Author: Ali Jan

A. Thermometer
B. Viscometer
C. PH Scale
D. Stagmometer

Submitted by: Ali Jan

A. CFCs
B. CH3COOH
C. BOTH A & B
D. None Of These

Submitted by: Ali Jan

A. Chlorine
B. lithium
C. Helium
D. Neon

Submitted by: Ali Jan