MCQ Questions on General Science
1- Which gases are filled in the starter of a fluorescent lamp or tube light?
(A) Sodium and Neon
(B) Argon and Helium
(C) Helium and Hydrogen
(D) Sodium and Argon
2- One Angstrom Unit (AU) is
(A) 10-6 m
(B) 10-9 m
(C) 10-10 m
(D) 10-12 m
3- What is the wavelength range of visible light?
(A) 2000-7000 AU
(B) 2000-5000 AU
(C) 4000-7000 AU
(D) 4000-5000 AU
4- What is the unit of solid angle?
(A) Sq mm
(B) Degree
(C) Steradians
(D) Radians
5- The light waves radiated per second from a light source are measured in
(A) Lumens
(B) Lux
(C) Lumens/s
(D) Lux/sq.m
6- Candela is the unit of
(A) Illuminance
(B) Luminous Flux
(C) Luminous Intensity
(D) Luminance
7- The measure of brightness for the source of light in comparison with the standard lamp is called
(A) Luminous Flux
(B) Luminous Intensity
(C) Illuminance
(D) Luminance
8- Long and hard shadows can be avoided by
(A) Using proper mounting heights of lamp
(B) Using indirect lighting
(C) Using wide surface sources of light
(D) All of above
9- Which of the following comes under the category of precious metal?
(A) Molybdenum
(B) Silver
(C) Tungsten
(D) Aluminium alloys
10- On a downhill road the energy of the bicyclist is being converted to energy.
(A) Potential, Kinetic
(B) Kinetic, Potential
(C) Heat, Mechanical
(D) Chemical, Potential
11- Pound-mass lbm is the mass unit in the system.
(A) SI
(B) Indian
(C) English
(D) None of these
12- Pound-force lbf is the unit.
(A) Force
(B) Momentum
(C) Energy
(D) None of these
13- In electric heaters, electrical energy is converted to sensible energy.
(A) Internal
(B) External
(C) Heat
(D) Kinetic
14- The sum of all forms of the energy a system possesses is called energy.
(A) Total
(B) Microscopic
(C) Macroscopic
(D) System
15- At the triple point, the three phases of a pure substance coexist in which of the following?
(A) Equilibrium
(B) Non-equilibrium
(C) Random
(D) Parallel
16- An oil of animal or vegetable origin.
(A) Fatty oils
(B) Linguistic oils
(C) Hybrid oils
(D) None of the above
17- These are the primary causes of friction if there is insufficient film of lubrication between sliding surfaces.
(A) Asperities
(B) Material properties
(C) Equipment
(D) Roundness
18- A measure of alkalinity of a lubricant, which is obtained by reacting it with acid of known strength until neutralization.
(A) Top number
(B) Bottom number
(C) Viscosity number
(D) Base number
19- At critical point the saturated liquid and the vapour states are identical.
(A) Unsaturated
(B) Saturated
(C) Critical
(D) None of these
20- As oil is progressively cooled the temperature at which wax starts to separate from the oil, producing a cloudy appearance.
(A) Flashpoint
(B) Gold point
(C) Extreme point
(D) Cloud point
ANSWERS:
1-(C), 2-(C), 3-(C), 4-(C), 5-(A), 6-(C), 7-(B), 8-(D), 9-(B), 10-(A), 11-(C), 12-(A), 13-(A), 14-(A), 15-(A), 16-(A), 17-(A), 18-(D), 19-(B), 20-(D)