National Science Olympiad Forum By SOF Olympiad Trainer - Page 702

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
very confusing question. Answer is option a.

Ans 2:

Class : Class 10
A

Ans 3:

Class : Class 10
A

Ans 4:

Class : Class 7

Ans 5:

Class : Class 8
very important question .the main fanda is to understand the question/words. the answer is option A

Ans 6:

Class : Class 9

Ans 7:

Class : Class 8

Ans 8:

Class : Class 8
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Ans 9:

Class : Class 7
A

Ans 10:

Class : Class 7
A

Ans 11:

Class : Class 6
a

Ans 12:

Class : Class 8

Ans 13:

Class : Class 9

Ans 14:

Class : Class 2
Answer : A

Ans 15:

Class : Class 10
a

Ans 16:

Class : Class 9

Ans 17:

Class : Class 9
the correct answer is a

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
answer should be [d] since Jute comes from the stem of the jute plant and wool is sheared from sheeps etc. without harming the animal.

Ans 2:

Class : Class 6
ANS is (a)and(c)Flax is obtained from plant stemSilk is obtained by harming silkworm

Ans 3:

Class : Class 9
Answer should be C ......

Ans 4:

Class : Class 3
Answer is option - (C)

Ans 5:

Class : Class 9
Answer is (c). Because flax is used to make linen which is obtained from flax stem. Wool is made from sheep's hair without harming it.

Ans 6:

Class : Class 6
Answer should be (c). Flax is obtained from stem of flax stem and wool is obtained without harming the sheep

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
cotton' is the cheapest natural fibre

Ans 2:

Class : Class 6

Ans 3:

Class : Class 8

Ans 4:

Class : Class 6
The answer is not b

Ans 5:

Class : Class 6

Ans 6:

Class : Class 7
I think that cotton is the cheapest natural material , not jute and so does a sof help desk employee

Ans 7:

Class : Class 6
i did c because they are from seeds too but most are stems so d

Ans 8:

Class : Class 6
Jute is the cheapest natural fibre,not cotton!

Ans 9:

Class : Class 3
The Answer is option D because Jute is known as the golden fibre and the process mentioned in the question is known as ginning

Ans 10:

Class : Class 7
The answer is b right?

Ans 11:

Class : Class 9
Flax is obtained from stem and jute is the cheapest natural fibre . So , the answer is D

Ans 12:

Class : Class 8

Ans 13:

Class : Class 6
The correct answer is (D) as jute is the cheapest fibre . and stem of the flax plant provides fibres

Ans 14:

Class : Class 8

Ans 15:

Class : Class 6
I think cotton is the cheapest, but the answer says jute is cheapest. So which is right C or D?

Ans 16:

Class : Class 9
Answer is d

Ans 17:

Class : Class 8
I think Cotton is the cheapest fibre and someone from SOF help desk also says the same and the process of seperating cotton from cotton seeds is called Ginning only

Ans 18:

Class : Class 7
Cotton is the cheapest right??

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
correct answer is a

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6
angora wool is obtain by angora rabbit and not angora sheep. Coir is obtained by the husk of a coconut

Ans 4:

Class : Class 6
angora wool is obtain by angora rabbit and not angora sheep. Coir is the outer covering of coconut

Ans 5:

Class : Class 6
The correct answer is (A)

Ans 6:

Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9

Ans 2:

Class : Class 3
Cotton is not obtained from seed of plant so cotton can not be S!

Ans 3:

Class : Class 8

Ans 4:

Class : Class 6

Ans 5:

Class : Class 1

Ans 6:

Class : Class 6

Ans 7:

Class : Class 8
Bengluru poor science schools

Ans 8:

Class : Class 6

Ans 9:

Class : Class 9
d

Ans 10:

Class : Class 6

Ans 11:

Class : Class 10

Ans 12:

Class : Class 6

Ans 13:

Class : Class 7
The correct Ans is D because In the given flow chart, P is an animal fibre like wool or silk. Q could be jute, flax or hemp. R is sisal and S is cotton. Wool is used in winter clothing while cotton is used for summer clothing. Plant stem fibres like jute, flax, hemp are generally used for making bags, ropes, carpets, etc. Sisal which is a leaf fibre is also used for almost same purposes.

Ans 14:

Class : Class 6
cotton fibre is obtained from the fruit of the cotton plant

Ans 15:

Class : Class 6

Ans 16:

Class : Class 8
how can wool/silk and cotton be excellent winter clothing. WOrst option. And Nishka Rawat - Fibres from cotton are obtained from seeds. WOrst science readers................. Worst option too for Sof trainer

Ans 17:

Class : Class 8
there were multiple wrong answers

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
yessssssssssssssssss

Ans 2:

Class : Class 4

Ans 3:

Class : Class 7
Yesssssssssssss

Ans 4:

Class : Class 3
Yessssss

Ans 5:

Class : Class 3
it is very hard

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
The answer is option “c”. see it was boiling water, she poured first into container “a” so it will be having the highest temperature than she poured to container b than to c and finally to container d so during this experiment the boiling water goes to lowest temperature and the last container was container d . So container a will be having the highest temperature and container d will be having the lowest temperature.

Ans 2:

Class : Class 5
Thanks Aamena

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
Option D

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 7
a

Ans 2:

Class : Class 9
Option A

Ans 3:

Class : Class 10
opt c is correct

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
The answer is A

Ans 2:

Class : Class 6
the answer is A.

Ans 3:

Class : Class 9
What is centrifugation

Ans 4:

Class : Class 6
centrifugation is a process in which a substance is spun at a very high speed to separate minute particles. For eg. Blood is spun at a high speed to separate particles such as red and white blood cells, plasma platelets, and plasma.

Ans 5:

Class : Class 8

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