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

The unpaired electrons in Ni(CO)₄ are ______.

Calculate the work done during compression of 2 mol of an ideal gas from a volume of 1m³ to 10 dm³ 300K against a pressure of 100 KP a.

18 g of glucose (C₆H₁₂O₆) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at l00°C is ______.

Which among the following reactions is an example of pseudo first order reaction?

The rate constant for a first order reaction is 7.0 × 10^-4 s^-1. If initial concentration of reactant is 0.080 M, what is the half-life of reaction?

What is the actual volume occupied by water molecules present in 20 cm³ of water?

Which of the following is correct for a first-order reaction?

At anode in the electrolysis of fused NaCl:

Calculate the quantity of electricity required to produce 0.42 g Ag at cathode during the electrolysis of AgNO₃ solution. (Molar mass Ag = 108 g mol^-1)

Calculate half-life of a first order reaction in minute if the rate constant is 1 × 10^-3 s^-1.

What is the number of unpaired electrons of nickel observed in \[\ce{[Ni(CN)4]^{2-}}\]?

Which of the following carboxylic acids is most reactive towards esterification?

Two moles of an ideal gas are allowed to expand from a volume of 10 dm³ to 2 m³ at 300 K against a pressure of 101.325 KPa. Calculate the work done.

Calculate the density of metal with molar mass 56 g mol^{- 1} that crystallises to form a bcc structure with edge length 288 pm.

A weak monobasic acid is 2% dissociated in its 0.01 M solution. What is the dissociation constant of a weak acid?

Identify unit cell from following having four particles in it

Both acetaldehyde and acetone will react with X reagent. Identify the reagent X.

Half-life of a first order reaction is 30 minutes and initial concentration of reactant is 0.1 M.

What is half-life of the reaction if initial concentration of reactant is doubled? 

Which is the relation between half life and rate constant for a zero order?

The final product in the following sequence of reaction is