MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions for Chemistry

The following reactions follow zero order kinetics, EXCEPT ____________.

How long would it take to electroplate a spoon with 0.1 mol of silver (108 g/mol) at a constant current of 2.0 A using AgNO₃?

Choose the CORRECT increasing order of the acidic strength of carboxylic acids from the following.

The rate of the reaction \[\ce{A + B -> C}\] is 3.6 × 10⁻² mol dm⁻³ s⁻¹ when [A] = 0.3 mol dm⁻³ and [B] = 0.2 mol dm⁻³. Calculate k if reaction is first order in A and zero order in B.

An element crystallizes in fcc type of unit cell. The volume of one unit cell is 24.99 × 10^-24 cm³ and density of the element 7.2 g cm^-3, Calculate the number of unit cells in 36 g of pure sample of element?

What is the percentage of unoccupied space in fcc unit cell?

For first order reaction the concentration of reactant decreases from 0.2 to 0.1 M in 100 minutes. What is the rate constant of the reaction?

How many Faradays of electricity is required to produce 4.8 g of Mg at cathode in the electrolysis of molten MgCl₂?
(Molar mass of Mg = 24 g/mol)

How many electrons are involved in the reaction, when 0.40 F of electricity is passed through an electrolytic solution?

Number of electrons involved in the reaction, when 1 Faraday of electricity is passed through an electrolytic solution is ______.

A first order reaction has rate constant 1 × 10⁻² s⁻¹. What time will, it take for 20 g or reactant to reduce to 5 g?

A first order reaction is 25% completed in 40 minutes. What is the rate constant k tor the reaction?

Which of the following salt contain interstitial water molecule in it?

Which among the following ore is concentrated by froth floatation process?

A reaction that is of the first order with respect to reactant A has a rate constant 6 min⁻¹. If we start with [A]₀ = 0.5 mol dm⁻³, when would [A] reach the value 0.05 mol dm⁻³?

Which ion has the highest value of theoretical magnetic moment?

The time of completion of 90% of a first order reaction is approximately ____________.

Three moles of an ideal gas are expanded isothermally from a volume of 300 cm³ to 2.5 L at 300 K against a pressure of 1.9 atm. The work done in joules is ____________.

IUPAC name of ethylenediamine is ____________.

Two electrolytic cells are connected in series containing CuSO₄ solution and molten AlCl₃. If in electrolysis 0.4 moles of 'Cu' are deposited on cathode of first cell. The number of moles of 'Al' deposited on cathode of the second cell is _______.