A substance which increases the efficiency of a catalyst is termed as:
A substance which increases the efficiency of a catalyst is termed as:
A. Promoter
B. Activator
C. Retarder
D. Super catalyst
A substance which increases the efficiency of a catalyst is termed as:
A. Promoter
B. Activator
C. Retarder
D. Super catalyst
A. Convex mirror
B. Concave mirror
C. Plane mirror
D. Both (b) and (c)
Founder of modern astronomy was _________________?
A. Archimedes
B. William Gilbert
C. Nicolas Copernicus
D. Michael Faraday
E. None of these
A. Anemometer
B. Battery
C. Galvanometer
D. Rectifier
A. lactic acid
B. citric acid
C. acetic acid
D. carbonic acid
A. Black paint
B. PVC
C. Teflon
D. polystyrene
A. Force
B. Mass
C. Weight
D. None of these