JEE Main questions
34495 published questions with worked solutions.
- Given below are two statements: Statement I: Aluminium is more electropositive than thallium as the standard electrode potential...
- The correct statements among the following are. A. Basic vanadium oxide is used in the manufacture of H₂SO₄. B. The spin-only...
- Match the LIST-I with LIST-II. List-I (Electronic configuration of tetrahedral metal ion): A. d², B. d⁴, C. d⁶, D. d⁸. List-II...
- R_f value for 2-methylpropene in a solvent system (Ethyl acetate + ether) is 0.42. 2-methylpropene is treated with dilute H₂SO₄...
- Given below are two statements: Statement I: 2,6-diethylcyclohexanone and 6-methyl-2-n-propylcyclohexanone are metamers....
- Given below are two statements: Statement I: Methane can be prepared by decarboxylation of sodium ethanoate, Kolbe's electrolysis...
- Given below are two statements: Statement I: 3-phenylpropene reacts with HBr and gives secondary alkyl bromide having a chiral...
- Arrange the following compounds according to increasing order of boiling points. n-C₄H₉OH (A), n-C₄H₉NH₂ (B), n-C₄H₁₀ (C) and...
- Match the LIST-I with LIST-II. List-I (Deficiency Disease): A. Scurvy, B. Convulsions, C. Cheilosis, D. Xerophthalmia. List-II...
- Match the LIST-I with LIST-II. List-I (Amino acid): A. Glutamine, B. Lysine, C. Tyrosine, D. Serine. List-II (Positive...
- First and second ionization enthalpies of lithium are 520 kJ mol⁻¹ and 7297 kJ mol⁻¹ respectively. Energy required to convert 3.5...
- Consider the following sequence of reactions: diazoaminobenzene (Ph−N=N−NH−Ph) (i) HCl (ii) Aniline (in excess) (iii) Warm...
- 4.7 g of phenol is heated with Zn to give product X. If this reaction goes to 60% completion then the number of moles of compound...
- Sucrose hydrolyses in acidic medium into glucose and fructose by first order rate law with t₁/₂=3 hour. The percentage of sucrose...
- Consider the reaction X⇌Y at 300 K. If ΔH° and K are 28.40 kJ mol⁻¹ and 1.8×10⁻⁷ at the same temperature, then the magnitude of...
- Consider the relation R on the set −2, −1, 0, 1, 2 defined by (a, b) ∈ R if and only if 1 + ab > 0. Then, among the statements:...
- The number of values of z ∈ ℂ, satisfying the equations |z − (4 + 8i)| = √10 and |z − (3 + 5i)| + |z − (5 + 11i)| = 4√5, is:
- If the system of linear equations: x + y + z = 6, x + 2y + 5z = 10, 2x + 3y + λz = μ has infinitely many solutions, then the...
- Let A= bmatrix &1&2 2&3&0 0&4&5 bmatrix and B= bmatrix 1&0&0 0&-5 &0 0&4 &-2 bmatrix + adj (A). If det(B) = 66, then det(adj(A))...
- Let α = 3 + 4 + 8 + 9 + 13 + 14 + … upto 40 terms. If ( )^ 1020 is a root of the equation x² + x − 2 = 0, β ∈ (0, π/2), then...