Selenology is the study of __________?
A. Stars
B. Galaxy
C. Moon
D. Planets.
A. Stars
B. Galaxy
C. Moon
D. Planets.
Microphone converts sound energy into ___________?
A. Microwaves
B. Electrical signals
C. Optical Signals
D. Heat energy
SI unit of time is_________?
A. second
B. kilo gram
C. meter
D. volt
A. Edward Jenner
B. Laren
C. Karl Landsteiner
D. William Harvey
A. Carbon
B. Hard coal
C. Ammonia
D. None of these
Anthracite, often referred to as hard coal, is a hard, compact variety of coal that has a submetallic luster. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.
A. Muscle strength
B. Stability of the body
C. Range of motion
D. Muscle endurance
A. Heating
B. Beating
C. Artificial nuclear radioactivity
D. Chemical reaction