Question

SAIBABA CENTRAL SCHOOL, ONGOLE
CLASS - VIL SUBJECT. PHYSICAL SCIENCE
WORK SHEET-7.PHYSICAL & CHEMICAL CHANGES
1. Fill in the blanks.
1. The series in which metals are placed in the decreasing order
of their reactivity is known as​

Answer 1

Answer:

These metals are known as noble metals.

Answer 2

Answer:

noble metals is the ans