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

An element (atomic mass M g/mol) having bcc structure has unit cell edge 400 pm. The density of the element is ____________ g/cm³.

[N_A = 6.0 × 10²³ atom mol⁻¹)

The IUPAC name of the following compound.

\[\begin{array}{cc}
\phantom{.}\ce{CH(CH3)2}\\
|\phantom{........}\\
\ce{CH3 - CH2 - CH2 - CH - CH - CH2 - CH - CH2}\\
\phantom{............................}|\phantom{...................}|\phantom{...}\\
\phantom{...........................}\ce{CH2CH3}\phantom{...........}\ce{CH3}\phantom{}
\end{array}\]

Select the CORRECT match.

Identify X in the following reaction:

If [A] is the concentration of A at any time t and [A]₀ is the concentration at t = 0, then for the 1^st order reaction, the rate equation can be written as ____________.

A first order reaction completes its 10% in 20 minutes, then the time required to complete its 19% is ____________.

The CORRECT decreasing order of solubility in water will be ____________.

The first element of 3d series is ____________.

If [A]₀ is the initial concentration, then the half life of zero order reaction is ____________.

Which of the following are examples of weak bases?

Identify the functional group in the product formed.

\[\begin{array}{cc}
\phantom{...........}\ce{O}\\
\phantom{...........}||\\
\ce{C2H5 - N - H + CH3 - C - Cl ->[Pyridine][-HCl]}\\
|\phantom{......................}\\
\ce{C2H5}\phantom{..................}
\end{array}\]

The mass of sulphur dioxide produced by burning 32 g of sulphur in excess of oxygen in contact process is ____________ g.

(Average atomic mass: S = 32 u, O = 16 u).

How many total constituent particles are present in simple cubic unit cell?

Which among the following is a neutral complex?

Hydrides of transition metals are used as powerful ____________ agents.

When a solution of Grignard reagent is added to ____________ a magnesium salt of carboxylic acid is obtained which on acidification gives carboxylic acid.

The activation energy of a reaction is zero. Its rate constant at 280 K is 1.6 × 10^-6 s^-1, the rate constant at 300 K is ______.

The percentage of unoccupied volume in simple cubic cell is ______.

The CORRECT order of decreasing ionic radius is:

Which of the following compound gives a ketone with Grignard reagent?