JEE Main questions
34495 published questions with worked solutions.
- The covalent radii of atoms A and B are r_A and r_B, respectively. The covalent bond length and total length of AB molecule are...
- Consider the following data for the reaction X₂(g)+Y₂(g)⇌2XY(g) at 600 K. | Compound | ΔfH°₆₀₀K (kJ mol⁻¹) | S°₆₀₀K (J mol⁻¹K⁻¹)...
- The correct order of molar heat capacities measured at 298 K and 1 bar is:
- The reaction A(g)⇌B(g)+C(g) was initiated with the amount 'a' of A(g). At equilibrium it is found that the amount of A(g)...
- One half cell in a voltaic cell is constructed by dipping silver rod in AgNO₃ solution of unknown concentration, other half cell...
- Given below are two statements: Statement I: The number of pairs among [Al₂O₃, Cr₂O₃], [Cl₂O₇, Mn₂O₇], [Na₂O, V₂O₃] and [CO, N₂O]...
- Given below are two statements: Statement I: Presence of large number of unpaired electrons in transition metal atoms results in...
- Identify the correct statements from the following: A. [Fe(C₂O₄)₃]³⁻ is the most stable complex among [Fe(OH)₆]³⁻, [Fe(C₂O₄)₃]³⁻...
- Match List-I with List-II. List-I (Purification technique): A. Simple distillation, B. Fractional distillation, C. Steam...
- IUPAC names of some alkenes are given below. Find out the correct stability order. A. 2-Methylbut-2-ene, B. cis-But-2-ene, C....
- Identify the correct IUPAC name of hydrocarbon (X) containing three primary carbon atoms and with molar mass 72 g mol⁻¹.
- Given below are two statements: Statement I: The condensation reaction between CH₃−CH=O and H₂N−NH−C(=O)−NH₂ under optimum pH...
- Given below are two statements: Statement I: Heating benzamide with bromine in an ethanolic solution of sodium hydroxide will...
- Given below are two statements: Statement I: The two cyclic forms of D-(+)-glucose (α and β anomers differing at C1 hydroxyl...
- A paper dipped in a dil. H₂SO₄ solution of 'X' upon treatment with SO₂ gas turns into green. The compound 'X' is:
- The total number of unpaired electrons present in the d³, d⁴ (low spin), d⁵ (high spin), d⁶ (high spin) and d⁷ (low spin)...
- RMgI when treated with ice cold water liberated a gas which occupied 1.4 dm³/g at STP. The gas produced is further reacted with...
- 20 g hemoglobin in a 1 L aqueous solution (A) at 300 K is separated from pure water by semi permeable membrane. At equilibrium...
- At 298 K, the molar conductivity of x% (w/w) MX solution (aqueous) is 123.5 S cm² mol⁻¹. The conductance of same solution is...
- Let a, b ∈ ℂ. Let α, β be the roots of the equation x² + ax + b = 0. If β − α = √11 and β² − α² = 3i√11, then (β³ − α³)² is equal...