National Science Olympiad Forum By SOF Olympiad Trainer - Page 719

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Subject :NSO    Class : Class 1

Ans 1:

Class : Class 8
manit d is the answer

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
Options B and D are correct

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Correct answer is A !!! As it is having hair like structure so, it is carried by wind

Ans 2:

Class : Class 10
D

Ans 3:

Class : Class 10
I think that laksmi is saying correct because we cannot diffrentiate them as it is not clear that they are spines like in xanthium or feather like in dandelion

Ans 4:

Class : Class 9
Its B

Ans 5:

Class : Class 10
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 6:

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

Ans 7:

Class : Class 9
even I went with B

Ans 8:

Class : Class 8
it is dandelion isn't it??? i think it is wind because hair and size

Ans 9:

Class : Class 9
it has hair like structure

Ans 10:

Class : Class 6
It is Xanthium which is dispersed by animals.

Ans 11:

Class : Class 8
The Xanthium IS dispersed by animals

Ans 12:

Class : Class 6
The picture given did not look like xanthium neither dandelion ,so it looked like dandelion to me so I went with (B)Please give better images

Ans 13:

Class : Class 4
how is this possible

Ans 14:

Class : Class 9
Can't understand

Ans 15:

Class : Class 8

Ans 16:

Class : Class 6
the damn picture needs to be clear

Ans 17:

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 18:

Class : Class 5
The image looks nothing like cocklebur. It has to be a bit more clear,

Ans 19:

Class : Class 5

Ans 20:

Class : Class 10
The correct option is (C) or (B)?

Ans 21:

Class : Class 6
The correct answer should be B because it has a hairy structure and it can be dispersed by wind .nor its written that this is Xanthium

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
ans is a April 3 1984 not ans c

Ans 2:

Class : Class 6
No, it is actually none, it was on 2nd April 1984.

Ans 3:

Class : Class 8
the answer is 2nd april 1984 i got confused

Ans 4:

Class : Class 10

Ans 5:

Class : Class 10
Answer is A April 3, 1984

Ans 6:

Class : Class 7
IT IS JUST ON MY BIRTHDAY SO I REMEMBER IT. OPTION C IS THE ANSWER

Ans 7:

Class : Class 7
IT IS IN 1984 WHEN MY MOTHER WAS BORN.

Ans 8:

Class : Class 7
A is the answer to this question

Ans 9:

Class : Class 5
I HAD CONFUSION WITH A AND C

Ans 10:

Class : Class 10
(A) is the correct answer

Ans 11:

Class : Class 8
Hey, mathamagician. Uh it could also be April 3 since the dates might differ by a few days due to there being many sources.

Ans 12:

Class : Class 5

Ans 13:

Class : Class 10

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
(A) Nomads

Ans 2:

Class : Class 7
(D) IS THE ANSWER

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
Option a is correct.

Ans 2:

Class : Class 7
In option A, sunflower and paddy should be interchanged as sunflower has taproot and paddy has fibrous root system. Option D is the correct answer as wheat, maize and paddy have fibrous roots and sunflower, carrot and radish have taproot

Ans 3:

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

Ans 4:

Class : Class 7
the answer is d

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
B is the correct answer.

Ans 2:

Class : Class 7
b

Ans 3:

Class : Class 6
answer should be b

Ans 4:

Class : Class 6
According to me the answer is B.

Ans 5:

Class : Class 9

Ans 6:

Class : Class 6
The correct ans is B

Ans 7:

Class : Class 7
well we can say that ans d is correct because emu has both the features mentioned in the question while option b describes only one of them

Ans 8:

Class : Class 5
Answer is b

Ans 9:

Class : Class 5
C IS CORRECT

Ans 10:

Class : Class 10
Even I think the correct answer is B

Ans 11:

Class : Class 6
answer should be b right

Ans 12:

Class : Class 5
it is 'b'

Ans 13:

Class : Class 5
I think my answer is right

Ans 14:

Class : Class 6
the answer is B

Ans 15:

Class : Class 5
if you have problem please report it

Ans 16:

Class : Class 6
D is only correct as in option B they have given that Z can be emu but emu has both wings and feathers and it is a flightless bird

Ans 17:

Class : Class 5
The answer is d because they ask which is " INCORRECT", AND OPTION B IS THE CORRECT OPTION, AND BOTH A AND C ARE INCORRECT. AS THEY HAVE ASKED INCORRECTLY, THE ANSWER IS D, AS BOTH A AND C ARE WRONG.

Ans 18:

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

Ans 19:

Class : Class 4

Ans 20:

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

Ans 21:

Class : Class 8
d

Ans 22:

Class : Class 7
b

Ans 23:

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

Ans 24:

Class : Class 3
clearly answer B is correct

Ans 25:

Class : Class 10
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 26:

Class : Class 6
answer should be B

Ans 27:

Class : Class 3
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

Ans 28:

Class : Class 9
Mathamagician, we should not say anyone fool. Please keep in mind

Ans 29: (Master Answer)

Class : Class 1

Ans 30:

Class : Class 6
I thought it was c), but it is d). People who think it is b), are all fools

Ans 31:

Class : Class 7
the correct answer is D as in B there is no mention on what X is

Ans 32:

Class : Class 6
The correct answer is D

Ans 33:

Class : Class 4

Ans 34:

Class : Class 5
B is correct

Ans 35:

Class : Class 5
I DON'T UNDERSTAND, CLARIFY MY DOUBT QUICKLY SIR OR MADAM

Ans 36:

Class : Class 10
B

Ans 37:

Class : Class 6

Ans 38:

Class : Class 7
A is correct

Ans 39:

Class : Class 5
it is written select the incorrect statement

Ans 40:

Class : Class 7
Hey many people are thinking answer B is right .well, yeah according to me ans B is right .these SOF people really need to improve and update this app

Ans 41:

Class : Class 5
where is the solution

Ans 42:

Class : Class 5
B is the correct answer

Ans 43:

Class : Class 8
B is the correct answer. According to me

Ans 44:

Class : Class 7
SHOULD BE B

Ans 45:

Class : Class 9
according to me the correct answer is B

Ans 46:

Class : Class 9
A is only correct

Ans 47:

Class : Class 4

Ans 48:

Class : Class 4
c is the correct answer

Ans 49:

Class : Class 6
Answer D is correct

Ans 50:

Class : Class 10
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 51:

Class : Class 5
the answer is option D

Ans 52:

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

Ans 53:

Class : Class 6
the ans is *BBBBBBBBBBBBBBB*

Ans 54:

Class : Class 5
b answer, wrong question

Ans 55:

Class : Class 5
Dd

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

Ans 3:

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.

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

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