Q.16:Human body temperature is
[A] 370C (° C)
[B] 98.60F (degree F)
[C] 99.60F (degree F)
[D] Both (A) and (B)
Q.17: At which temperature is the volume of water minimum and density maximum?
[A] 40C
[B] 50C
[C] 70C
[D] 00C
Q.18:Speed of sound in dry air is-?
[A] 180000 km / s.
[B] 6400 km / s.
[C] 332 m / s.
[D] 764 m / s.
Q.19: One light year is equal to?
[A] 9.46 x 1015 m
[B] 8.46 x 1015 km
[C] 9.46 x 109 m
[D] Both (A) and (B)
Q.20: Properties of inertia –
[A] Everything contains
[B] in something
[C] Nothing happens
[D] only happens in moving object
Q.21: SI unit of work is?
[A] joule
[B] Calvin
[C] calories
[D] horsepower
Q.22: Which pair is not correctly matched
Equipment – (Energy conversion)
[A] Microphone – (electrical energy of sound energy)
[B] Loudspeaker – (Sound energy of electrical energy)
[C] Dynamo – (electrical energy of mechanical energy)
[D] sitar – (mechanical energy of sound energy)
Q.23: 1 horse power is equal?
?
[A] 776 watts
[B] 746 watts
[C] 11000 watts
[D] 4200 watts
Q.24: From which motion law of Newton is the expression of force obtained?
[A] First of the rule of motion
[B] Second of the Gati rule
[C]Third of the rule of motion
[D] to none
Q.25: Pressure above the surface of the Earth –
[A] decreases
[B] increases
[C] remains unchanged
[D] ALL OF THE ABOVE
Q.26: The food cooks quickly in the pressure cooker, why?
[A] The pressure inside the pressure cooker increases the boiling point of water.
[B] The pressure inside the pressure cooker increases the boiling point of water
[C] Pressure-cooker is such that food cooks quickly.
[D] None of the above
Q.27: What is the migration velocity of the Earth’s floor?
[A] 9.8 m / s.2
[B] 6.4 x 106 m
[C] 11.2 km per second
[D] 12.4 km per second
Q.28: The reason why water droplets are rounded?
[A] float
[B] page tension
[C] capillarity
[D] uproar
Q.29: If any other girl sits next to a swinging girl, the periodic period –
[A] will increase
[B] will decrease
[C] will remain unchanged
[D] All these
Q.30: Period of Pendulum increases in summer – its period
[A] will increase
[B] will decrease
[C] will remain unchanged
[D] All these
Q.31: What is sound wave?
[A] longitudinal
[B] transverse
[C] electromagnetic
[D] none
Q.32: Women have a thin sound because-
[A] The sound of women is high
[B] The sound has low stellar
[C] Sound intensity is high
[D] Sound intensity is low
Q.33: To hear clear resonance the distance between listener and reflector should be?
[A] 25 m
[B] 17 m
[C] 12m
[D] 9 m
Q.34: Which electromagnetic wave has the highest carrying capacity?
[A] x rays
[B] ultraviolet rays
[C] gamma rays
[D] none
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Q.35: Which substance has the highest specific heat?
[A] ice
[B] sand
[C] water
[D] iron
Q.36: What is the minimum possible temperature?
[A] -3730C
[B] -2730C
[C] -1710C
[D] 00C
Q.37: By which method is the transmission of heat in solids mainly?
[A] radiation
[B] Convection
[C] conduction
[D] by these three methods
Q.38: There is more difficulty in burning with steam than boiling water, because secret heat of steam than water –
[A] decreases
[B] is more
[C] is the same
[D] does not happen
Q.39: By which method is the transmission of heat from Sun to Earth?
[A] conduction
[B] Convection
[C] radiation
[D] by all three methods
Q.40: Is there light?
[A] transverse wave
[B] longitudinal wave
[C] electromagnetic wave
[D] Both (A) and (C)
Q.41: Which medium has the highest speed of light?
[A] vacuum
[B] water
[C] glass
[D] specific substances
Q.42: What is the speed of light in vacuum?
[A] 180000 km / sec
[B] 360000 km / sec
[C] 300000 km / sec
[B] 1120 km / sec
Q.43: Which color light has the highest scattering?
[A] red
[B] sky
[C] yellow
[D] purple
Q.44: Which color light has the highest refractive index?
[A] purple
[B] red
[C] yellow
[D] sky
Q.45: Why does sky color look blue?
[A] Character deflection of light
[B] scattering of light
[C] Interpretation of Q
[D] refractive index of light