81. How many teeth does a dog have?
A. 42
B. 45
C. 46
D. 47
82. Gravitation force of earth is___________?
A. 9.80 m/s²
B. 7.21 m/s²
C. 1.62 m/s²
D. None of these
83. Any disease or infection that is naturally transmissible from vertebrate animals to humans is called?
A. Zonoses
B. Zoonoses
C. Ananoses
D. Chordnoses
84. Mach number is used in connection with the speed of___________?
A. Ship
B. Light
C. Sound
D. aircraft
85. If the level of atmospheric pollution increases:
A. The length of the day will increases
B. The length of the day will decreases
C. The length of the day will remain same
D. None of these
86. The natural source of hydrocarbon is:___________?
A. Crude oil
B. Biomass
C. Coal
D. Carbohydrates
87. Bt seed is associated with:___________?
A. Rice
B. Wheat
C. Cotton
D. Oilseed
88. Sound of frequency below 20 Hz is:___________?
A. Audiosonic
B. Infrasonic
C. Ultrasonic
D. Supersonic
89. What is the wavelength of visible spectrum:
A. 1300-3000A
B. 3900-7600A
C. 7800-8000A
D. None of these
90. Optic fibers are mainly used for which of the following:
A. Communication
B. Weaving
C. Food indudtry
D. None of these