List of top Questions asked in MHT CET

Which of the following types of nanostructures, the thin film is?

Which of the following binary solution exhibits higher vapor pressure than the vapour pressure of its pure components at same temprecure?

What is the SI unit of molar conductivity?

Calculate \(E_{cell}^{o}\) of the following cell at \(298\) K.
\(\text{Pb}_{(s)}|\text{Pb}_{(aq)}^{+2}||\text{Ag}_{(aq)}^{+}|\text{Ag}_{(s)}\)
\(E^{o}\text{Pb}^{+2}/\text{Pb}=-0.126\) V, \(E^{o}\text{Ag}^{+}/\text{Ag}=+0.799\) V

Calculate the amount of KCl that should be added to \(100\) g of pure water to decrease the freezing point of water by \(0.3535\) K, if \(K_{f}\) for water is \(1.86\) K kg mol\({}^{-1}\).
[Degree of dissociation of KCl (\(\alpha\)) \(=0.9\), Molar mass of KCl \(=74.5\) g/mol]

Calculate the temperature of the solution in which a solution containing \(10\) g solute in \(0.4\) dm\({}^{3}\) has an osmotic pressure of \(3.4\) atm.
[Molar mass of solute \(=180\) g mol\({}^{-1}\), \(R=0.082\) atm dm\({}^{3}\) K\({}^{-1}\)mol\({}^{-1}\)]

What is the mole fraction of ethanol in solution containing \(46\) g of ethanol and \(180\) g of water?
(Molar mass of ethanol \(=46\) g mol\({}^{-1}\), Molar mass of water \(=18\) g mol\({}^{-1}\))

What is the number of neutrons present in tritium?

What is the maximum number of nearest neighbors for a given lattice point in the hcp structure?

Consider the following compounds : \(\underline{\text{K}}\text{O}_{2}\), \(\text{H}_{2}\underline{\text{O}}_{2}\) and \(\text{H}_{2}\underline{\text{S}}\text{O}_{4}\). The oxidation state of the underlined elements in them are, respectively,

Which of the following catalysts is used in the hydrogenation of vegetable oil?

A compound is formed by two elements A and B. The elements B forms cubic close packed structure and atoms of A occupy \(1/3\)rd of tetrahedral voids. If the formula of the compound is \(A_{x}B_{y}\), then find the value of \((x+y)\).

What type of isomerism is exhibited by compounds \(\text{CH}_{3}\text{-CH}_{2}\text{-O-CH}_{2}\text{-CH}_{3}\) and \(\text{CH}_{3}\text{-CH}_{2}\text{-CH}_{2}\text{-O-CH}_{3}\)?

Which of the following is a strong electrolyte?

What is the \(\text{P}^{OH}\) of solution having \([\text{H}_{3}\text{O}^{+}]1\times 10^{-4}\) at \(298\) K?

Which among \(\text{F}_{2}\), \(\text{Cl}_{2}\), \(\text{Br}_{2}\) and \(\text{I}_{2}\) exhibit disproportionation reaction?

Which of the following enthalpy change is negative?

Calculate the pH of \(10^{-8}\) M HCl solution at \(25{}^{\circ }\)C.

Calculate \(\Delta _{f}H\) for \(\text{C}(s)+2\text{H}_{2}(g)\rightarrow \text{CH}_{4}(g)\)
i. \(\text{C}(s)+\text{O}_{2}(g)\rightarrow \text{CO}_{2}(g);\Delta H_{1}=-393.5\) kJ/mol
ii. \(\text{H}_{2}(g)+1/2\text{O}_{2}(g)\rightarrow \text{H}_{2}\text{O}(l);\Delta H_{2}=-285.8\) kJ/mol
iii. \(\text{CH}_{4}(g)+2\text{O}_{2}(g)\rightarrow \text{CO}_{2}(g)+2\text{H}_{2}\text{O}(l);\Delta H_{3}=-890.3\) kJ/mol

A hot air balloon has a volume of \(2800\) dm\({}^{3}\) at \(100{}^{\circ }\)C. What is the volume if air cools to \(27{}^{\circ }\)C?

Which of the following elements of group \(17\) has the highest negative electron gain enthalpy?

Identify a set of isoelectronic species from the following.

Which of the following sets of quantum numbers is incorrect for an electron in an atom?

For a certain reaction, change in enthalpy is \(-225\) kJ and entropy change \(=-150\) JK\({}^{-1}\). Find the temperature so that \(\Delta G\) is zero.

The truth table for the system of four NAND gates as shown in the figure is