National Science Olympiad Forum By SOF Olympiad Trainer - Page 604

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Subject :NSO    Class : Class 3

Ans 1:

Class :
B is the correct answer.

Ans 2:

Class : Class 4
Answer is B

Ans 3:

Class : Class 8
In thunder storms we see the lightning comes first and the sound comes after the lightning.

Ans 4:

Class :
B

Ans 5:

Class : Class 4
HOW

Ans 6:

Class : Class 3
how can that happen?

Ans 7:

Class : Class 3
yah B is the correct answer

Ans 8:

Class : Class 9

Ans 9:

Class : Class 4
yes true because mast of the time when we go to mountains are voice echo because as we are at the height and there is a gap between them so in the gap it is deep below us and there is water also like valley and when thunder comes it comes from water only and the voice echos every where

Ans 10:

Class : Class 4
How B is correct

Ans 11:

Class : Class 8
B

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Subject :NSO    Class : Class 3

Ans 1:

Class :
D

Ans 2:

Class : Class 4

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
A is the ans

Ans 2:

Class : Class 5
a

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
c

Ans 2:

Class : Class 8
It's answer could be C option.

Ans 3:

Class : Class 10
It can be all

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
It's answer could be A option because the mirror is above all 4 persons.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4

Ans 2:

Class : Class 7
Sia Parekh from Pawar Public School BHANDUP Class: 3A

Ans 3:

Class : Class 3

Ans 4:

Class : Class 9
C

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
i think the answer is winnowing and threshing

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
the pic is not clear so i can not understand what they want to say.

Ans 2:

Class : Class 6
what the heck is a solar cooker

Ans 3:

Class : Class 6
Ans is D because in this picture it is a pizza maker which was used in olden days.

Ans 4:

Class : Class 5
arent options A and D the same thing?

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8

Ans 2:

Class : Class 4

Ans 3:

Class : Class 9
c

Ans 4:

Class : Class 6

Ans 5:

Class : Class 5

Ans 6:

Class : Class 9
A is the correct answer .....

Ans 7:

Class : Class 4
D 'cause it's blurry

Ans 8:

Class : Class 5
A

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 10
niten mohan : initially the reaction is neutral when lemon juice is added to magnesium hydroxide but if we kkep on adding more and more lemon juice one point will come when all the magnesium hydroxide will be neutrialised and the extra lemon juice will result acidic solution at the end. Ex : 25ml Mg(OH)2 35ml citric acid=acidic solution because 10 ml of extra citric acid.

Ans 2:

Class : Class 7
if we will add onlya drop of lemon juice to Mgoh then i would have a neutralizationb reactioj but it will not be very effective on it as it is a organic acid agais a strong acid

Ans 3:

Class :
when the resulting solution is neutral why is point 2- It turns blue litmus red,correct ?

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