National Science Olympiad Forum By SOF Olympiad Trainer - Page 562

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
we realized the saree style is called Nawaree and its worn by a Maharashtrian lady. However its not NorthIndian its Western style

Ans 2:

Class : Class 9
its not the same saree .Nauvari saree is 9 meters against the 6 meters north indian saree

Ans 3:

Class : Class 7
The correct answer is A

Ans 4:

Class : Class 4
the answer should be D because the sarre is Maharastrain so the answer should D.

Ans 5:

Class : Class 8

Ans 6:

Class : Class 5
There are wrong options...The woman is wearing a Maharashtrian saree

Ans 7:

Class : Class 8
This is a dress worn by Maharstrian ladies. Maharasthra is not in the north India.It is part of Central India so, the correct answer should have been D.

Ans 8:

Class : Class 5
the corret ans shold be d not a

Ans 9:

Class : Class 6
D

Ans 10:

Class : Class 7

Ans 11:

Class : Class 6
Admin is right.

Ans 12:

Class : Class 9

Ans 13:

Class : Class 4
Hmm... But A and B almost makes similar sense.

Ans 14:

Class : Class 5

Ans 15: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 16:

Class : Class 4

Ans 17:

Class : Class 4
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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1

The correct answer is D.


Ans 2:

Class : Class 5
No, Ayva and my other friends who have a doubt... Remember that whenever any liquid while heating or boiling will not make its quantity decrease or increase. For Example -I heat 200ml of water until it started evaporating completely...it will not increase or decrease as I said earlier...it will remain 200ml only. That's why the answer is D.

Ans 3:

Class : Class 5
b's the answer

Ans 4:

Class : Class 5
d because all the water is evaporated

Ans 5:

Class : Class 7
some vapour will condense in the tube before they reach flask q making it 350 ml. and is b

Ans 6:

Class : Class 4
d is the ans

Ans 7:

Class : Class 6
Ayva is correct

Ans 8:

Class : Class 6
D

Ans 9:

Class : Class 7
The correct answer is D

Ans 10:

Class : Class 8
The correct answer is D

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8
A

Ans 2:

Class : Class 3
B

Ans 3:

Class : Class 4
C

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Subject :NSO    Class : Class 6

Refer to the given dichotomous key and select the incorrect statement regarding P, Q, R, S and T.

(i) (A) It is a natural fibre.- Go to (ii)
(B) It is a man-made fibre. -
(ii) (A) Fibre is obtained from plants.
- Go to (iii)
(B) Fibre is obtained from animals.
- Go to (iv)
(iii) (A) Fibre obtained from stem. -
(B) Fibre obtained from seed. -
(iv) (A) Fibre obtained by harming source organism. -
(B) Fibre obtained without harming source organism. -

A Fibre P is quick burning and shrinks away from flame giving slightly sweet chemical odour.
B Q could be obtained from Corchorus capsularis while R could be obtained from Gossypium hirsutum.
C Fibre S is obtained from an insect whereas fibre T is obtained from a mammal.
D Fabric made of S can be worn in all seasons whereas fibre Q can be used to make a raincoat.


Can't silk worn in all seasons???????????

Ans 1:

Class : Class 6
D is false as silk cannot be worn in all seasons .

Ans 2:

Class : Class 7
C is the answer

Ans 3:

Class : Class 10
That is why Silk cannot be worn in all seasons

Ans 4:

Class : Class 10
Silk can't be worn in monsoon and winter, because it is not waterproof and it does not trap heat.

Ans 5:

Class : Class 8
D -

Ans 6:

Class : Class 1
D cannot be an answer because raincoat cannot be made of jute

Ans 7:

Class : Class 8
d

Ans 8:

Class : Class 9
C

Ans 9:

Class : Class 8

Ans 10:

Class : Class 9
c should be the answer as silk is obtained from silkworm(insect) by harmingand wool,angora wool , etc are obtained without harming the mammal

Ans 11:

Class : Class 10
D

Ans 12:

Class : Class 10
D SHOULD BE THE CORRECT ANSWER

Ans 13:

Class : Class 7
(D) is totally false . raincoat is made from plastic only which is a man made fiber .

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4
Nothing has changed correct answer is B

Ans 2:

Class : Class 3

Ans 3:

Class : Class 4
B

Ans 4:

Class : Class 6

Ans 5:

Class : Class 8
No, the question is not wrong . X is a Gibbous moon . The correct answer is B.

Ans 6:

Class : Class 6

Ans 7:

Class : Class 4
the correct answer is C. As I feel there`s a miss print in a b c and d.

Ans 8:

Class : Class 3

Ans 9:

Class : Class 3
I cant understand why this question is wrong .

Ans 10:

Class : Class 6

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
I feel it is still not new moon as there are a couple of days for it to become a new moon.

Ans 2:

Class : Class 3

Ans 3:

Class : Class 4
I accepted my mistake.But still think there are a couple of days for it to become a new moon.

Ans 4:

Class : Class 8
The correct answer is A.

Ans 5:

Class : Class 4

Ans 6:

Class : Class 3
I acseped my mistake

Ans 7:

Class : Class 9
It should be new moon,because full moon takes 2 weeks to change into new moon.

Ans 8:

Class : Class 3

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
C) x y

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Subject :NSO    Class : Class 6

Read the given passage where some of the words have been italicised.
Cotton plant is annual shrub. It grows best in cold climate. Black soil is best suited for the cultivation of cotton plant. The stems of cotton plant are called cotton bolls. The seeds with cotton fibres are picked from the cotton bolls by hand. After picking the fibres are separated from the seeds by a process called combing.
Select the correct option regarding this.

A Annual should be replaced by biennial.
B Cold should not be replaced as it is correctly mentioned.
C Black should be replaced by yellow and stems should be replaced by fruits.
D Combing should be replaced by ginning.


answer is D

Ans 1:

Class : Class 8
d

Ans 2:

Class : Class 10
Ginning is a process used to separate cotton fibres from seeds while combing is the process of disentangling fibres

Ans 3:

Class : Class 6
correct answer should be d

Ans 4:

Class : Class 6
d is the answer

Ans 5:

Class : Class 6
It's D for sure guys

Ans 6:

Class : Class 10
ans is D

Ans 7:

Class : Class 6
correct ans is d

Ans 8:

Class : Class 6
D is correct, combing should be replaced by ginning

Ans 9:

Class : Class 6
yes combing should be replaced because combing is the process of of straitning cotton fibers

Ans 10:

Class : Class 8
CORRECT ANS IS D guys

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 3
I'm a simple girl who loves having fun chatting and meeting new people. You will always find me smiling and happy because nothing disturb me!

Ans 2:

Class : Class 3
C

Ans 3:

Class : Class 6

Ans 4:

Class : Class 5

Ans 5:

Class : Class 7
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Ans 6:

Class : Class 3
Shreshta the ans is not b coz in b precipitation is not happening condesation is happening that is why ans is c

Ans 7: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 8:

Class : Class 7
C it's C

Ans 9:

Class : Class 4
the answer is c but question is tricky

Ans 10:

Class : Class 7
CCCthe answer is C the ones who posted please see it is C

Ans 11:

Class : Class 5
it is c dont get confused with b

Ans 12:

Class : Class 2
The correct answer is ' c ' option

Ans 13:

Class : Class 4
PLEASE TELL THE REASON

Ans 14:

Class : Class 5
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