01.What is the voltage of electricity produced in power stations -
11KV
02.Element used by India for Pokran explosion: Plutonium
03.Solar energy is received by the earth through: Radiation
04.The force keeping the planets in a regular orbit is: Gravitational
05.If a conductor is touched by hand, the charge would leak to: Earth
06.Which ray has the highest penetrating power - Gamma rays
07.USA launched 'Chandra’in memory of: Dr.S.Chandrasekhar
08.In a refrigerator, cooling is produced by - The sudden expansion of a compressed gas
09.Who discovered the infra red rays in sunlight - William Herschel
10.Who discovered Analytical engine - Charles Babbage
11.India launched its first rocket in: 1963
12.Who discovered natural radio activity- Henri Bequeral
13......... is formulated by Max Plank: Quantum theory
14.Thermopile is used to: Detect the pressure of heat radiation
15.The first computer virus: Elk Cloner
16.The density of air is: 1.3 kg /cubic metre
17.Who is known as 'the father of personal computer’- Henri Edward Roberts
18.Which physical quantity has the unit Kilowatt-hour- Energy
19.In which direction does the rainbow appear in the morning - West
20.Which particle is also known as God’s particle - Higgs Bosons
21.Light Year is the unit of - Distance
22.What is the unit of luminous intensity- Candela
23.I Nanometer (1nm) =10⁻⁹ m
24.At which angle a projectile has maximum range- 45º
25.Escape velocity of the moon is- 2.4 km/s
26.Escape velocity of the earth is- 11.2 km /s
27.What is the temperature at which density of water is maximum- 4 º C
28.Example for the vector quantity- Displacement
29.One Calorie is about ____ Joules - 4.2 J
30.What is the mode of heat transfer in transferring heat from sun to earth - Radiation
31.What is the normal human body temperature - 98.4 º F
32.1 Horse Power = ______ Watt - 746 Watt
33.The device which converts mechanical energy to electrical energy is - Dynamo
34.Velocity of sound in air is _______ m/s – 340
35.Acoustics is the study of - Sound
36.National Science Day is observed on - February 28
37.Who discovered the Photo Electric Effect- Heinrich Hertz
38.Who proposed the wave theory of light - Christian Huygens
39.Who proposed Electro Magnetic Theory- James Clark Maxwell
40.Who explained Photo Electric Effect- Albert Einstein
41.Radiation having the highest wavelength - Radio Waves
42.The radiation having the highest frequency- Gamma rays
43. Particles which are supposed to travel faster than light are- Tachyons
44.Who discovered tachyons- ECG Sudarsan
45.Example for non primary color - Violet
46.Material used as Fuse wire is - alloy of Tin & Lead
47.The voltage range at which alternate current is supplied for household use in India is -220- 230 Volt
48.What is the frequency of household alternate current in India-50 hertz
49.Example of ferromagnetic substance is - Cobalt
50.What is the Curie temperature of iron -770 C
51.An example for a semi-conducting material is - Germanium
52.What is the color of Black box used in aeroplanes - Orange
53.In binary number system, a group of four bits is known as- nibble
54.Principle behind Hydrogen bomb is - Nuclear Fusion
55.Radio isotope used in carbon dating process is - Carbon-14
56.What is the half life of Carbon -14 - 5760 years
57.Who is the father of Nuclear Physics - Rutherford
58.Who is the father of Indian Space Research - Vikram Sarabhai
59.IC Chip used in computers is made using - Silicon
60.Einstein was awarded Nobel Prize for - explaining Photoelectric Effect
61.Filament of electric bulb is made by using - Tungsten
62.Which colored light is scattered most - Violet
63.Sound waves travel faster in - Steel
64.In which year CV Raman got Nobel Prize for Physics -1930
65.Light from the sun reaches earth in ______ seconds -500
66.What is the velocity of light in vacuum -3x 10^8 m/s
67.A type of stone that can float on water - Pumice stone
68.The expected energy of electrones at absolute zero is called - Fermi Energy
69.The freezer in a refrigerator is fitted near the top - so that it can cool the whole interior by setting up convection currents
70.Voyager I is related to which country- USA
71.It is difficult to work on ice because of - Absense of friction
72.Special Theory of Relativity was proposed in -1905
73.Kaleidoscope is based on the principle of - Multiple Reflection
74.The most common use of silicon hydrogels in making which among the following- Contact lenses
75.The energy that travels through telephone line- Electrical energy
76.The focal length of a concave lens - Negative
77.The process by means of which we can smell the fish being fried in a neighbor s home is called - Diffusion
78.Vulcanisation of rubber is done to make it -Durable
79.Which of the following is a physical change - Breaking of a glass bottle
80.A diode converts - AC into DC
81.A cotton wick dipped in pure honey when ignited with a match stick will- Burn consistantly
82.An example of a substance which is neither a good conductor of electricity nor an insulator is - Germanium
83.Which type of heat treatment helps steel to bend - Annealing
84.The Universal Product Code (UPC) is a standard symbology for what- Bar code
85.Newton’s first law gives the definition for - Inertia
86.The type of glass which can cut off ultra violet rays- Crookes glass
87.The energy absorbed during the change of a state of substance is called- Latent heat
88.The mirror used in search light is- Parabolic
89.What is measured by spring balance - Weight
90.Water is used in hot water bags because - It has high specific heat
91.Pressure cooker cooks rice faster because - High pressure raises the boiling point of water
92.Light from Alpha Century, which is one of the nearest star to the sun, reaches the earth on - 4.2 years
93.Mach number is used in connection with the speed of – Aircraft
94.Water drops cannot stick to the oily surface due to - Lack of adhesive force
95.Stars which appear single to the naked eye but are double when seen through a telescope are – Binaries
96.Which one of the following is the best fuel in terms of energy released per gram of fuel - Hydrogen
97.……………………measure the viscosity of liquids - Viscometer
98.Which is not related to Edison - Neon lamp
99.A body falling freely from a height towards the earth moves with uniform - Acceleration
100.It is easier to roll a barrel full of coal tar than to pull it because - The rolling friction is less than the sliding friction
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