01. Where is the cryogenic engine used?
a) Rocket Technology
b) submarines
c) superconductor
d) Deepfreezers
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A; Explanation Coming Soon...
02. In any uniform circular motion-
a) both velocity and acceleration remain constant
b) both speed and acceleration remain constant
c) both velocity and acceleration are variable
d) both speed and acceleration are variable
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A; Explanation Coming Soon...
03. Where should the handle of a door be placed to open it easily?
a) near hinges
b) in front of hinges farthest from the mid-point
c) in the middle
d) none of the above
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04. An iron ball is dropped in a bucket full of mercury or mercury, then-
a) it will settle at the bottom of the bucket
b) it will float on the surface of mercury
c) it will dissolve
d) none of the above
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B; Explanation Coming Soon...
05. In whose measurement is the pyrometer used?
a) atmospheric pressure
b) humidity
c) high temperature
d) Density
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C; Explanation Coming Soon...
06. When the length of the pendulum clock is quadrupled, then its time period is-
a) half
b) same
c) doubled
d) triple
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C; Explanation Coming Soon...
07. Due to which property, the tendency of a liquid drop to shrink and assume minimum volume is due to it?
a) surface tension
b) viscosity
c) Density
d) vapor pressure
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A; Explanation Coming Soon...
08. A copper disc has a circular hole at its centre. When the copper disc is heated, the diameter of the hole is-
a) will remain the same
b) will decrease
c) will increase
d) will depend on other factors
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B; Explanation Coming Soon...
09. What is the heat released by burning of one gram of fuel called?
a) heat of ignition
b) specific heat
c) heat capacity
d) calorific value
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D; Explanation Coming Soon...
10. Speed of light with increase in temperature of the medium-
a) increases
b) decreases
c) remains the same
d) often falls
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C; Explanation Coming Soon...
11. Increasing the temperature of sugar solution increases the solubility of sugar-
a) decreases
b) increases
c) remains unchanged
d) first decreases, then increases
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B; Explanation Coming Soon...
12. If we heat a solid, which part will have the maximum percentage increase?
a) lengthwise
b) in area
c) in volume
d) equal in all
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C; Explanation Coming Soon...
13. Which of the following is a scalar quantity?
a) impulse
b) acceleration
c) work
d) force
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C; Explanation Coming Soon...
14. Kilowatt unit is used in the measurement of It happens?
a) work
b) power
c) stream
d) none of these
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B; Explanation Coming Soon...
15. The pressure exerted by a man on the earth will be maximum if the man-
a) lying down
b) is sitting
c) stand on one leg
d) stand on both feet
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C; Explanation Coming Soon...
16. A particle is moving with uniform speed but its direction is continuously changing. The path of the particle will be-
a) Ellipse
b) parabolic
c) circular
d) linear
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C; Explanation Coming Soon...
17. When the water of the lake starts freezing, where will the ice start to form first?
a) from below
b) from the middle
c) from above
d) none of these
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C; Explanation Coming Soon...
18. What does an object that absorbs all the colors and reflects none look like?
a) white
b) gray
c) blue
d) black
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D; Explanation Coming Soon...
19. Which color of light shows maximum deviation on passing through a prism?
a) white
b) red
c) purple
d) green
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C; Explanation Coming Soon...
20. If both the mass and the velocity of the substance are doubled from their magnitude, then what will be the kinetic energy?
a) double
b) quadruple
c) eight times
d) sixteen times
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C; Explanation Coming Soon...
21. Which of the following is used as a magnifying glass?
a) plane mirror
b) concave mirror
c) converging lens
d) diverging lens
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C; Explanation Coming Soon...
22. Lambda is the unit used for the measurement of?
a) dimensions
b) wavelength
c) frequency
d) viscosity
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B; Explanation Coming Soon...
23. What type of lens does a simple microscope have?
a) biconvex lens
b) planoconvex
c) Planoconcave
d) biconcave
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A; Explanation Coming Soon...
24. The angle of incidence is the angle between
a) the incident ray and the surface of the mirror
b) the reflected ray and the surface of the mirror
c) the normal to the surface and the incident ray
d) the normal to the surface and the reflected ray
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C; Explanation Coming Soon...
25. Which is used in solar cooker?
a) concave lens
b) convex lens
c) concave mirror
d) convex mirror
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C; Explanation Coming Soon...
26. Which gas is filled in electric bulb?
a) Nitrogen
b) oxygen
c) carbon dioxide
d) Helium
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A; Explanation Coming Soon...
27. Which of the following has more drilling capacity?
a) alpha rays
b) beta rays
c) Gamma rays
d) neutron
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C; Explanation Coming Soon...
28. What is the cause of friction between two objects?
a) mutual attraction
b) mutual repulsion
c) some adhesive force between the two
d) irregularities on their pages
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D; Explanation Coming Soon...
29. Radioactive and nuclear wastes are dangerous because of their presence in the environment-
a) microorganisms die
b) micro-organisms are cultured
c) Only physical damages are done to the organisms
d) causes both physical and genetic damage
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D; Explanation Coming Soon...
30. What is the reason for the warming of the earth's atmosphere by the green house effect?
a) ultraviolet rays
b) Gamma rays
c) infrared rays
d) X rays
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C; Explanation Coming Soon...
31. The work done on a body by rotating it in a circle is-
a) positive
b) negative
c) zero
d) infinite
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C; Explanation Coming Soon...
32. The apparent weight of a person in a lift is less than the actual weight when the lift is going-
a) up with acceleration
b) down with acceleration
c) up with the same speed
d) down with the same speed
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B; Explanation Coming Soon...
33. What is escape velocity?
a) Velocity of falling object due to gravity
b) Maximum velocity for an object to leave the gravitational field of the earth
c) constant velocity of an object with no change in speed or direction
d) the minimum velocity for an object to leave the earth's gravitational field
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D; Explanation Coming Soon...
34. "Creation of something out of nothing" is against which rule?
a) Fixed Ratio
b) conservation of mass-energy
c) multiple ratio
d) conservation of momentum
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B; Explanation Coming Soon...