Click here to Join Our SSC CHSL 2017 exam Preparation Group Click here to join Our Telegram Group CLICK HERE to join our All Exam Preparation Group facebook Page Q1. Which of the following physical quantities is a scalar quantity? ननम नलरख त ब नतक भ त र भ स क न स एक अददश य लश ह? 7-Jan -2017 1) Weight 2) Impulse 3) Young s Modulus 4) acceleration Correct Answer: Young s Modulus Q2. What is the unit of the physical quantity, Electrical conductance? ब नतक भ त र व द म त च रकत क इक ई क म ह? 23-Jan-2017 1) lux 2) ohm 3) farad 4) siemens Correct Answer: siemens lux is the SI unit of intensity of illumination, measuring luminous flux per unit area. The ohm is the SI derived unit of electrical resistance. The farad is the SI derived unit of electrical capacitance. Q3. Which among the following is false about displacement? ननम नलरख त भ स क न व स थ ऩन क फ य भ गरत ह? (8-Jan -2017) 1) It can be positive, negative or zero 2) Displacement is never greater than Distance 3) Its SI unit is meter 4) It is always positive Correct Answer: It is always positive Displacement is a vector. Displacement is the shortest distance between two points. 1 Tons of Free Study Materials & Ebooks by www.kvclasses.com
Q4.Which physical quantity is measured in siemens? क न स ब नतक भ त र स भ स भ भ ऩ ज त ह? (8-Jan -2017) 1) Electric potential 2) Electrical conductance 3) Magnetic flux 4) Refractive index Correct Answer: Electrical conductance Siemens is the derived unit of electric conductance, electric susceptance and electric admittance in the SI unit. One siemens is equal to the reciprocal of one ohm, and is also referred to as the mho Q5.Rate of change of momentum is स ग क ऩरय ततन क दय क म ह त ह? (8-Jan -2017) 1) Area 2) Pressure 3) Force 4) Velocity Correct Answer: Force Newton s Second Law Rate of change of momentum of an object is directly proportional to the resultant force applied. Q6.If a force acts upon two objects at rest, and having different masses for the same amount of time, then which one of the following will be the same for both the objects? मदद द अरग अरग भ त र र स स थय स त ओ ऩय एक ह कर धध क लरए एक फर क मत कयत ह, त उन द स त ओ क लरए ननम नलरख त भ क नस फ त स भ न ह ग? (10-Jan -2017) 1) Acceleration 2) Kinetic Energy 3) Velocity 4) Momentum Correct Answer: Momentum Momentum is product of mass and velocity :- P=mv and rate of change of momentum is equal to force So f= p/ t 2 Tons of Free Study Materials & Ebooks by www.kvclasses.com
p=f t Since f and t are same for both the bodies. Hence the momentum of both the bodies will be same. Q7. Instrument for measuring light intensity is called प रक श क त व रत क भ ऩन क म त र कहर त ह (23-Jan-2017) 1) Lucimeter 2) Cryometer 3) Cyanometer 4) Barometer Correct Answer: Lucimeter A cryometer is a thermometer which is used to measure very low temperatures of objects. A cyanometer is an instrument for measuring blueness i.e. colour intensity of blue sky. Barometer is an instrument measuring atmospheric pressure. Q8.Who discovered theory of relativity? ककसन स ऩ त क लसद त क ज क? (9-Jan -2017) 1) Isaac Newton 2) Albert Einstein 3) Niel Bohr 4) Michael Faraday Correct Answer: Albert Einstein Q9.Which device is used to measure the depth of ocean? भह स गय क गहय ई क भ ऩन क लरए क न स ड इस क उऩम ग ककम ज त ह? (9-Jan -2017) 1) Lexometer 2) Nanometer 3) Fathometer 4) Hydrometer Correct Answer: Fathometer A depth finder that uses sound waves to determine the depth of water 3 Tons of Free Study Materials & Ebooks by www.kvclasses.com
Q10.Device used for the detection and measurement of all types of radiation (alpha, beta and gamma). व ककयण क सब प रक य (अल प, फ ट औय ग भ ) क ऩहच न औय भ ऩ क लरए उऩम ग क ज न र उऩकयण ह? (9-Jan -2017) 1) Geiger counter 2) Polarimeter 3) Calorimeter 4) Radiometer Correct Answer: Geiger counter Geiger counter is an instrument used for measuring ionizing radiation. A polarimeter is used to measure the angle of rotation caused by passing polarized light through an optically active substance Calorimeter ->an apparatus for measuring the amount of heat involved in a chemical reaction or other process Radiometer ->an instrument for detecting or measuring the inte Q31.The SI unit of intensity of sound is. ध नन क त व रत क SI इक ई ह (17-Jan-2017) 1) watt per square meter 2) joule per square meter 3) newton per square meter 4) tesla per square meter Correct Answer: watt per square meter Sound intensity is defined as the power carried by sound waves per unit area. The SI unit of intensity, which includes sound intensity, is the watt per square meter (W/m2). Q32.Why does a fountain pen leak in aeroplane flying at a height? एक ह ई जह ज भ एक पव य ऩ न र क ऊ च ई ऩय उड न क म कयत ह? (17-Jan-2017) 1) Because of reduced viscosity of the ink in the pen 2) Because of increased viscosity of the ink in the pen 3) Because of higher atmospheric pressure outside the pen 4) Because of lower atmospheric pressure outside the pen Correct Answer: Because of lower atmospheric pressure outside the pen The atmospheric pressure decreases with altitude hence, air pressure is low at 4 Tons of Free Study Materials & Ebooks by www.kvclasses.com
higher altitudes. Due to this difference in air pressure, the air inside the pen forces the ink to come out. Q33.What are the two kinds of Rotatory motion? घ णतन गनत क द प रक य क न स ह? (17-Jan-2017) 1) Spin and Vibrational motion 2) Spin and Orbital motion 3) Spin and Translatory motion 4) Spin and Projectile motion Correct Answer: Spin and Orbital motion स स ऩन औय क म गनत Q34. is the perpendicular distance between point of application of force and axis of rotation. फर क अन प रम ग क बफ द औय य ट शन क ध य क फ च स ध द य क कहत ह (17-Jan-2017) 1) Moment arm 2) Moment of Inertia 3) Altitude 4) Base Correct Answer: Moment arm, आघ णत ब ज A moment arm is simply the length between a joint axis and the line of force acting on that joint. Every joint that is involved in an exercise has a moment arm. Q35.The value of acceleration due to gravity (g) at a distance of 2R from the surface of earth, where R is the radius of earth is. ऩ थ क सतह स 2R क द य ऩय ग र त कर तण (g) क क यण त यण क भ न ह त ह, जह R ऩ थ क बत रज म ह (18-Jan-2017) 1) g/3 2) g/4 3) g/9 4) g/2 Correct Answer: g/9 Value of acceleration due to gravity at height comparable with radius of earth is 5 Tons of Free Study Materials & Ebooks by www.kvclasses.com
given by gh = g(r/(r+h))2 In problem h = 2R gh = g(r/(r+2r))2 = g/9 i.e. ( 1/9)th of acceleration due to gravity on surface of earth. Q36. The unit of which physical quantity is not pascal? ककस ब नतक भ त र क इक ई ऩ स कर नह ह? (18-Jan-2017) 1) Moment of inertia 2) Pressure 3) Stress 4) Young s modulus Correct Answer: Moment of inertia Q37. Weight of a person at a height of 2R from the centre of the earth, where R is the radius of the earth. ऩ थ क क द र स 2R क ऊ च ई ऩय स स थत ककस व मस क त क ज न, जह R ऩ थ क बत रज म ह (18-Jan-2017) 1) remains same 2) becomes half 3) becomes twice 4) becomes one fourth Correct Answer: becomes one fourth Q38. How can we measure specific gravity of milk? हभ द ध क व लशष ट ग र त क क स भ ऩ ग? (18Jan2017) 1) Using a viscometer 2) Using an odometer 3) Using a hygrometer 4) Using a hydrometer Correct Answer: Using a hydrometer Viscometer -> It is an instrument used to measure the viscosity of a fluid. Odometer -> An instrument for measuring the distance travelled by a wheeled vehicle. Hygrometer -> It is an instrument used for measuring the water vapor in the atmosphere 6 Tons of Free Study Materials & Ebooks by www.kvclasses.com
Q39.Who established the foundations of the Quantum theory? ककसन क टभ थ म य क न क स थ ऩन ककसन क थ? (18-Jan-2017) 1) Max Planck 2) Mark Nicholas 3) Albert Einstein 4) Alfred Hitchcock Correct Answer: Max Planck Planck s law describes the spectral density of electromagnetic radiation emitted by a black body in thermal equilibrium at a given temperature T. Q40.As per Newton s law of gravitation, the force between two bodies is न म टन क ग र त कर तण क ननमभ क अन स य, द स त ओ क फ च क फर ह त ह (22-Jan-2017) 1) directly proportional to the product of their masses 2) directly proportional to the distance between them 3) directly proportional to the product of their radius 4) directly proportional to the product of forces Correct Answer: directly proportional to the product of their masses Q41.Sound can not travel in which of the following medium? ध नन ननम नलरख त भ स ककस भ ध मभ भ म त र नह कय सकत ह? (22-Jan- 2017) 1) Solid 2) Liquid 3) Gas 4) Vacuum Correct Answer: Vacuum Q42. is same on every point on a rotating body. एक घ णतन स त ऩय हय बफ द ऩय एक स भ न ह त ह (22-Jan-2017) 1) Linear velocity 2) Linear momentum 3) Angular torque 4) Angular velocity 7 Tons of Free Study Materials & Ebooks by www.kvclasses.com
Correct Answer: Angular velocity क ण म गनत Q43. The path of a projectile is called its. प र प म क ऩथ क उसक कह ज त ह (22-Jan-2017) 1) Altitude 2) Range 3) Trajectory 4) Flight Correct Answer: Trajectory प र ऩ ऩथ Q44. states that the total current entering a junction is equal to the total current leaving the junction. फत त ह कक एक ज क शन भ प र श कयन र क र ध य उस ज क शन क छ डन र क र ध य क फय फय ह त ह (22-Jan-2017) 1) Lenz s Law 2) Hooke s Law 3) Ohm s Law 4) Kirchhoff s First Law Correct Answer: Kirchhoff s First Law Q45. Acceleration due to gravity on a planet decreases with. ककस ग रह ऩय ग र त कर तण क क यण क स थ त यण कभ ह ज त ह (22-Jan-2017) 1) decrease in radius of the planet 2) increase in mass of the planet 3) decrease in mass of the body 4) increase in altitude from surface of the planet Correct Answer: increase in altitude from surface of the planet Q46.The residual attractive or repulsive forces between molecules or atomic groups that do not arise from a covalent bond, or ionic bonds is called. अण ओ म ऩयभ ण सभ ह क फ च अ लशष ट आकर तक म प रनतक यक फर ज कक 8 Tons of Free Study Materials & Ebooks by www.kvclasses.com
सहस म जक फ धन, म आमननक फ धन स उत ऩन न नह ह त, उन ह कह ज त ह, (23-Jan-2017) 1) Neutral Bond 2) Non Polar Bond 3) Electro Valence bond 4) Van der Walls bond Correct Answer: Van der Walls bond Q47. Instrument for measuring time is called. सभम क भ ऩन क म त र क कह ज त ह (23-Jan-2017) 1) Diagometer 2) Anemometer 3) Durometer 4) Chronometer Correct Answer: Chronometer Q48. If the radius of the earth decreases and its mass remains the same, then the value of acceleration due to gravity will. मदद ऩ थ क बत रज म घट ज त ह औय उसक द रव मभ न सभ न यहत ह, त ग र त कर तण क क यण त यण क भ न ह ग (23-Jan-2017) 1) decrease 2) increase 3) remain the same 4) become zero Correct Answer: increase Q49. In a projectile motion, a large angle with the horizontal produces एक प र प म गनत भ नतज क स थ एक फड क ण ऩ द कयत ह (23- Jan-2017.) 1) flat trajectory 2) curve trajectory 3) straight trajectory 4) high trajectory Correct Answer: high trajectory 9 Tons of Free Study Materials & Ebooks by www.kvclasses.com
Q50. For what is Mohs scale used? भ हस ऩ भ न क प रम ग ककस लरए ककम ज त ह? (23-Jan-2017) 1) To measure brightness of a substance 2) To measure viscosity of a liquid 3) To measure elasticity of a material 4) To measure hardness of minerals Correct Answer: To measure hardness of minerals Q51. of a wave is the rate of transfer of energy per unit area perpendicular to the direction of travel of the wave. ककस रहय क उस रहय क म त र क ददश क रम फ त प रनत इक ई त र भ उज त क हस त तयण क दय क कहत ह (24-Jan-2017) 1) Interference 2) Rectification 3) Intensity 4) Diffraction Correct Answer: Intensity Q52. Motion of a train is an example of. ट र न क गनत क एक उद हयण ह (24-Jan-2017) 1) Rotatory motion 2) Spin motion 3) Projectile motion 4) Translatory motion Correct Answer: Translatory motion Q53. mirror is used in the headlights of cars. दऩतण क य क ह र इट स भ उऩम ग ककम ज त ह (25-Jan-2017) 1) Semi-circular 2) Conical 3) Convex 4) Concave Correct Answer: Concave अ तर Q54. Cryogenics is a branch of Physics that deal with. 10 Tons of Free Study Materials & Ebooks by www.kvclasses.com
क र म ज ननक स ब नतक क एक श ह ज स स फ धधत ह (25-Jan- 2017) 1) very high temperatures 2) very low temperatures 3) growth of extremely small crystals 4) growth of extremely large crystals Correct Answer: very low temperatures Q55. states that the induced e.m.f. is directly proportional to the rate of change of magnetic flux linkage or rate of cutting of magnetic flux linkage. कहत ह कक प र रयत ई.एभ.एप च फक म प र ह लर क ज क म च फक म प र ह लर क ज क क टन क दय क ऩरय ततन क दय क सभ न ऩ नतक ह त ह (27-Jan-2017) 1) Lenz s Law 2) Hooke s Law 3) Ohm s Law 4) Faraday s Law Correct Answer: Faraday s Law Q56. If the vector sum of torques acting on a system is zero, then the object is in अगय ककस प रण र ऩय क मत कयन र ट कत क सददश म ग श न म ह, त ह स त भ ह (27-Jan-2017) 1) static equilibrium 2) translatory equilibrium 3) linear equilibrium 4) rotational equilibrium Correct Answer: rotational equilibrium घ ण म स त रन Q57. is defined as the force acting per unit current per unit length on a wire placed at right angles to the magnetic field च फक म त र भ सभक ण ऩय य ककस त य ऩय प रनत इक ई प र ह प रनत रम फ ई क मत कयन र फर क र ऩ भ ऩरयब वर त ककम ज त ह. (27-11 Tons of Free Study Materials & Ebooks by www.kvclasses.com
Jan-2017) 1) Magnetic susceptibility 2) Magnetic flux density 3) Magnetic flux 4) Magnetic pulse Correct Answer: Magnetic flux density च फक म प र ह क घनत Magnetic flux density is defined as the amount of magnetic flux in an area taken perpendicular to the magnetic flux s direction. Q58. If an object moves in a purely rotatory motion, then each constituent particle of the body moves in a circle, the centre of which is located on a line is called. मदद क ई स त व श द र ऩ स घ भन र गनत भ चरत ह, त उसक प रत म क घटक कण एक त त भ चरत ह, स जसक क द र एक य ऩय स स थत ह त ह, स जस कहत ह (27-Jan-2017) 1) the axis of rotation 2) the line of rotation 3) the spinning rod 4) the fixed line Correct Answer: the axis of rotation घ णतन कक ध य Q59. The work done by centripetal force is. क द र म फर द य क मत ककम ज त ह (30-Jan-2017) 1) positive 2) zero 3) negative 4) unity Correct Answer: zero Work done by centripetal force along tangential direction will be zero as displacement and force vector are normal to each other. F*s=0 Q60. What is the SI unit of Torque? ट कत क एस.आई म ननट क म ह? (29-Jan-2017) 12 Tons of Free Study Materials & Ebooks by www.kvclasses.com
1) newton/meter 2) newton meter 3) newton second 4) newton/meter squared Correct Answer: newton meter Q61. What is the unit of the physical quantity, Illuminance? ब नतक भ त र ज म नत क इक ई क म ह? (29-Jan-2017) 1) Siemens 2) Tesla 3) lux 4) Weber Correct Answer: lux Q62. If a body moves with a uniform speed in a circular motion, then. मदद क ई स त त त म गनत भ एक सभ न ग क स थ चरत ह, त (29-Jan- 2017) 1) its acceleration is increasing 2) its acceleration is zero 3) its velocity is changing 4) its velocity is uniform Correct Answer: its velocity is changing In circular motion with uniform speed, the body is accelerating as the direction of speed is continously changing hence the velocity is changing. Moreover, the acceleration is constant and directed towards the center of the circular trajectory. Q63. An example of longitudinal waves (in gas as a medium) is. अन द ध मत तय ग (ग स क एक भ ध मभ भ ) क एक उद हयण ह (29- Jan-2017) 1) heat waves 2) radio waves 3) electromagnetic waves 4) sound waves Correct Answer: sound waves In a longitudinal wave, the particles of the medium move parallel to the wave s 13 Tons of Free Study Materials & Ebooks by www.kvclasses.com
direction of travel In a transverse wave, the particles of the medium move perpendicular t Q64. of a material is defined as the minimum amount of the work necessary to remove a free electron from the surface of the material. ककस ऩद थत क क उस ऩद थत कक सतह स एक भ क त इर क ट र न क द य कयन क लरए रगन र आ श मक क भ कक न म नतभ य लश क र ऩ भ ऩरयब लसत ककम ज त ह (3-Feb-2017) 1) The electro-repulsive force 2) The coulomb factor 3) The power factor 4) The work function Correct Answer: The work function Q65. A cannon ball is fired. The motion of this ball is an example of एक त ऩ क ग र द ग गम ह इस ग र क गनत क एक उद हयण ह (3-Feb-2017.) 1) Straight line motion 2) projectile motion 3) Hyperbolic motion 4) horizontal motion Correct Answer: projectile motion Q66. What is the unit of the physical quantity, Magnetic flux? ब नतक भ त र च फक म प र ह क इक ई क म ह? (3-Feb-2017) 1) farad 2) weber 3) tesla 4) henry Correct Answer: weber Q67. What does the slope of a velocity time graph represent? एक ग सभम ग र प क ढर न क म दश त ह? (3-Feb-2017) 1) Acceleration 2) Distance 14 Tons of Free Study Materials & Ebooks by www.kvclasses.com
3) Speed 4) Momentum Correct Answer: Acceleration Q68. What is the unit of the physical quantity Jerk? ब नतक भ त र जकत क इक ई क म ह? (3-Feb-2017) 1) meter second 2) meter per second cube 3) meter per second square 4) meter per second Correct Answer: meter per second cube SI units are m/s3 jerk, also known as jolt, surge, or lurch, is the rate of change of acceleration; that is, the derivative of acceleration with respect to time, and as such the second derivative of velocity, or the third derivative of position. Jerk is a vector Q69. What is the unit of the physical quantity Magnetic field strength? ब नतक भ त र च फक म त र कक त कत क इक ई क म ह? (7-Feb-2017) 1) joule per meter 2) newton per meter 3) kelvin per meter 4) ampere per meter Correct Answer: ampere per meter Q70. A transformer can do all of the following except ट र सप भतय इनभ स एक क छ डकय ननम न सब कय सकत ह (7-Feb-2017) 1) stepup a/c voltage 2) stepup a/c current 3) stepup a/c power 4) stepdown a/c voltage Correct Answer: step up a/c power Q71. Instrument for measuring work performed is called ककम गए क भ क भ ऩन क म त र क कह ज त ह (7-Feb-2017) 1) Eudiometer 2) Anemometer 15 Tons of Free Study Materials & Ebooks by www.kvclasses.com
3) Hyetometer 4) Ergometer Correct Answer: Ergometer Q72. What is the unit of the physical quantity Stress? ब नतक भ त र तन क इक ई क म ह? (7-Feb-2017) 1) newton second 2) steradian 3) pascal 4) joule Correct Answer: pascal Q73. Upward force on a floating body is called ककस त यत ह ई स त ऩय रगन र उध त फर क कहत ह (8-Feb- 2017.) 1) jerk 2) buoyancy 3) Archimedal force 4) Anti-gravity Correct Answer: buoyancy Q74. An object at rest will remain at rest and an object in motion will remain in motion until and unless it is acted upon by an external force. This is Newton s? एक स त जफ तक स स थय ह तफ तक ह स स थय दह यह ग, औय मदद गनत भ ह, त ह गनत भ ह यह ग, जफ तक उस ऩय क ई फ ह म फर नह रग म ज म ग मह न म टन क क न स ननमभ ह? (7-Jan -2017) 1) First law 2) Second law 3) Third law 4) Fourth law Correct Answer: First law Q75. For every action, there is an equal and opposite reaction, is Newton s प रत म क कक रम कक उसक त ल म औय एक व ऩय त प रनतकक रम ह त ह, मह न म टन 16 Tons of Free Study Materials & Ebooks by www.kvclasses.com
क क न स ननमभ ह? (8-Jan -2017) 1) First law 2) Second law 3) Third law 4) Fourth law Correct Answer: Third law Q76. Name the first Indian who got Nobel Prize in physics. ह क न ऩहर ब यत म ह, स जन ह ब नतक व न भ न फ र ऩ यस क य लभर ह (8-Jan -2017) 1) CK Naidu 2) Rangnath Mishra 3) Amartya Sen 4) CV Raman Correct Answer: CV Raman Q77. Women have shrill voice because of भदहर ओ क त आ ज क क यन ह त ह (8-Feb-2017) 1) Low frequency 2) High frequency 3) Shrill vocals 4) Strong epiglottis Correct Answer: High frequency Q78. Who invented the Lightning Rod in 1749? (19-Jan-2017) 1) Benjamin Franklin 2) Nikola Tesla 3) Eli Whitney 4) George Washington Correct Answer: Benjamin Franklin Q79. Atmospheric pressure is measured by. म भ र म दफ ककसस भ ऩ ज त ह (19-Jan-2017) 1) Barometer 2) Hexameter 17 Tons of Free Study Materials & Ebooks by www.kvclasses.com
3) Nanometer 4) Glaxometer Correct Answer: Barometer Q80. With reference to gravity, what is G called? ग र त कर तण क स दबत भ,G क क म कह ज त ह? (23-Jan-2017) 1) Gravitational constant 2) Gravitational attraction 3) Gravitational force 4) Acceleration due to gravity Correct Answer: Gravitational constant Q81. Who Invented water turbine? (24-Jan-2017) 1) Enrico Fermi 2) Adolf Gaston Eugen Fick 3) Sandford Fleming 4) Benoit Fourneyron Correct Answer: Benoit Fourneyron Q82. Who Invented Electric Stove? (25-Jan-2017) 1) Lloyd Groff Copeman 2) Bartolomeo Cristofori 3) Leonardo da Vinci 4) Philip Diehl Correct Answer: Lloyd Groff Copeman Q83.Who Invented Laser? (29-Jan-2017) 1) William FrieseGreene 2) Arthur Fry 3) Gordon Gould 4) Otto von Guericke Correct Answer: Gordon Gould Q84.Who won Nobel prize for Physics in 2015? ककसन 2015 भ ब नतक क लरए न फ र ऩ यस क य ज त? (1-Feb-2017) 1) Hiroshi Amano 18 Tons of Free Study Materials & Ebooks by www.kvclasses.com
2) Takaaki Kajita 3) Isamu Akasaki 4) Makoto Kobayashi Correct Answer: Takaaki Kajita Q85. C. V. Raman won Nobel Prize for which category? स यभन क ककस श र ण क लरए न फर ऩ यस क य लभर? (1-Feb-2017) 1) Literature 2) Physics 3) Peace 4) Economic Studies Correct Answer: Physics Q86. Human beings hearing range is. भन ष म ज नत क स नन क स भ ह (3-Feb-2017) 1) 50 to 50,000 Hz 2) 40 to 40,000 Hz 3) 30 to 30,000 Hz 4) 20 to 20,000 Hz Correct Answer: 20 to 20,000 Hz Q87. Kaleidoscope was invented by. (8-Feb-2017) 1) John Barber 2) Tim BernersLee 3) Alan Blumlein 4) David Brewster Correct Answer: David Brewster Q88. Barometer was invented by (7-Jan -2017) 1) Evangelista Torricelli 2) Charles XavierThomas 3) Edward Teller 4) Gustav Tauschek Correct Answer: Evangelista Torricelli Q89. Seismometer was invented by (8-Jan -2017) 19 Tons of Free Study Materials & Ebooks by www.kvclasses.com
1) Alexander Parkes 2) Luigi Palmieri 3) Alexey Pajitnov 4) Ransom Eli Olds Correct Answer: Luigi Palmieri Q90. Electric tram was invented by? (9-Jan -2017) 1) Fyodor Pirotsky 2) Arthur Pitney 3) Fritz Pfleumer 4) Stephen Perry Correct Answer: Fyodor Pirotsky Q91. Electric chair was invented by (9-Jan -2017) 1) Alfred P. Southwick 2) Isaac Singer 3) Murasaki Shikibu 4) Hanaoka Seish? Correct Answer: Alfred P. Southwick Q92. The study of universe is known as. ब रह भ क अध ममन क क न भ स ज न ज त ह (9-Jan -2017) 1) Cosmology 2) Astrology 3) Seismology 4) Limnology Correct Answer: Cosmology Q93. Electroscope was invented by (11-Jan-2017) 1) Jean-Antoine Nollet 2) Alfred Nobel 3) Joseph Nicephore Niépce 4) Ted Nelson Correct Answer: Jean-Antoine Nollet Q94. Who invented Television? (11-Jan-2017) 1) J L Baird 20 Tons of Free Study Materials & Ebooks by www.kvclasses.com
2) Aristotle 3) James Clerk Maxwell 4) Nikola Tesla Correct Answer: J L Baird Q95. Who invented Vacuum Flask? (12-Jan-2017) 1) Charles Babbage 2) Alexander Fleming 3) Gregory Pincus 4) James Dewar Correct Answer: James Dewar Q96. Instrument for measuring wind velocity is called (17-Jan-2017) 1) Coulombmeter 2) Anemometer 3) Cyanometer 4) Chronometer Correct Answer: Anemometer Q97.Formula for distance is (10-Jan -2017) 1) speed x time 2) time / speed 3) speed x acceleration 4) velocity / speed Correct Answer: speed x time Q98.One nanometer is equal to meters. एक न न भ टय भ टय क फय फय ह 1)10 raised to the power (3) 2)10 raised to the power (6) 3)10 raised to the power (9) 4)10 raised to the power (12) Correct Answer: 10 raised to the pow (15-Jan-2017) 21 Tons of Free Study Materials & Ebooks by www.kvclasses.com