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

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