Chemistry questions
29404 published questions with worked solutions.
- For the given hypothetical reactions, the equilibrium constants are as follows: X ⇌ Y; K₁ = 1.0, Y ⇌ Z; K₂ = 2.0, Z ⇌ W; K₃ =...
- Thiosulphate reacts differently with iodine and bromine in the reaction given below: 2S₂O₃²⁻ + I₂ → S₄O₆²⁻ + 2I⁻ and S₂O₃²⁻ +...
- Among the following halogens F₂, Cl₂, Br₂ and I₂. Which can undergo disproportionation reaction?
- Given below are two statements: Statement I: N(CH₃)₃ and P(CH₃)₃ can act as ligands to form transition metal complexes. Statement...
- Match List I with List II List-I (Elements): A. Cl, S B. Ge, As C. Fr, Ra D. F, O List-II (Properties in their respective...
- Iron (III) catalyses the reaction between iodide and persulphate ions, in which A. Fe³⁺ oxidises the iodide ion B. Fe³⁺ oxidises...
- Match List I with List II List-I (Compound): A. Fe₄[Fe(CN)₆]₃·xH₂O B. [Fe(CN)₅NOS]⁴⁻ C. [Fe(SCN)]²⁺ D. (NH₄)₃PO₄·12MoO₃ List-II...
- Number of complexes with even number of electrons in t₂g orbitals is – [Fe(H₂O)₆]²⁺, [Co(H₂O)₆]²⁺, [Co(H₂O)₆]³⁺, [Cu(H₂O)₆]²⁺,...
- The 'spin only' magnetic moment value of MO₄²⁻ is _____ BM. (Where M is a metal having least metallic radii among Sc, Ti, V, Cr,...
- Number of molecules from the following which are exceptions to octet rule is _____. CO₂, NO₂, H₂SO₄, BF₃, CH₄, SiF₄, ClO₂, PCl₅,...
- If 279 g of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will...
- Consider the following reaction A + B → C. The time taken for A to become 1/4th of its initial concentration is twice the time...
- A solution containing 10g of an electrolyte AB₂ in 100g of water boils at 100.52°C. The degree of ionization of the electrolyte...
- In qualitative test for identification of presence of phosphorous, the compound is heated with an oxidising agent. Which is...
- The shape of carbocation is:
- Given below are two statements: Statement (I): S_N2 reactions are 'stereospecific', indicating that they result in the formation...
- Match List-I with List-II. List-I (Test): (A) Bayer's test (B) Ceric ammonium nitrate test (C) Phthalein dye test (D) Schiff's...
- Identify the incorrect statements about group 15 elements: (A) Dinitrogen is a diatomic gas which acts like an inert gas at room...
- The equilibrium Cr₂O₇²⁻ ⇌ 2CrO₄²⁻ is shifted to the right in:
- Given below are two statements: Statement (I): A Buffer solution is the mixture of a salt and an acid or a base mixed in any...