National Science Olympiad Forum By SOF Olympiad Trainer - Page 290

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
ans c

Ans 2:

Class : Class 9
isnt the ans c?

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
answer is D ) this is because soap is alkaline in nature so p is alkaline then we can cancel out b or c then basic or alkaline substances turn red when rubbed on turmeric paper. hen they have mentioned in the answer that it has to be lemon juice and it contains citric acid or vitamin c the reaction turns it back to yellow that reaction is known as neutralization reaction

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
sentence one is correct , and the correct option in the question does not contain sentence 1 !!??how is this possible ???

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
isnt the meaning of 'compound' mixture?

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
This was given in SOF main exam for Class VII. I answered the question. I think the answer might be Option (d).

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

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