VSA for MP2025

 1.Answer the following questions ( VSA) :

1.1 Fill in the blank : In Troposphere temperature ---------- with increase in altitude .

1.2 Mention one harmful effect of global warming .

1.3 Which atom released from chloroflorocarbon under the influence of UV rays decompose ozone into oxygen ?

1.4 Mention one use of bio- gas .

1.5 What is the role NO in decomposition of ozone in the ozone layer ?

1.6 Among charcoal , petrol and ethanol which one is a fossil fuel ?

1.7 Write down the unit of calorific value of fuel .

1.8 Does the temperature increase or decrease with increase of altitude in the Stratosphere ?

1.9 Which radiation , coming from the sun , is prevented by the Ozone layer from falling on the earth’s surface ?

1.10 Which fuel gas is harvested from coal bed ?

1.11 Name a gas present in air , the increase in amount of which causes global warming .

1.12 Name an energy source which can be used for sustainable development.

1.13. Mention one fuel which is alternative to fossil fuel .

1.14 Write the name of a gas which increases atmospheric temperature .

1.15 Fill in the blank: -------- radiation ,coming from the sun is prevented by the ozone layer from falling on the earths surface .

1.16 Name a gas present in the atmosphere which is not a greenhouse gas .

1.17 What is meant by – the calorific value of a sample of coal is 30000 kJ/kg ?

1.18 Why can wind energy be used for sustainable growth development ?

1.19 Write whether the following statement is true and false : Inder the same condition of temperature and pressure equal volume of CO2 and N2 gas contain different number of molecules.

1.20 Write down the relation between the pressure and volume of a given mass of a gas according to Boyle’s law when temperature remains constant.

1.21 What is the unit of M in the equation PV = W/M RT ? ( Symbol s have usual meaning)

1.22 Under constant pressure, at what temperature in degree Celsius the volume of an ideal gas will be zero according to Charles ‘ law ?

1.23 State whether the following statement is true or false : The volume of gas molecules is taken into consideration in Avogadro’s Law .

1.24 The product of volume and pressure of how many gram of N2 gas is 224 litre atmosphere at STP ?(N = 14)

1.25 Write whether the following statement is true or false : The speed of the gas molecules contained in a closed vessel at fixed temperature and pressure is the same .

1.26 What is the nature of V versus T graph according to Charles’ law .

1.27 What is the SI unit of pressure of gas ?

1.28 What are the constants in Charles law ?

1.29 Write whether the following statement is true or false : Per degree interval in Kelvin scale of temperature is equal to perform degree interval in Celsius scale .

1.30 At a certain pressure the volume of a fixed mass of a gas at a temperature of 00 C is V0 ; what will be the increase in volume of the gas , according to Charles’ law , if the temperature of the gas is raised by 10C keeping the pressure unchanged ?

1.31 What will be the ratio of molecules present in 1 L of H2 and 4 L CO2 gas at STP ?

1.32 Between apparent and real expansion coefficients of a liquid which one is it’s own characteristic?

1.33 What is the SI unit of thermal conductivity ?

1 34 Whether the following statement is true or false? The real expansion of any liquid depends on the expansion of the vessel in which it is kept .

1.35:Among iron , invar and copper which one has the least co-efficient of linear expansion?

1.36 State whether the following statement is true or false. The constituent of a material change position during conduction of heat through it .

1.37 The width and the cross- section of a conductor remaining unchanged , what is the relation between the thermal resistance and thermal conductivity of that conductor?

1.38 Write whether the following statement is true or false: Among copper , invar and iron the linear expansion coefficient of iron is the lowest .

1.39 What is the unit of volume expansion coefficient?

1.40 Write whether the following statement is true or false: The value of coefficient of linear expansion of solid is the same in Celsius and Kelvin scale .

1.41 Arrange diamond iron and silver in the order of decreasing thermal conductivity.

1.42 Give a natural example of dispersion of light .

1.43 Which type of lens can rectify myopic vision ?

1.44 Between the angle of incidence and the angle of refraction which one is greater when light travels from a rarer to a denser medium ?

1.45 What type of mirror is used in the viewfinder of a motor car ?

1.46 What will be the angle of incidence when a ray of light passes through the centre of curvature of a concave mirror ?

1.47 How many rectangular surfaces are there in a prism ?

1.48 What is meant by the pole of a spherical mirror ?

1.49 Write down one use of X- ray .

1.50 Is it possible to form a virtual image of shorter length of the object by any mirror ?

1.51 What type of mirror is used in the head light of a motor car ?

1.52 If the refractive indices of a medium for red and blue colors of light are nr and nb respectively , which one is greater in magnitude ?

1.53 Write one use of convex mirror?

1.54 A ray parallel to the principal axis of a concave mirror follows which path after reflection by the concave mirror ?

1.55 How much work has to be done when 1 coulomb of charge is taken against a potential difference of 1 volt ?

1.56 From which part of a radioactive atom is beta particle emitted ?

1.57 what is the atomic number of the daughter element produced if an alpha particle is emitted from 238 U92 ?

1.58 How does the resistance of a semiconductor change with increase of temperature?

1.59 Which type of energy is transformed to electrical energy in a dynamo ?

1.60 Arrange alpha, beta and gamma rays in ascending order of their penetrating power ?

1.61 Which kind of nuclear reaction is the source of sun’s energy ?

1.62 Give an example of semiconductor.

1.63 A thin wire and a thick wire of the same conducting material have the same length .Which one of them will carry more current when connected to the same potential difference?

1.64 Mention one misuse of nuclear fission reaction .

1.65 Which law explain the release of huge amount of energy in nuclear fusion ?

1.66 Write down one use of X - ray .

1.67 Name a machine where electrical energy is converted to mechanical energy.

1.68 Apart from the live wire , what are the two other wires in the household circuit ?

1.69 What is the SI unit of electric charge ?

1.70 What is the unit of electrical conductance ?

1.71 What are the constituents of fuse wire ?

1.72 Kilowatt-hour is the unit of which physical quantity ?

1.73 If the same potential difference is applied between the two ends of iron and copper wires having the same length and cross section , does equal amount of current flow through the two wires ?

1.74 Draw I – V graph according to ohm’s law in the case of metallic wires .

1.75 Mention one peaceful use of atomic energy.

1.76 Fill in the blank : gamma ray is ------------ wave of short wavelength .

Mp 2025MCQ

 MCQ for MP 2025

1. Choose the correct alternative (MCQ) :answer keys for Q1 to 20 :(https://forms.gle/Qn2ZzzjugwYt7Vt18)  Q 21 to40 : (https://forms.gle/AK3F2oryd2T7dH6A6)

1.1 Which of the following is not a greenhouse gas ? a) methane b) water vapour c) carbon dioxide d) oxygen

1.2 Which of the following greenhouse gases has a maximum contribution towards global warming? a) N2O b) CH4 C) CO2 d) H2O vapour

1.3 Which among the following gases absorb long wavelength infrared radiation emitted from the earth’s surface ? a) N2 b) O2 c) CH4 d) He

1.4 Which among the following gases does not help in the depletion of ozone in the ozone layer ? a) NO b) NO2 c) CFC d) CO2

1.5 Which layer of atmosphere has the greatest density ? a) Troposphere b) Stratosphere c) Mesosphere d) Thermosphere

1.6 Which of the following gas helps in the depletion of ozone layer? a) CO2 b) Ar c) CFC d) He

1.7 Which is the main constituent of bio gas ? a) CH4 b) CFC c) CO2 d) CO

1.8 When do real gases behaves as ideal gas ? a) at high temperatures and high pressure b) at high temperatures and low pressure c) at low temperatures and low pressure d) at low temperatures and high pressure

1.9 At STP number of moles in 44 g CO2 is – a) 1 b) 2 c) 3 d) 4

1.10 What is value of PV for 4 g of H2 has at STP ( H = 1 ) a) RT b) 2 RT c) 4 RT d) 0.5 RT

1.11 In case of ideal gas ratio of coefficient of volume and pressure expansion is – a) 0 b) 1 c) 1/273 d) 2

1.12 The P – V graph of Boyle’s Law related to gas is –

1.13 What is the value PV for 11.2 litres of an ideal gas at STP ? a) 2RT b) RT c) 0.5 RT d) 11.2 RT

1.14 At STP 2.24 L is occupied by – a) 4.4 g CO2 b) 0.64 g SO2 c) 28 g CO d) 16 g O2 ( C = 12 , O = 16 , S = 32 )

1.15 According to Boyl’s law which is the PV – P graph –

1.16 Which of the following is the SI unit of pressure ? a) Nm2 b) Nm-2 c) Nm d) N

1.17 Vapour density of a gas is 32 . Which of the following is its molecular weight ? a) 8.b) 16 c) 32 d) 64

1.18 If the vapour density of a carbon containing gaseous substance is 13 , which of the following can be its molecular formula? a) CO2 b) C2 H4 c) C2H6 d) C2H2

1.19 How many molecules of CO2 will be produced when one mole of C reacts completely with 1 mole O2 ? a) 6.022 x 1023 b) 1.806 x 1024 c) 6.022 x 1022 d) 6.022 x 1024

1.20 According to to the following chemical equation CH4 + 2 O2 = CO2 + 2H2O what volume of O2 will be required to burn 10 mole of CH4 at STP ? a) 448 L b) 224 L c) 44.8 L d) 22.4 L

1.21 The relation between molecular mass ( M) and vapour density ( D) of a gaseous substance is – a) 2M = D b) M = D2 c) M = 2.8 D d) M = 2D

1.22 How many gram of O2 will be required to make CO2 by burning 12 g of C completely ? ( C = 12 O = 16) a) 32 g b) 12 g c) 16 g d) 44 g

1.23 On which of the following does the thermal conductivity of a metal depend ? a) temperature b) length c) nature of the material d) area of cross section.

1.24 The unit of co-efficient of linear expansion of a solid is – a) m b) m-1 c) o C-1 d) oC

1.25 For a solid how many types of thermal expansion co-efficients are there ? a) one b) two c) three d) four

1.26 Which among the following substances has the highest heat conductivity? a) Silver b) Diamond c) Copper d) Aluminium

1.27 How many types of thermal expansion coefficient are there for a liquid ? a) 0 b) 1 c) 2 d) 3

1.28 What is the relation between the radius of curvature and the focal length of a mirror?a) f = 2r b) f = r/2 c) f = r/3 d) f = 3/2 r

1.29 Which of the following colours deviates most when white light is retracted by a prism ? a) red b) yellow c) violet d) green

1.30 From the following which states the relation between refractive index and wavelength of light ?

1.31 An object is placed in between the optical centre and focus of a thin convex lens . What is the nature of image of the object ? a) real and inverted b) virtual and inverted c) real and erect d) virtual and erect

1.32 Magnified virtual image is formed by a) convex mirror b) convex lens c) concave lens d) plain mirror .

1.33 When a ray of light is incident perpendicularly on a transparent glass slab the angle of incidence is – a) 0o b) 1800 c) 30o d) 90o

1.34 Which one of the following has the highest wavelength? a) X- ray b) gamma ray c) infrared ray d) ultraviolet ray

1.35 In case of refraction , if the angle of incidence and the angle of refraction are 450 and 300 respectively, then the angle of deviation is – a) 750 b) 150 c) 7.50 d) 37.50

1.36 If a beam of red light and a beam of violet light are incident at the same angle on the on the inclined surface of a prism from air medium and produce angles of refraction r and b respectively, which of the following is correct? a) r = v b) r = 1/v c) r > v d) r < v

1.37 A point source of light is placed at the centre of curvature of a concave mirror. The angle of deviation of the rays incident from this source and reflected from it , is – a) 00 b) 1800 c) 900 d) 3600

1.38 The wavelength of which of the following is greater than the visible light ? a) X- ray b) infrared ray c) gamma ray d) ultraviolet ray

1.39 Dentists use – a) convex mirror b) convex lens c) concave mirror d) concave lens

1.40 In the case of refraction of white light through prism the light of colour which deviates least is a) yellow b) orange c) red d) violet

1.41 If a reflected ray from a concave mirror makes an angles of 450 with the normal , the angle of incidence will be – a) 900 b) 22.50 c) 1350 d) 450

1.42 Which of the following physical quantities represents ampere ? a) coulomb – second b) volt-1ohm c) volt- ohm-1 d) volt- ohm .

1.43 Resistivity of which of the following decreases with increase of tempe? a) conductor b) semiconductor c) superconductor d) insulator

1.44 Which of the following is the correct order of ionisation power for alpha , beta and gamma rays ? a) alpha>beta >gamma b) alpha > gamma> beta c) gamma>beta>alpha d) beta> alpha> gamma

1.45 Which of the units given below is the SI unit of resistance? a) volt b) ampere c) coulomb d) ohm

1.46 In domestic electric cirçuit the fuse wire is connected to which of the following? a) earth line b) live line c) neutral line d) v th live and neutral line

1.47 Beta – ray emitted from a radioactive element is – a) a stream of electrons b) a stream of protons c) a stream of neutrons d) electromagnetic wave

1.48 Temperature remaining constant if the potential difference between two ends of a conductor is V and the current through the conductor is I , which of the following is true ? a) V proportional to I b) V proportional to I2 c) V proportional to I-1 d) V proportional to I-2

1.49 The relation among electromotive force (V) work(W) and charge (Q) is – a) Q = WV b) Q = V/W c) Q = V/W2 d) Q = W/V

1.50 For the atom produced by beta particle emission from a radioactive atom – a) mass number increases b) atomic number increases c) mass number decreases d) atomic number decreases

1.51 Coulomb’s law related to electric charges applicable when of the two charges – a) one point , one is spherical b) both are spherical c) one is point ,one is extended d) both are points charges

1.52 The characteristics of a fuse wire are – a) high resistance,high melting point b) low resistance, low melting point c) low resistance ,high melting point d) high resistance,low melting point

1.53 Present in alpha particle – a) one proton ,one neutron b) one proton c) two protons ,two neutrons d) one electron

1.54 Charge of an electron is - a) – 3.2 x 10-19 C b) – 1.6 x 10 – 19 C c) 1.6 x 10 – 19 C d) 3.2 x 10 – 19 C

1.55 If the resistance( R) of a conductor and the time of flow of current in the conductor ( t) remain unchanged , the relation between the heat produced (H) in the conductor and flow of current (I) is – a) H proportional to I b) H proportional to 1/I2 c) H proportional to I2 d) H proportional to 1/I

1.56 If 12 C of charge flows through a conductor for 2 minutes the electric current is – a) 6 amperes b) 0.1 amperes c) 24 amperes d) 10 amperes

1.57 What is the unit of conductivity ? a) mho metre-1 b) ohm.metre-1 c) mho.metre d) ohm .metre

1.58 If a current of 0.2 ampere flows through a conductor of resistance 40 ohm , what is the potential difference between the two ends of the conductor? a) 0.5 volt b) 2 volt c) 6 volt d) 8 volt

1.59 The correct order of penetrating power of alpha ,beta and gamma rays is – a) gamma>alpha>beta b) gamma >beta> alpha c) alpha> beta>gamma d) beta> gamma > alpha

1.60 Electric current is flowing through a wire . In this state the wire is elongated in length current will be – a) increased b) decreased c) first increased and then decreased d) will not depend on increase of length

1.61 If 5 ampere current flows through a conductor in 30 second the total charge flowed through the wire is a) 6 coulomb b) 150 coulomb c) 30 coulomb d) 300 coulomb