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JEE Main practice questions

NTA-style Physics, Chemistry and Maths MCQs with solutions. 2,688 questions in the bank.

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  1. 1Water flows in a horizontal tube (see figure). The pressure of water changes by 700 Nm-2 between A and B where the area of cross section…Physics· Mechanical Properties of Fluids· Moderate· figure
  2. 2The vessel shown in the figure has two sections of areas of cross-section [IMAGE] and [IMAGE]. A liquid of density ρ fills both the…Physics· Mechanical Properties of Fluids· Moderate· figure
  3. 3Two liquids of densities $\rho_{1}\ $and $\rho_{2}\left( \rho_{2} = 2\rho_{1} \right)$ are filled up behind a square wall of side 10 m as…Physics· Mechanical Properties of Fluids· Moderate· figure
  4. 4A leak proof cylinder of length 1 m, made of a metal which has very low coefficient of expansion is floating vertically in water at 0°C…Physics· Mechanical Properties of Fluids· Moderate· figure
  5. 5The following graph shows two isotherms for a fixed mass of an ideal gas. The ratio of r.m.s speed of the molecules at temperatures T_1 and…Physics· Kinetic Theory of Gases· Moderate· figure
  6. 6An ideal gas whose internal energy U is at absolute zero temperature is equal to zero undergoes areversible adiabatic compression. If U, P,…Physics· Thermodynamics· Moderate· figure
  7. 7P-V diagram of ideal monoatomic gas is as shown. Find net heat given to the gas in the process ABC.Physics· Thermodynamics· Moderate· figure
  8. 8V-T diagram for a process of a given mass of ideal gas is as shown in the figure. During the process pressure of gas. çfØ;kPhysics· Thermodynamics· Moderate· figure
  9. 9For an adiabatic process graph between PV & V for a sample of ideal gas will be: vkn'kZ xSl ds,d uewus dk:)ks"k çØePhysics· Thermodynamics· Moderate· figure
  10. 10One mole of an ideal gas at pressure P_0, volume V_0 and temperature T_0 is expanded isothermally to twice its volume and then compressed…Physics· Thermodynamics· Moderate· figure
  11. 11A certain quantity of oxygen [IMAGE] is compressed isothermally until its pressure is doubled [IMAGE]. The gas is then allowed to expand…Physics· Thermodynamic· Moderate· figure
  12. 12During an experiment an ideal gas is found to obey condition gas). The gas is initially at a temperature [IMAGE], pressure [IMAGE] and…Physics· Behaviour of perfect gases· Moderate· figure
  13. 13The figure shows the P-V plot of an ideal gas taken through a cycle DCBAD then dks pØ DCBADPhysics· Thermodynamics· Moderate· figure
  14. 14In a cyclic waste power plant for thermal decomposition of waste hot gases are supplied from a "Kentuki Chamber" where gases are heated…Physics· Behaviour of perfect gases· Moderate· figure
  15. 15One mole of an ideal gas is kept enclosed under a light piston (area=[IMAGE] ) connected by acompressed spring (spring constant 100 N / m).…Physics· Behaviour of perfect gases· Moderate· figure
  16. 16The ratio of r.m.s. speed to the r.ms. angular speed of a diatomic gas at certain temperature is:(assume m= mass of one molecule mass I =…Physics· Kinetic Theory of Gases· Moderate
  17. 1732 g of [IMAGE] is contained in a cubical container of side 1 m and maintained at a temperature of [IMAGE]. The isothermal bulk modulus of…Physics· Behaviour of perfect gases· Moderate· figure
  18. 18Consider a mixture of n moles of helium gas and 2 n moles of oxygen gas (molecules taken to be rigid) as an ideal gas. Its [IMAGE] value…Physics· Kinetic Theory of Gases· Moderate· figure
  19. 19Two moles of an ideal gas with [IMAGE] are mixed with 3 moles of another ideal gas with [IMAGE] Thevalue of [IMAGE] for the mixture is eksy=Physics· Kinetic Theory of Gases· Moderate· figure
  20. 20An ideal gas obey the law [IMAGE] constant. x is value for which it has zero molar specific heat at normal temperature. Then find 5 x.…Physics· Thermodynamics· Moderate· figure
  21. 21A Carnot engine operates between two reservoirs of temperatures 900 K and 300 K. The engineperforms 1200 J of work per cycle. The heat…Physics· Thermodynamics· Moderate· figure
  22. 22A ring shaped tube contains two ideal gases with equal masses and atomic mass numbers M_1­=32 and M_2=28. The gases are separated by one…Physics· Kinetic Theory of Gases· Tough· figure
  23. 23Under an adiabatic process, the volume of an ideal gas gets doubled. Consequently the mean collisiontime between the gas molecules changes…Physics· Thermodynamics· Moderate· figure
  24. 24If N Joules of heat is to be transferred to nitrogen in the isobaric heating process for that gas to perform the work A =2.0 J then the…Physics· Isobaric process· Moderate· figure
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