Chemistry questions
29404 published questions with worked solutions.
- Treatment of a gas 'X' with a freshly prepared ferrous sulphate solution gives a compound 'Y' as a brown ring. The compounds X...
- An excess of AgNO₃ is added to 100 mL of a 0.05 M solution of tetraaquadichloridochromium (III) chloride. The number of moles of...
- An alkane (Y) requires 8 moles of oxygen for complete combustion and on chlorination with Cl₂/hν, (Y) gives only one...
- 500 mL of 0.2 M MnO₄⁻ solution in basic medium when mixed with 500 mL of 1.5 M KI solution, oxidises iodide ions to liberate...
- In a closed flask at 600 K, one mole of X₂Y₄(g) attains equilibrium as given below: X₂Y₄(g)⇌2XY₂(g). At equilibrium, 75% X₂Y₄(g)...
- Decomposition of a hydrocarbon follows the equation k=(5.5×10¹¹ s⁻¹)e^(−28000 K/T). The activation energy of reaction is _______...
- An oxide of iron contains 69.9% iron, its empirical formula, is: (Given: Molar mass of Fe and O are 56 and 16 g mol⁻¹...
- Match the LIST-I with LIST-II. List-I (Orbital): A. 2s, B. 3s, C. 3p, D. 4d. List-II (Radial nodes and nodal plane): I. 1 Radial...
- The pairs among A=[SO₃²⁻, CO₃²⁻], B=[O₂²⁻, F₂], C=[CN⁻, CO], D=[NH₃, H₃O⁺] and E=[MnO₄²⁻, CrO₄²⁻] that do not have similar Lewis...
- When 0.25 moles of a non-volatile, non-ionizable solute was dissolved in 1 mole of a solvent the vapor pressure of solution was...
- One mole each of He and A(g) are taken in a 10 L closed flask and heated to 400 K to establish the following equilibrium....
- Consider the following data. | Electrolyte | Λ°m (S cm² mol⁻¹) | |---|---| | BaCl₂ | x₁ | | H₂SO₄ | x₂ | | HCl | x₃ | BaSO₄ is...
- 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...