National Science Olympiad Forum By SOF Olympiad Trainer - Page 702

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Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

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 3:

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 4:

Class : Class 3
Answer is option - (C)

Ans 5:

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

Ans 6:

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

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

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

Ans 3:

Class : Class 6

Ans 4:

Class : Class 6

Ans 5:

Class : Class 7
Cotton is the cheapest right??

Ans 6:

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 7:

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

Ans 8:

Class : Class 7
cotton' is the cheapest natural fibre

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

Ans 11:

Class : Class 7
The answer is b right?

Ans 12:

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

Ans 13:

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

Ans 14:

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

Ans 15:

Class : Class 8

Ans 16:

Class : Class 6
The answer is not b

Ans 17:

Class : Class 8

Ans 18:

Class : Class 9
Answer is d

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
correct answer is a

Ans 2:

Class : Class 6
The correct answer is (A)

Ans 3:

Class : Class 7

Ans 4:

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

Ans 5:

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

Ans 6:

Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
d

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8
Bengluru poor science schools

Ans 4:

Class : Class 6

Ans 5:

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

Ans 6:

Class : Class 6

Ans 7:

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 8:

Class : Class 6

Ans 9:

Class : Class 6

Ans 10:

Class : Class 8
there were multiple wrong answers

Ans 11:

Class : Class 6

Ans 12:

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

Ans 13:

Class : Class 1

Ans 14:

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 15:

Class : Class 10

Ans 16:

Class : Class 6

Ans 17:

Class : Class 9

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
it is very hard

Ans 2:

Class : Class 7
Yesssssssssssss

Ans 3:

Class : Class 3
Yessssss

Ans 4:

Class : Class 5
yessssssssssssssssss

Ans 5:

Class : Class 4

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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 10
opt c is correct

Ans 3:

Class : Class 9
Option A

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

Class : Class 6
The answer is A

Ans 3:

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 4:

Class : Class 6
the answer is A.

Ans 5:

Class : Class 9
What is centrifugation

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
c as it is facing opposite side

Ans 2:

Class : Class 7
option c is opposite like all the letters in the figure

Ans 3:

Class : Class 3
The question has all mirror images...... So answer has to be a mirror image.

Ans 4:

Class : Class 9

Ans 5:

Class : Class 9
Yes , the answer is C .

Ans 6:

Class : Class 7
becase in the figure all the letters seem to be in the opposite direction while options a b and d are not showing them in th opposite direction and option c is showing

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