National Science Olympiad Forum By SOF Olympiad Trainer - Page 719

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
how is this possible

Ans 2:

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

Ans 3:

Class : Class 9
Can't understand

Ans 4:

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 5:

Class : Class 9
it has hair like structure

Ans 6:

Class : Class 8
The Xanthium IS dispersed by animals

Ans 7:

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

Ans 8:

Class : Class 8

Ans 9:

Class : Class 6
the damn picture needs to be clear

Ans 10:

Class : Class 10
D

Ans 11:

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

Ans 12:

Class : Class 9
even I went with B

Ans 13:

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 14:

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 15:

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

Ans 16:

Class : Class 9
Its B

Ans 17:

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

Ans 18:

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

Ans 19:

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 20:

Class : Class 5

Ans 21:

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

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
I HAD CONFUSION WITH A AND C

Ans 2:

Class : Class 10

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

Class : Class 10

Ans 7:

Class : Class 10
Answer is A April 3, 1984

Ans 8:

Class : Class 7
A is the answer to this question

Ans 9:

Class : Class 10
(A) is the correct answer

Ans 10:

Class : Class 5

Ans 11:

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

Ans 12:

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

Ans 13:

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.

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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 8
OPTION A IS CORRECT NO CHANCE OF WRONG

Ans 2:

Class : Class 7
the answer is d

Ans 3:

Class : Class 7
Option a is correct.

Ans 4:

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

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
answer should be b

Ans 2:

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

Ans 3:

Class : Class 5
Answer is b

Ans 4:

Class : Class 5
B is the correct answer

Ans 5:

Class : Class 9
B is the correct answer.

Ans 6:

Class : Class 5
b answer, wrong question

Ans 7:

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 8:

Class : Class 5
B is correct

Ans 9:

Class : Class 7
b

Ans 10:

Class : Class 7
A is correct

Ans 11:

Class : Class 6
answer should be B

Ans 12:

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 13:

Class : Class 4

Ans 14:

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

Ans 15:

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 16:

Class : Class 6
the ans is *BBBBBBBBBBBBBBB*

Ans 17:

Class : Class 7
b

Ans 18:

Class : Class 5
it is written select the incorrect statement

Ans 19:

Class : Class 6
the answer is B

Ans 20:

Class : Class 4

Ans 21:

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

Ans 22:

Class : Class 6
The correct ans is B

Ans 23:

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

Ans 24:

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

Ans 25: (Master Answer)

Class : Class 1

Ans 26:

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

Ans 27:

Class : Class 9

Ans 28:

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

Ans 29:

Class : Class 5
I think my answer is right

Ans 30:

Class : Class 5
where is the solution

Ans 31:

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 32:

Class : Class 5
Dd

Ans 33:

Class : Class 6

Ans 34:

Class : Class 4

Ans 35:

Class : Class 3
clearly answer B is correct

Ans 36:

Class : Class 6
The correct answer is D

Ans 37:

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 38:

Class : Class 5
if you have problem please report it

Ans 39:

Class : Class 5
C IS CORRECT

Ans 40:

Class : Class 10
B

Ans 41:

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 42:

Class : Class 6
Answer D is correct

Ans 43:

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

Ans 44:

Class : Class 6
answer should be b right

Ans 45:

Class : Class 9
A is only correct

Ans 46:

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

Ans 47:

Class : Class 8
d

Ans 48:

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

Ans 49:

Class : Class 4
c is the correct answer

Ans 50:

Class : Class 7
SHOULD BE B

Ans 51:

Class : Class 5
it is 'b'

Ans 52:

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

Ans 53:

Class : Class 5
the answer is option D

Ans 54:

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

Ans 55:

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

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Subject :NSO    Class : Class 9

Ans 1:

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

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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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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 4
The answer is D as the pictures given have different hazards.

Ans 2:

Class : Class 6
a is theaa is the answer.

Ans 3:

Class : Class 8
a is the answer

Ans 4:

Class : Class 8

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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.

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