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
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