A. Liquid fuels
B. Coal
C. Hydroelectric power resources
D. Atomic energy
A. Adrenalin
B. Pancreatin
C. Throxin
D. Gastrin
A. Automobiles
B. Hydro-electric power project
C. Nuclear power plants
D. Thermal power plants
A. Refraction and dispersion
B. Reflection and interference
C. Reflection, refraction and dispersion
D. Interference
A. The solids have high elasticity
B. The atoms in solids are regularly arranged
C. The liquids have high elasticity
D. The atom in liquids are closely packed
A. Loss of Teeth
B. Sleeping sickness
C. Loss of hearing
D. Loss of memory
A. Frogs - Birds - Reptiles — Fishes — Mammals
B. Birds — Frogs — Reptiles — Mammals — Fishes
C. Fishes — Frogs — Reptiles — Birds — Mammals
D. Fishes — Reptiles — Frogs — Mammals — Birds
A. Gravitation and centripetal force
B. Gravitation and centrifugal force
C. Friction and centrifugal force
D. Gravitation and friction
A. Change in refractive index of air with change in temperature
B. Polarization of light on reflection
C. Total internal reflection
D. Absorption of light by air at higher temperature