Page 3 - X-CHEM-CBQ-CH-3
P. 3
A) Highly reactive metal i) S
B) Calcination ii) T
C) Electrolytic reduction iii) P
D) Less reactive metal iv) R
E) Roasting v) Q
8. The given apparatus shows the reaction of steam with heated solid 'X'.
The equation for the reaction is
Steam + solid 'X' → Solid 'Y' + Gas 'Z'
X, Y and Z are respectively:-
a) Copper, Copper oxide, Oxygen
b) Lead, Lead oxide, Hydrogen
c) Silver, Silver oxide, oxygen
d) Iron, Iron oxide, Hydrogen
9. Some properties of substances P, Q, R and S are given in the table :
Which of the given substances represents a gaseous non-metal at room
temperature ?
10. Krissh, a class 10 student wanted to study the speed of reactions of different
acids with zinc metal. For this, she conducted the following experiments using
zinc metal in excess.
