Practice/Question bank/JEE Main

JEE Main practice questions

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

1. 1For a reaction: 2A(g) [IMAGE] 5B(g), if the rate constant for disappearance of is 4 × 10-2 M sec-1 then calculate rate of formation of B…Chemistry· figure
2. 2The electrode potentials for [IMAGE] and [IMAGE] are are respectively. The value of [IMAGE] will beChemistry· figure
3. 3The first noble gas compound formed was........... and reason behind this discovery was.........Chemistry
4. 4In adjoining diagram depicts the temperature behavior of the rate constant, k for two reactions A and B. Which of the following is correct…Chemistry· figure
5. 5Which of the following metal salt gives chromyl chloride test?Chemistry
6. 6A reaction follows the given concentration reaction (M) v/s time graph. The instantaneous rate for this reaction at 20 seconds will beChemistry· figure
7. 7[IMAGE] Reagent for the above reaction will beChemistry· figure
8. 8What is the final product of the following reaction?Chemistry· figure
9. 9In which reaction correct product is given ?Chemistry· figure
10. 10In the reaction shown below, the major product(s) formed is/areChemistry· figure
11. 11The decreasing order of the rate of nitration of the following compounds is: (i) Benzene [IMAGE] (ii) Hexadeutero benzen [IMAGE] (iii)…Chemistry· figure
12. 12JM-CH-02-Q19Chemistry· figure
13. 13A following mechanism has been proposed for a reaction The rate law expression for the reaction isChemistry· figure
14. 14[IMAGE] Product isChemistry· figure
15. 15Given that (in[IMAGE] ) at T = 298 K: [IMAGE] are 228.8,120.3 & 129.8 respectively. Specific conductance for 0.2 N [IMAGE] solution is…Chemistry· figure
16. 16The half life periods of a reaction at initial concentrations [IMAGE] and [IMAGE] are 200 sec and 40 sec respectively. The order of…Chemistry· figure
17. 17Among the following inter halogen compounds, the total number of compounds that exist in the gaseous state at room temperature isChemistry· figure
18. 18How many of the following compounds give benzene on reaction with PhMgBr? (a) [IMAGE] (b)Chemistry· figure
19. 19are INTEGER ANSWER TYPE Questions. (The answer of each of the questions is 2 digits integer)]Chemistry
20. 20A greenish yellow gas reacts with an alkali metal hydroxide to form a halite which can be used in fire works and safety metals. The gas and…Chemistry· figure
21. 21The passage of current liberates [IMAGE] at cathode and [IMAGE] at anode. The solution isChemistry· figure
22. 22Variation of resistance with increase in cell constant gives graph of the typeChemistry· figure
23. 23[IMAGE] In the above reaction,[IMAGE] acts asChemistry· figure
24. 24[IMAGE] X isChemistry· figure