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 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 2:

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 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

Class : Class 9
Its B

Ans 7:

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 8:

Class : Class 9
even I went with B

Ans 9:

Class : Class 9
Can't understand

Ans 10:

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 11:

Class : Class 6
the damn picture needs to be clear

Ans 12:

Class : Class 8
The Xanthium IS dispersed by animals

Ans 13:

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

Ans 14:

Class : Class 5

Ans 15:

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 16:

Class : Class 9
it has hair like structure

Ans 17:

Class : Class 10
D

Ans 18:

Class : Class 8

Ans 19:

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

Ans 20:

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

Ans 21:

Class : Class 4
how is this possible

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Subject :NSO    Class : Class 5

Ans 1:

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 2:

Class : Class 5
I HAD CONFUSION WITH A AND C

Ans 3:

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

Ans 4:

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

Ans 5:

Class : Class 10
Answer is A April 3, 1984

Ans 6:

Class : Class 5

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

Class : Class 10

Ans 11:

Class : Class 7
A is the answer to this question

Ans 12:

Class : Class 10

Ans 13:

Class : Class 10
(A) is the correct answer

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7
(D) IS THE ANSWER

Ans 2:

Class : Class 5
(A) Nomads

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
the answer is d

Ans 2:

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

Ans 3:

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 4:

Class : Class 7
Option a is correct.

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4

Ans 2:

Class : Class 6
Answer D is correct

Ans 3:

Class : Class 8
d

Ans 4:

Class : Class 9
A is only correct

Ans 5:

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

Ans 6:

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

Ans 7:

Class : Class 4

Ans 8:

Class : Class 6
The correct ans is B

Ans 9:

Class : Class 5
Answer is b

Ans 10:

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

Ans 11:

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

Ans 12:

Class : Class 5
where is the solution

Ans 13:

Class : Class 6
answer should be B

Ans 14:

Class : Class 5
B is the correct answer

Ans 15:

Class : Class 6
the answer is B

Ans 16:

Class : Class 5
if you have problem please report it

Ans 17:

Class : Class 4

Ans 18:

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 19:

Class : Class 5
it is 'b'

Ans 20:

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 21:

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

Ans 22:

Class : Class 5
Dd

Ans 23:

Class : Class 7
A is correct

Ans 24:

Class : Class 6
answer should be b right

Ans 25:

Class : Class 10
B

Ans 26:

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

Ans 27:

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

Ans 28:

Class : Class 3
clearly answer B is correct

Ans 29:

Class : Class 5
B is correct

Ans 30:

Class : Class 5
it is written select the incorrect statement

Ans 31:

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

Ans 32: (Master Answer)

Class : Class 1

Ans 33:

Class : Class 4
c is the correct answer

Ans 34:

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 35:

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

Ans 36:

Class : Class 5
b answer, wrong question

Ans 37:

Class : Class 5
the answer is option D

Ans 38:

Class : Class 6

Ans 39:

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 40:

Class : Class 7
SHOULD BE B

Ans 41:

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

Ans 42:

Class : Class 5
C IS CORRECT

Ans 43:

Class : Class 6
The correct answer is D

Ans 44:

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 45:

Class : Class 7
b

Ans 46:

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 47:

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

Ans 48:

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

Ans 49:

Class : Class 6
answer should be b

Ans 50:

Class : Class 6
the ans is *BBBBBBBBBBBBBBB*

Ans 51:

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 52:

Class : Class 5
I think my answer is right

Ans 53:

Class : Class 9
B is the correct answer.

Ans 54:

Class : Class 9

Ans 55:

Class : Class 7
b

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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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