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

The order of the reaction for which the unit of rate constant is s⁻¹ is ____________.

\[\ce{Dry ice + A -> 2-Methylbutanoic acid}\]. In this reaction 'A' is:

Half-life period of a first order reaction, \[\ce{A -> product}\] is 3.0 hours. What is the value of rate constant?

The units nanometer and picometer are related as ______.

Sodium crystallizes in bcc structure with radius 1.86 × 10⁻⁸ cm. What is the length of unit cell of sodium?

An element crystallizes bcc type of unit cell, the density and edge length of unit cell is 4 g cm⁻³ and 500 pm respectively. What is the atomic mass of an element?

An element with density 2.8 g cm⁻³ forms fcc unit cell having edge length 4 × 10⁻⁸ cm. Calculate molar mass of the element.

During the electrolysis of aqueous sodium chloride the product obtained at anode is ____________.

How many electrons flow when a current of 5 amp is passed through a cell for 200 sec?

Electrolysis of dilute aqueous solution of NaCl was carried out by passing 0.01 A current. What is the time required to liberate 0.01 moles of H_2(g) at the cathode?

During the electrolysis of molten sodium chloride, the product obtained at cathode is ____________.

For first order reaction the slope of the graph of log₁₀ [A]_t Vs. time is equal to ____________.

A first order reaction is 75% completed in 60 minutes, the time required for it's 50% completion is ____________.

In the reaction \[\ce{2SO2 + O2 -> 2SO3}\] the rate of appearance of SO₃ is 4 × 10⁻⁴ M/s, the rate of disappearance of O₂ is ____________.

Reaction given below follows first order kinetics:

\[\ce{2N2O2 -> 4NO2 + O2}\]

Calculate the rate constant of reaction if concentration of N₂O₂ is 0.05 M and rate of reaction is 1.5 × 10⁻⁶ mol L⁻¹ s⁻¹?

The slope of a graph, log [A]_t versus 't' for a first order reaction is −2.5 × 10⁻³ s⁻¹. The rate constant for the reaction is ____________.

Identify the product C in following reaction.

\[\ce{CH3CH2COOH ->[NaOH] A ->[NaOH][CaO*\Delta] B ->[HNO3][\Delta] C}\]

Which of the following is NOT formed when an equimolar mixture of bromomethane and bromobenzene is treated with sodium metal in dry ether?

Which among the following substances is used as a catalyst for thermal decomposition of potassium chlorate?

Which one has the lowest boiling point?