List of top Questions asked in MHT CET

Identify the colloidal system if the dispersed phase and dispersion medium are both liquids.
The combination of \(\text{NO}_{2}(g)\) and \(\text{CO}(g)\) occurs in two steps as follows: What is the rate law for the reaction?
\(2\text{NO}_{2}\rightarrow \text{NO}+\text{NO}_{3}\) \((k_{1})\) - slow
\(\text{NO}_{3}+\text{CO}\rightarrow \text{CO}_{2}+\text{NO}_{2}\) \((k_{2})\) - fast
If the rate of a first order reaction is \(1.8\times 10^{-3}\ \text{mol L}^{-1}\text{minute}^{-1}\) at the initial concentration \(0.3\ \text{mol L}^{-1}\). Find the rate constant in terms of second.
Identify from the following the pair of solutions which on mixing exhibits positive deviation from Raoult's law.
\(2\text{MnO}_{2(s)}+2\text{NH}_{4}^{+}+2e^{-}\rightarrow \text{Mn}_{2}\text{O}_{3(s)}+2\text{NH}_{3(aq)}+\text{H}_{2}\text{O}_{(l)}\)
Which of the following cell exhibits above net reduction reaction?
Which of the following cell reactions is exhibited by fuel cell?
What is boiling point of solution containing \(7.45\ \text{g}\) of \(\text{KCl}\) in \(500\ \text{g}\) of water, assuming \(80\%\) dissociation of \(\text{KCl}\)? (molar mass of \(\text{KCl}=74.5\ \text{g/mole}\), \(k_{b}\) for water \(=0.52\ \text{K/molal}\))
Find the freezing point of a solution containing \(27\ \text{g}\) urea in \(1\ \text{dm}^{3}\) of the aqueous solution. [\(K_{f}=1.8\ \text{K kg mol}^{-1}\) and molar mass of urea \(=60\ \text{g mol}^{-1}\)]
For a reaction \(a\text{A}+b\text{B}\rightarrow\) Products, the rate law is found to be: Rate \(=k[\text{A}][\text{B}]^{2}\). What is the overall order of the reaction?
Calculate the equilibrium constant at \(25\ ^{\circ }\text{C}\) for the cell reaction, \(\text{Ni(s)}+\text{Cu}^{2+}(1\text{M})\rightarrow \text{Ni}^{2+}(1\text{M})+\text{Cu(s)}\) if \(E_{cell}^{\circ }\) is \(0.592\ \text{V}\).
What is the total number of tetrahedral voids present in a single fcc unit cell?
A metal forms fcc unit cell with unit edge length \(400\ \text{pm}\). Calculate the number of atoms present in \(0.6\ \text{g}\) of metal if the density of metal is \(12.0\ \text{g/cm}^{3}\)
A solid is formed of two different elements, A and B. In this atoms of A are arranged in the CCP array, and atoms of B occupy all octahedral voids and half of tetrahedral voids. Find the formula of the solid.
Which of the following is responsible for depletion of ozone layer in stratosphere?
Which one of the following alkenes forms the same product with HBr in the absence as well as in the presence of peroxide?
\(\text{H}_{3}\text{C}-\text{CH}=\text{CH}_{2}+\text{H}-\text{Br}\xrightarrow{(\text{C}_{6}\text{H}_{5}\text{CO})_{2}\text{O}_{2},\ \text{Benzoyl peroxide}}\text{H}_{3}\text{C}-\text{CH}_{2}-\text{CH}_{2}-\text{Br}\)
Which of the following rules is followed when the above reaction occurs?
Which of the following elements is the radioactive alkaline earth metal?
The Basic buffer solution is made with \(0.1\ \text{M}\ \text{NH}_{4}\text{OH}\) and \(0.2\ \text{M}\ \text{NH}_{4}\text{Cl}\). If \(K_{b}\) for the base is \(1.8\times 10^{-5}\), what is the pH of the buffer?
Identify the overlapping orbitals involved in hyperconjugation from following.
What is the oxidation number of phosphorus in \(\text{Mg}_{2}\text{P}_{2}\text{O}_{7}\)?
Which of the following statements regarding spontaneous process is NOT true?
The degree of dissociation of weak acid is directly proportional to
The solubility of \(\text{Fe(OH)}_{3}\) is \(x\) mole per liter. Find its \(K_{sp}\).
Find the pH of \(0.02\ \text{M}\ \text{HCl}\).
If,
i) \(\text{C}+2\text{S}\rightarrow \text{CS}_{2}\), \(\Delta H=117\ \text{kJ}\)
ii) \(\text{C}+\text{O}_{2}\rightarrow \text{CO}_{2}\), \(\Delta H=-393\ \text{kJ}\)
iii) \(\text{S}+\text{O}_{2}\rightarrow \text{SO}_{2}\), \(\Delta H=-297\ \text{kJ}\)
Find the heat of combustion of \(\text{CS}_{2}\).