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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. 1A litre of hydrogen at [IMAGE] and [IMAGE] pressure expands isothermally until its volume becomes double and then expands adiabatically…Physics· Thermodynamics· Moderate· figure
  2. 2Figure shows the variation of internal energy "U" with the density "$\rho$ " of one mole of ideal diatomic gas. Process BA is a part of…Physics· Thermodynamics· tough· figure
  3. 3Pressure versus temperature graph of the ideal gas at constant volume V of an ideal gas is shown by a straight line A. Now, pressure P of…Physics· Kinetic Theory of Gases· Moderate· figure
  4. 4[IMAGE] gas follows the process, [IMAGE] constant. If then the ratio of work done by gas to change in itsinternal energy is [IMAGE] then n…Physics· Thermodynamics· Moderate· figure
  5. 5A litre of dry air at STP expands adiabatically to a volume of 3 litres. If [IMAGE] the work done by air is: air to be an ideal gas] 1 yhVj…Physics· Thermodynamic· Hard· figure
  6. 6A monoatomic ideal gas follows the process: The molar specific heat for this process is: ( R = gas constant) bl çØe ds fy, eksyjPhysics· Thermodynamics· Moderate· figure
  7. 7Two moles of hydrogen are mixed with n moles of helium. The root mean square speed of gas molecules in the mixture is $\sqrt{2}$ times the…Physics· Kinetic theory of gases· Moderate· figure
  8. 8Figure below shows two paths that may be taken by a gas to go from a state A to a state C. [IMAGE] In process AB, 400J of heat is added to…Physics· Thermodynamics· Moderate· figure
  9. 9A system undergoes three quasi-static processes sequentially as indicated in the given figure. $1 \rightarrow 2$is an isobaric process, $2…Physics· Thermodynamics· Tough· figure
  10. 1070 calories of heat is required to raise the temperature of 2 moles of an ideal gas at constant pressure from 30°C to 35°C (R= 2 cal…Physics· Kinetic Theory of Gases· Moderate· figure
  11. 11A coal based thermal power plant producing electricity operates between the temperatures 27ºC and227ºC. The plant works at 80 of its…Physics· Thermodynamics· Moderate
  12. 12A diatomic ideal gas is heated at constant volume until the pressure is doubled and again heated at constant pressure until volume is…Physics· Thermodynamics· Moderate· figure
  13. 13The efficiency $\eta$ of the cyclic process $\left( \gamma = \frac{5}{3} \right)$ is given by $\frac{50n}{23}$ then find out the value of…Physics· Thermodynamics· Moderate· figure
  14. 14For a fluid which is flowing steadily, the level in the vertical tubes is best represented by LFkk;h:i ls izokfgr nzoPhysics· Mechanical properties of liquid· Moderate
  15. 15The pressure gauge reading in metre of water column shown in the given figure will be: fp= esa ty LrEHkPhysics· Mechanical properties of liquid· Moderate· figure
  16. 16A long capillary tube of mass$'\pi^{'}\ gm$, radius 2 mm and negligible thickness, is partially immersed in a liquid of surface tension 0.1…Physics· Mechanical properties of liquid· Moderate· figure
  17. 17If two soap bubbles of different radii are connected by a tube:;fn fofHkUu f= nks lkcqu ds cqycqyksaPhysics· Mechanical properties of liquid· Moderate
  18. 18The stress versus strain graphs for wires of two materials A and B are as shown in the figure. If $Y_{A}$ and $Y_{B}$ are the Young's…Physics· Mechanical properties of solid· Moderate· figure
  19. 19A block is partially immersed in a liquid and the vessel is accelerating upwards with acceleration "a". The block is observed by two…Physics· Mechanical properties of liquid· Moderate· figure
  20. 20In 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
  21. 21A container of fixed volume has a mixture of one mole of hydrogen and one mole of helium in equilibrium at temperature T. Assuming the…Physics· Kinetic Theory of Gases· Tough· figure
  22. 22The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?…Physics· Mechanical properties of matter· Moderate
  23. 23M grams of steam at 100°C is mixed with 200g of ice at its melting point in a thermally insulated container. If it produces liquid water at…Physics· Thermal properties of matter· Moderate· figure
  24. 24In a cylinder-piston arrangement, air is under a pressure P_1. A soap bubble of radius r lies inside the cylinder, soap bubble has surface…Physics· Mechanical Properties of Fluids· Moderate· figure
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