Question 1 : Click and choose the correct answer.<br>The consequence of improper handling of electricity is

Question 2 : Click and choose the correct option.<br>The effect of a force depends upon the area over which it acts.

Question 3 : Click and choose the correct answer.<br>The quality of sound is mainly determined by the ____________ of vibration.

Question 4 : Click and choose the correct answer.<br>In which of the following situations, no work is said to be done?

Question 5 : Click and choose the correct answer.<br>A battery is a collection of cells in

Question 6 : Click and choose the correct answer.<br>A mirror in which the inner hollow surface is the reflecting surface is called a

Question 7 : Click and choose the correct option.<br>A ____________ is an instrument used to measure the relative density of liquids.

Question 8 : Click and choose the correct option.<br>Power can be transformed from one form to another.

Question 9 : Click and choose the correct answer.<br>The geometrical centre of a spherical mirror is called the

Question 10 : Click and choose the correct answer.<br>A __________ is used to measure the atmospheric pressure.

Question 11 : 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 12 : 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 13 : Click and choose the correct option.<br>The change of a substance from its liquid state to its gaseous state at any temperature below its boiling point is called

Question 14 : Click and choose the correct answer.<br>A ___________ is a device used to measure the pressure exerted by a liquid.

Question 15 : Click and choose the correct answer.<br>Concave mirrors are used in solar heaters.

Question 16 : Click and choose the correct answer.<br>A hydrometer is usually made of metal.

Question 17 : Click and choose the correct answer.<br>The molecules of liquids are less tightly packed in a small volume as compared to solids.

Question 18 : Click and choose the correct answer.<br>A/An _________ is defined as the smallest unit of matter.

Question 19 : 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 20 : Click and choose the correct option.<br>When a force acts on a body, which is free to move, the body starts moving in the direction of the applied force.

Question 21 : Click and choose the correct answer.<br>The top thick pin of a plug is always connected to the

Question 22 : Click and choose the correct answer.<br>The density of ice is more than that of water.

Question 23 : Click and choose the correct option.<br>What is the smallest unit of an element called?

Question 24 : Click and choose the correct answer.<br>The intermolecular force is inversely proportional to the _________.

Question 25 : Click and choose the correct option.<br>A manometer is used to measure atmospheric pressure.

Question 26 : Click and choose the correct answer.<br>In solids, the intermolecular force of attraction is

Question 28 : Click and choose the correct option.<br>The energy possessed by a flowerpot placed at the rooftop of a building is

Question 29 : Click and choose the correct answer.<br>Pitch of a sound depends on the ____________.

Question 30 : Click and choose the correct answer.<br>If the force applied on a body decreases, then the work done on it will

Question 31 : Click and choose the correct answer.<br>The relative density of a substance is defined as the ratio of the density of the substance to the density of water at 4 °C.

Question 32 : Click and choose the correct answer.<br>The pitch of a guitar depends on ___________.

Question 33 : Click and choose the correct answer.<br>The boiling of a pure liquid occurs at a fixed temperature called

Question 34 : Click and choose the correct answer.<br>The factors on which linear expansion depends on are

Question 36 : 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 37 : Click and choose the correct answer.<br>The image formed when reflected rays only appear to meet but do not actually meet is

Question 38 : Click and choose the correct option.<br>The constant upward and downward circulation of fluid forms currents in the medium called _____________.

Question 39 : Click and choose the correct option.<br>What is the process through which a solid directly changes from the solid state to its vapour state on heating?

Question 40 : Click and choose the correct option.<br>When a stone is lifted to a certain height, the work done on it is stored as

Question 41 : The pressure on a surface increases with an increase in the thrust on the surface.

Question 44 : All molecules of a liquid take part in the process of evaporation.

Question 45 : It is easier to hammer a blunt nail into a piece of wood than a sharply pointed nail.

Question 48 : For a given thrust,pressure is more on a surface of large area.

Question 50 : The process of a gas converting directly into solid is called vaporization.