National Science Olympiad Forum By SOF Olympiad Trainer
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Preetha Joshi from ,
Subject :NSO    Class : Class 8

Ans 1:

Amitoj kaur kalsi from ,
Class : Class 8
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.

Ans 2:

Dr Anupa Ghosh from ,
Class : Class 8
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.

Post Your Answer

Pramath Ram from Canara CBSE, Mangalore
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A.

Post Your Answer

Pramath Ram from Canara CBSE, Mangalore
Subject :NSO    Class : Class 7

Ans 1:

Aaditya Gupta from Vidya Vikasini School ICSE, VASAI EAST
Class : Class 7
A

Post Your Answer

y hitesh Mohan from the indian public school, Erode
Subject :NSO    Class : Class 5

Post Your Answer

y hitesh Mohan from the indian public school, Erode
Subject :NSO    Class : Class 5

Post Your Answer

Preetha Joshi from ,
Subject :NSO    Class : Class 8

Ans 1:

Dr Anupa Ghosh from ,
Class : Class 8
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.

Post Your Answer

BEENA THOMAS from BCRS, Thiruvalla
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A.

Post Your Answer

BEENA THOMAS from BCRS, Thiruvalla
Subject :NSO    Class : Class 7

Ans 1:

Riddhiman from Wis, Udaipur
Class : Class 8
The question is incomplete

Post Your Answer

BEENA THOMAS from BCRS, Thiruvalla
Subject :NSO    Class : Class 7

Ans 1:

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 :)

Post Your Answer

BEENA THOMAS from BCRS, Thiruvalla
Subject :NSO    Class : Class 7

Ans 1:

Navjeet from Bhatnagar international school , New Delhi
Class : Class 7

Ans 2:

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:

Dhruvan G from Indian School Al Ghubra, Muscat
Class : Class 8
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.

Post Your Answer