A. mental and physical state of mankind
B. cultivation of trees and vegetables
C. None of above
A. alpha rays
B. beta rays
C. gamma rays
D. X-rays
E. Both a, b & c
A. only real images
B. only virtual images
C. both real and virtual images
D. only inverted images
A. Sugars
B. Amino acids
C. Fatty acids
D. Nucleic acids
A. 4,000 and 5,000/mm3
B. 4,000 and 8,000/mm3
C. 4,000 and 13,000/mm3
D. None of above
A. Infrasonic
B. Ultrasonic
C. Hypersonic
D. Supersonic
A. sultry conditions
B. storms
C. strong icy wind’s
D. clear calm weather
A. meteors
B. meteorites
C. asteroids
D. satellites
A. the climate (or weather) of a given place
B. clouds and other such phenomena
C. electrical discharges in the atmosphere
D. the conditions that determine rainfall
A. atmospheric pressure
B. the direction of the ship
C. electric current
D. wind velocity
