Question

(21st century online learning institute)
Periodic Test
Unit - Metals and non metals
Subject : Science
Maximum time-45 min.
Class 10
Total m
1. Fill in the blanks
a. Cu2S acts as
agent in Bassemerisation process.
b. Casio3 is known as
in extraction of iron.
C. SO2 is the product of
of sulphide ores
d. ZnO can be reduced by.
2
e
forms greenish layer due to basic copper carbonate.​

Answer 1

Maximum time-45 min.Periodic Test