National Science Olympiad Forum By SOF Olympiad Trainer - Page 846
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Preetha Joshi from ,
Subject :NSO    Class : Class 8

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prabhkhelSingh from Hra international school, Gurdaspur
Class : Class 6
correct answer is D because in the reactivity series,copper lies below hydrogen which means that hydrogen cannot be displaced by copper from its salt solution.

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from ,
Class :
The correct option is D. Because if you see the reactivity table copper is placed below hydrogen.So it is not more reactive than hydrogen and cannot replace it from its compound.

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from ,
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

from ,
Class :
The correct answer is A.

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from ,
Subject :NSO    Class : Class 7

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from ,
Class :
A

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y rahaav karthikeyan from the indian public school, TIRUCHENGODE
Subject :NSO    Class : Class 5

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y rahaav karthikeyan from the indian public school, TIRUCHENGODE
Subject :NSO    Class : Class 5

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Preetha Joshi from ,
Subject :NSO    Class : Class 8

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from ,
Class :
The use of electroplating is more widely seen in industries than electrolysis. Actually,decomposition of water is not so much required in industries than plating of metals.

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from ,
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

from ,
Class :
The correct answer is A.

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from ,
Subject :NSO    Class : Class 7

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from ,
Class :
The question is incomplete

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from ,
Subject :NSO    Class : Class 7

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Aparajita from Mount Litera Zee School, Vasco da gama
Class : Class 8
Option C because soap is a basic substance while the curry is acidic :)

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from ,
Subject :NSO    Class : Class 7

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from ,
Class :

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Aparajita from Mount Litera Zee School, Vasco da gama
Class : Class 8
The answer is Option D. Cuscuta depends on other plant for certain food requirements and with the help of that it conducts Photosynthesis :)

Ans 3:

from ,
Class :
Cuscuta doesn't have chlorophyll to carry out photosynthesis but. Nepenthes(A) is a pitcher plant which carries out photosynthesis but depends on insects(B) for it's nitrogen as it lives in nitrogen deficient soil.

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