CBSE 12 Chemistry Question Paper-2022 Set-1

A reaction is second order in X and first order in Y. How is the rate affected when the concentrations of both X and Y are doubled?

Write the units of 'k' for a zero-order reaction and a first-order reaction.

Out of the following pairs, predict with reason which will allow greater conduction of electricity: 1M CH₃COOH solution or 0.1M CH₃COOH solution on dilution.

Arrange the following compounds in decreasing order of basic strength in aqueous solution: C₂H₅NH₂, (C₂H₅)₂ NH, (C₂H₅)₃N

On the basis of crystal field theory, write the electronic configuration for a d⁴ ion if Δₒ < P.

Using valence bond theory, predict the hybridization and magnetic character of [Ni(CN)₄]²⁻. (Atomic number of Ni = 28).

Write the formula of the following complex using IUPAC norms: Dichloridobis(ethane-1,2-diamine)cobalt(III).

When a coordination compound NiCl₂·6H₂O is mixed with AgNO₃, 2 moles of AgCl are precipitated per mole of the compound. What is the structural formula of the complex?

A first-order reaction is 50% complete in 40 minutes. Calculate the time required for the completion of 90% of the reaction. (Given: log 2 = 0.3010, log 10 = 1).

Which of the following reactions is used for the synthesis of primary amines?

Which of the following is a key difference between physisorption and chemisorption?

Which of the following ions of the 3d transition series (V³⁺, Cr²⁺, Cu⁺, Fe²⁺) is a strong reducing agent in aqueous solution?

The standard Gibbs energy (ΔᵣG°) for the cell reaction Zn(s)+2Ag⁺(aq)→Zn²⁺(aq)+2Ag(s) is -300 kJ mol⁻¹. Calculate E°cell for the reaction. (Given: 1F = 96500 mol⁻¹).

An organic compound 'X' with the molecular formula C₅H₁₀O forms a 2,4-DNP derivative, does not reduce Tollens' reagent but gives a positive iodoform test. What is the structure of compound 'X'?

What is a consequence of lanthanoid contraction?

Which of the following d-block elements may not be regarded as the transition elements?