(A) Nomads

Ans 2:

Class : Class 6
(D) IS THE ANSWER

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
Option a is correct.

Ans 2:

Class : Class 7
the answer is d

Ans 3:

Class : Class 8
OPTION A IS CORRECT NO CHANCE OF WRONG

Post Your Answer

Subject :NSO    Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
c is the correct answer

Ans 2:

Class : Class 5
Even I think the correct answer is B

Ans 3:

Class : Class 4
The answer has to be b. Come on SOF.

Ans 4:

Class : Class 2
according to me the correct answer is B

Ans 5:

Class : Class 5
According to me the answer is B.

Ans 6:

Class : Class 5
answer should be B

Ans 7:

Class : Class 5
clearly answer B is correct

Ans 8:

Class : Class 4

Ans 9:

Class : Class 5
C IS CORRECT

Ans 10:

Class : Class 5
The question cannot mention all the features of a bird . And , the correct answer should be B only !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 11:

Class : Class 5
d

Ans 12:

Class : Class 5
the answer is B

Ans 13:

Class : Class 6
you both are wrong.the correct answer is B

Ans 14:

Class : Class 5
But the correct answer according to SOF is option D

Ans 15:

Class : Class 6

Ans 16:

Class : Class 4

Ans 17:

Class : Class 4
The correct answer is D

Ans 18:

Class : Class 5
the correct answer is D as in B there is no mention on what X is

Ans 19:

Class : Class 6
A is correct

Ans 20:

Class : Class 6
Organism X is actually emu, because it has wings AND feathers. So correct answer is D.Answer B however is wrong, as it tells emus ONLY have feathers. Answer C is wrong as organism X can be any bird, even penguins. And answer A is also wrong as bats don't have feathers and ostriches have wings too.

Ans 21:

Class : Class 5
B

Ans 22:

Class : Class 2

Ans 23:

Class : Class 6
Answer D is correct

Ans 24:

Class : Class 5
I think my answer is right

Ans 25:

Class : Class 6
you both are wrong.the correct answer is B

Ans 26:

Class : Class 5
Fe facts:1) Ostriches have wings, though it is not used for flying.2) Bats do not have feathers. They have hairs like other mammals.3) Emu has wings and again not used for flying.4) A penguin has feathers.5) Almost all birds have wings and feathers.So, option D is the only one that seems right.

Ans 27:

Class : Class 6
Bats have wings and no feathers. Ostriches and Emus have both feathers and wings, but they can’t fly mainly due to their huge size. Penguins have feathers and flippers (not wings). “A” is incorrect as bats doesn’t have feathers. “B” is incorrect as penguins doesn’t have wings. “C” is incorrect as there are birds that has both feathers and wings. “D” is the correct answer

Post Your Answer

Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
oil has a low boiling point than water. Therefore we use oil to make the cooking process faster and easier

Ans 2:

Class : Class 9
We fry stuff in oil because oil has much higher boiling point in comparison to water. So after heating when oil reaches temperatures greater than the boiling point of water (100 C) it instantly vaporize the water present in food into steam. ... Oil fries it and gives a crispy texture.

Ans 3:

Class : Class 9
oil has a low boiling point than water. Therefore we use oil to make the cooking process faster and easier

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

Post Your Answer

Subject :NSO    Class : Class 2

Ans 1:

Class : Class 7

Ans 2:

Class : Class 3
a is the answer

Ans 3:

Class : Class 2
a is theaa is the answer.

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
I think it's option (C) as plastic bags are harmful for environment.

Ans 2:

Class : Class 8
I think it's option (C) as plastic bags are harmful for environment.

Post Your Answer