Question 1 :
Click and choose the correct answer.<br>In solids, the intermolecular force of attraction is
Question 2 :
Click and choose the correct answer.<br>The moment of force depends upon
Question 3 :
Click and choose the correct answer.<br>The geometrical centre of a spherical mirror is called the
Question 4 :
Click and choose the correct option.<br>Which of the following is the best conductor of electricity?
Question 5 :
Click and choose the correct option.<br>If the displacement of a body is zero, then the work done by the force acting on the body is
Question 6 :
Click and choose the correct option.<br>The temperature at which a liquid boils and changes rapidly into a gas is called ____________.
Question 7 :
Click and choose the correct answer.<br>The process of conversion of a solid into its liquid state, at a particular temperature, on heating is called
Question 10 :
Click and choose the correct answer.<br>The top thick pin of a plug is always connected to the
Question 11 :
Click and choose the correct answer.<br>The colour code for a live wire is
Question 13 :
Click and choose the correct answer.<br>Which of the following have no definite volume?
Question 14 :
Click and choose the correct option.<br>A manometer is used to measure atmospheric pressure.
Question 15 :
Click and choose the correct answer.<br>Pitch of a sound depends on the _____________ of vibration.
Question 16 :
Click and choose the correct answer.<br>If the magnitude of a force applied increases, the work done
Question 17 :
Click and choose the correct answer.<br>Factors on which the loudness of a sound depends are
Question 18 :
Click and choose the correct answer.<br>In which of the following situations, no work is said to be done?
Question 19 :
Click and choose the correct option.<br>The SI unit of moment of force is N m (newton metre).
Question 20 :
Click and choose the correct answer.<br>When you climb up the stairs, your potential energy increases.
Question 21 :
Click and choose the correct option.<br>The effect of a force depends upon the area over which it acts.
Question 22 :
Click and choose the correct answer.<br>A ___________ is a device used to measure the pressure exerted by a liquid.
Question 23 :
Click and choose the correct answer.<br>Which of the following cannot be compressed?
Question 24 :
Click and choose the correct answer.<br>The process that occurs when water changes into water vapours at 30 ℃ is called
Question 25 :
Click and choose the correct answer.<br>The flotation and sinking ability of a solid is not dependent upon its density.
Question 26 :
Click and choose the correct option.<br>The moment of a force does not depend upon the magnitude of the force applied.
Question 27 :
Click and choose the correct answer.<br>Pitch of a sound depends on the ____________.
Question 28 :
Click and choose the correct option.<br>In convection current, hot air moves
Question 29 :
Click and choose the correct answer.<br>If the force applied on a body decreases, then the work done on it will
Question 30 :
Click and choose the correct option.<br>A ____________ is an instrument used to measure the relative density of liquids.
Question 31 :
Click and choose the correct answer.<br>The pressure exerted by a liquid is directly propotional to its __________.
Question 32 :
Click and choose the correct answer.<br>A hydrometer is usually made of metal.
Question 33 :
Click and choose the correct answer.<br>The consequence of improper handling of electricity is
Question 34 :
Click and choose the correct option.<br>Force is an act of push or pull which changes or tends to change the state of rest or of uniform motion of a body.
Question 35 :
Click and choose the correct answer.<br>Work is said to be done if a force is applied on a body.
Question 36 :
Click and choose the correct option.<br>The energy possessed by a flowerpot placed at the rooftop of a building is
Question 37 :
Click and choose the correct answer.<br>The SI unit of pressure is
Question 38 :
Click and choose the correct answer.<br>A/An _________ is defined as the smallest unit of matter.
Question 39 :
Click and choose the correct option.<br>The kinetic energy of a moving body depends on its mass and
Question 40 :
Click and choose the correct option.<br>What is the smallest unit of an element called?
Question 41 :
Click and choose the correct answer.<br>The density of ice is more than that of water.
Question 42 :
Click and choose the correct answer.<br>The relative density of a liquid can be determined by using a special bottle called the relative density bottle.
Question 43 :
Click and choose the correct answer.<br>A battery is a collection of cells in
Question 44 :
Click and choose the correct answer.<br>Which of the following is a non-conductor of electricity?
Question 45 :
Click and choose the correct answer.<br>Which of the following relations is true for spherical mirrors?
Question 46 :
Click and choose the correct answer.<br>A/An __________ is defined as the smallest unit of an element.
Question 47 :
Click and choose the correct option.<br>The hydrometer used to test the purity of milk is called a _____________.
Question 48 :
Click and choose the correct answer.<br>A __________ is used to measure the atmospheric pressure.
Question 49 :
Click and choose the correct option.<br>The process of conversion of a solid into its liquid state, at a particular temperature, on heating is called _________ or fusion.
Question 51 :
Click and choose the correct answer.<br>If an electroscope is charged by induction, it acquires
Question 52 :
Click and choose the correct answer.<br>A sound produced by guitar and violin with the same pitch and loudness is distinguished by
Question 53 :
Click and choose the correct option.<br>A child riding a bicycle is said to possess
Question 54 :
Click and choose the correct answer.<br>The liquid that expands the minimum on heating is
Question 55 :
Click and choose the correct option.<br>At higher temperature solid molecules vibrate faster and take up
Question 56 :
Click and choose the correct option.<br>The point on the principal axis of a spherical mirror, where all the parallel rays of light incident on mirror, parallel to the principal axis, meet or appear to meet after reflection is
Question 57 :
Click and choose the correct option.<br>Charges can be exchanged between two bodies by
Question 58 :
Click and choose the correct option.<br>The mode of transfer of heat in which the particles actually move is called
Question 59 :
Click and choose the correct answer.<br>The length of an iron rod increases from 10 m to 11 m, when kept over a burner flame. This increase in length is due to
Question 60 :
Click and choose the correct answer.<br>An electric fuse is always connected to the
Question 61 :
Click and choose the correct option.<br>The ray of light emerging out of a parallel sided glass slab is always parallel to the incident ray.
Question 62 :
Click and choose the correct answer.<br>When a ray of light travels from a rarer medium to a denser medium, it
Question 63 :
Click and choose the correct option.<br>The phenomenon of light that causes the formation rainbow is
Question 64 :
Click and choose the correct option.<br>In how many ways an electroscope can be charged?
Question 65 :
Click and choose the correct answer.<br>The constant upward and downward circulation of fluid forms currents in the medium called convection currents.
Question 66 :
Click and choose the correct option.<br>A sharp edge has a larger surface area.
Question 67 :
Click and choose the correct answer.<br>The law governing the transmission of pressure through liquids was stated by the French physicist, ____________.
Question 68 :
Click and choose the correct answer.<br>A rainbow is formed because water droplets of the atmosphere behave like glass slabs.
Question 70 :
Click and choose the correct answer.<br>In a <i>tabla</i>, sound is produced by the vibration of _____________.
Question 71 :
Click and choose the correct answer.<br>The mode of transfer of heat energy through a fluid by the actual movemnet of the molecules is called ___________.
Question 72 :
Click and choose the correct option.<br>If a force has a tendency to turn or rotate a body in clockwise direction, the moment of force is called anticlockwise moment.
Question 73 :
Click and choose the correct answer.<br>The boiling of a pure liquid occurs at a fixed temperature called
Question 74 :
Click and choose the correct answer.<br>Loudness of a sound depends on its _______________ of vibration.
Question 75 :
Click and choose the correct answer.<br>The characteristic of sound which distinguishes a feeble sound from a loud one of the same frequency is called the
Question 76 :
Click and choose the correct option.<br>Roller coaster ride is an example of transformation of energy between potential and
Question 77 :
Click and choose the correct option.<br>The volume of irregular solids can be found by either using a ________ or a Eureka can.
Question 78 :
Click and choose the correct option.<br>The process by which a liquid change into its gaseous state at some fixed temperature by absorption of heat energy is called
Question 79 :
Click and choose the correct answer.<br>Transferring a charge by touching is called charging by
Question 80 :
Click and choose the correct answer.<br>If the object is in front of a convex mirror, then the image is always
Question 81 :
Click and choose the correct option.<br>Which of the following natural phenomena takes place due to convection currents?
Question 82 :
Click and choose the correct answer.<br>The pitch of a guitar depends on ___________.
Question 83 :
Click and choose the correct answer.<br>There are four iron rods R1, R2, R3 and R4 of the same dimensions. The temperature of R1 is raised to 500°C, that of R2 to 250°C, that of R3 to 1000°C and that of R4 to 800°C. Which rod will have the maximum linear expansion?
Question 84 :
Click and choose the correct option.<br>When object is placed at infinity, the nature of the image formed by the concave mirror is
Question 85 :
Click and choose the correct option.<br>The definite path in which the electrons revolve around the nucleus is called
Question 86 :
Click and choose the correct answer.<br>_____________ has maximum value at the sea level and decreases with increase in altitude.
Question 87 :
Click and choose the correct option.<br>__________ is a mixture of gases and therefore, convection currents can be set up in air .
Question 88 :
Click and choose the correct answer.<br>Drum produces sound due to vibration of its
Question 89 :
Click and choose the correct answer.<br>When the temperature of a liquid increases, the average kinetic energy of its molecules
Question 90 :
Click and choose the correct option.<br>The force of attraction between the molecules of the same kind is called the force of ___________.
Question 91 :
Click and choose the correct option.<br>Which of the following is a safety wire that connects the metal case of the appliances to the earth?
Question 92 :
Click and choose the correct answer.<br>Pressure increases if the area of contact
Question 93 :
Click and choose the correct answer.<br>A flute produces sound due to the vibration of
Question 94 :
Click and choose the correct option.<br>When the temperature of the liquid increases, what happens to the average kinetic energy of the molecules?
Question 95 :
Click and choose the correct answer.<br>The number of constituent colours of white light is
Question 96 :
Click and choose the correct answer.<br>When an object is placed at the principal focus of a concave mirror, the image will be formed at the
Question 97 :
Click and choose the correct answer.<br>A process by which a substance directly changes from the solid state to its vapour (gaseous) state is called
Question 98 :
Click and choose the correct option.<br>Which of the following helps us to record the electrical energy we consume in our homes?
Question 100 :
Click and choose the correct answer.<br>The sound that never changes in pitch, volume, speed or timbre is known as ____________.
Question 101 :
Smaller the area on which a force acts, _________ is the effect of the force.
Question 103 :
A man exerts same pressure on the ground whether he is standing or he is lying.
Question 110 :
Less force is needed when applied at a farther distance from the pivoted point.
Question 111 :
For a given thrust,pressure is more on a surface of large area.
Question 113 :
The pressure on a surface increases with an increase in the thrust on the surface.
Question 114 :
To obtain a given moment of force for turning a body, the force needed can be decreased by
Question 116 :
It is easier to hammer a blunt nail into a piece of wood than a sharply pointed nail.
Question 120 :
In a door, a handle is provided farthest from the hinges.
Question 121 :
Find the area of a body which experiences a pressure of 50000 Pa by a thrust of 100 N?
Question 124 : <table> <tr><th>Column I </th> <th>Column II </th> </tr> <tr><td>(a) Camel</td> <td>(i) broad and deep foundation</td> </tr> <tr><td>(b) Truck</td> <td>(ii) broad feet</td> </tr> <tr><td>(c) Knife</td> <td>(iii) six or eight tyres</td> </tr> <tr><td>(d) High building</td> <td>(iv) sharp cutting edge</td> </tr> <tr><td>(e) Thrust</td> <td>(v) atm</td> </tr> <tr><td>(f) Moment of force</td> <td>(vi) N</td> </tr> <tr><td>(g) Atmospheric pressure</td> <td>(vii) N m</td> </tr> </table>
Question 127 :
A body weighing 5 kgf, placed on a surface of area 0.1 m{tex}^2{/tex}, exerts a thrust on the surface equal to
Question 131 :
A mercury thermometer makes use of the property of expansion of liquids on heating.
Question 132 :
Two rods A and B of the same metal, same length, but one solid and other hollow are heated to the same rise in temperature. Then
Question 136 :
A given volume of alcohol and the same volume of water are heated from the room temperature to the same temperature then
Question 143 :
Telephone wires are kept tight between the two poles in winter.
Question 145 :
Solids expand the least and gasses expand the most on being heated.
Question 146 :
All molecules of a liquid take part in the process of evaporation.
Question 148 :
Two rods A and B of the same metal, but of length 1m and 2m respectively are heated from 0 degree celsius to 100 degree celsius. Then
Question 149 :
All solids expand by the same amount when heated to the same rise in temperature.
Question 150 :
Equal volumes of different liquids expand by the different amount when they are heated to the same rise in temperature.
