List of top Chemistry Questions asked in MHT CET

A first order reaction is 50% completed in 10 minutes. Find the percentage of reactant reacting in 20 minutes.

A radioactive substance has a decay constant \(10^{-1}\) per year. What percentage of substance undergoes decay in 13.86 years?

Standard electrode potential of three metals X, Y and Z are \(-1.2\) V, \(+0.5\) V and \(-3.0\) V respectively. The reducing power of these metals will be

Calculate the pressure at which solubility of a certain gas in water is 0.165 mol L\({}^{-1}\) at \(25\ ^{\circ }\)C. (Henry's law constant for this gas in water is 0.034 mol L\({}^{-1}\)bar\({}^{-1}\) at \(25\ ^{\circ }\)C.)

What is the molality of an aqueous solution containing 6 % glucose by mass ? ( Molar mass of glucose = 180 g/mol )

If the volume of fcc unit cell is \(6.4\times 10^{-23}\) cm\({}^{3}\) find the radius of an atom in it.

0.636 g of acetic acid (molar mass = 60 g/mol) is dissolved in 1 kg of water, the solution freezes at \(-0.0205^{\circ }\)C.
Calculate van't Hoff factor of acetic acid (\(\text{K}_{f}\) water = 1.86 K-kg/mol)

Which one of the following elements when doped with silicon makes it p-type semiconductor ?

Which of the following ionic crystals exhibits Schottky defect?

Which of the following gases is evolved as a byproduct (A) in the following reaction,
\(\text{HC}\equiv \text{CH}+\text{LiNH}_{2}\xrightarrow{\text{solvent}}\text{HC}\equiv \text{C}^{-}\text{Li}^{+}+(\text{A})\)

What is use of Carbon tetrachloride?

Which of the following elements belongs to the isotope, tritium?

Which among the following is false statement for enantiomers?

What is the IUPAC name of Isoprene?

Find the p\(\text{K}_{b}\) of the weak base BOH, if its \(\text{K}_{b}\) is \(1\times 10^{-5}\) ?

Calculate the percent dissociation of a weak mono-acidic base if its concentration is 0.02 M.
[\(\text{K}_{b}\) for weak mono-acidic base = \(1.8\times 10^{-5}\)]

Which of the following properties of the system is both state function and intensive property as well?

Predict the oxidation number of 'C' in \(\text{K}_{2}\text{C}_{2}\text{O}_{4}\) and in \(\text{CH}_{2}\text{Cl}_{2}\).

For which of the following solids does solubility decrease with an increase in temperature?

Which of the following aqueous salt solutions is acidic?

For a reaction, \(\Delta \text{G}^{\circ }=-5.7\) kJ mol\({}^{-1}\) at 298 K. Calculate K.
( R = 8.314 J K\({}^{-1}\) mol\({}^{-1}\) )

Match the following

List I	List II
A. Technetium	I. Non-metal
B. Fluorine	II. Transition metal
C. Tellurium	III. Lanthanoid
D. Dysprosium	IV. Metalloid

Which among the following elements does NOT exhibit \(-2\) oxidation state?

What is the number of electrons in bonding molecular orbitals and antibonding molecular orbitals respectively in \(\text{F}_{2}\) molecule?

Calculate the amount of work done in the oxidation of 1 mole of HCl(g) at \(127^{\circ }\)C if
\(4\text{HCl(g)}+\text{O}_{2}\text{(g)}\rightarrow 2\text{Cl}_{2}\text{(g)}+2\text{H}_{2}\text{O(g)}\) ; [ R = 8.314 JK\({}^{-1}\) mol\({}^{-1}\)]