Subject :NSO Class : Class 9
Four students were given small pieces of materials P, Q, R and S respectively. They observed the reactions of these materials as follows :
According to them, materials P, Q, R and S respectively are
AFe, Cu, Na, P
BNa, Fe, P, Cu
CP, Fe, Na, Cu
DCu, P, Na, Fe
Ans 1:
Class : Class 10
C