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

Calcination is used in metallurgy for the removal of?

Smoke is an example of ______.

Tert-butyl methyl ether on treatment with hydrogen iodide in cold gives ______.

Name the process that is employed to refine aluminium.

Fluorobenzene (C₆H₅F) can be synthesized in the laboratory ______.

Which of the following electrolytes will be most effective in coagulating negative sol?

Formation of diethyl ether from ethanol is based oh a ______.

Blood may be purified by ______.

Van Arkel's method of purification of metals involves converting the metal to a ______.

Identify the colloidal molecule containing hydrophilic head and hydrophobic tail within it.

What is the pH of a 2.6 × 10^-8 MH⁺ ion solution? (log 2.6 = 0.4150)

In which among the following solids, Schottky defect is not observed?

Calculate Standard cell potential for a cell having following reaction, \[\ce{2Al(s) + 3Ni^{2+} -> 2Al^{3+} + 3Ni(s)}\]

`("E"_"Ni"^circ = - 0.25 "V" and "E"_"Al"^circ = 1.66 "V")`

Which of the following reactions is used to prepare aryl fluorides from diazonium salts and fluoroboric acid?

Starch is an example of which of the following type of colloid?

A sample of air turns lime water milky and also turns acidified potassium dichromate green in aqueous solution has low pH. This is due to the presence of pollutants.

Ethers when dissolved in cold concentrated sulphuric acid forms ______.

Identify positively charged sol from following.

A buffer solution is prepared in which the concentration of NH₃ is 0.30 M and the concentration of \[\ce{NH^+_4}\] is 0.20 M. If the equilibrium constant, K_b tor NH₃ equals 1.8 × 10^-5, what is the pH of the solution?

Identify the correct decreasing order of precipitation power of flocculating ion added, from following.