List of top Chemistry Questions asked in MHT CET

Which of the following gases is most soluble in water?
What is the pH of a 0.01 M hydrochloric acid (HCl) solution?
What is the pH of a 0.1 M NaOH solution?
Which of the following gases is produced when zinc reacts with dilute hydrochloric acid?
Which of the following is the correct IUPAC name for the compound with the molecular formula \( C_5H_{12} \) that contains a branched chain with a methyl group attached to the second carbon of a butane chain?
IUPAC name of the following compound:
What is the molarity of a solution prepared by dissolving 8.0 g of NaOH in enough water to make 2.0 L of solution? (Molar mass of NaOH = 40 g/mol)
What is the molarity of a solution prepared by dissolving 5.85 g of NaCl in water to make 250 mL of solution? (Molar mass of NaCl = \( 58.5 \, \text{g/mol} \)).
What volume of oxygen gas at STP is required to completely burn 12 g of methane (\( \text{CH}_4 \))? (Molar mass of \( \text{CH}_4 = 16 \, \text{g/mol} \), 1 mole of gas at STP occupies \( 22.4 \, \text{L} \)).
What is the pH of a 0.001 M NaOH solution?
What is the volume occupied by 1 molecule of water, if its density is 1 g/cm$^3$?
The enthalpy change for the reaction \( \text{C}_2\text{H}_4 (\text{g}) + 3\text{O}_2 (\text{g}) \rightarrow 2\text{CO}_2 (\text{g}) + 2\text{H}_2\text{O} (\text{l}) \) is \( -1410 \, \text{kJ/mol} \). If the standard enthalpies of formation of \( \text{CO}_2 (\text{g}) \) and \( \text{H}_2\text{O} (\text{l}) \) are \( -393.5 \, \text{kJ/mol} \) and \( -286 \, \text{kJ/mol} \) respectively, what is the standard enthalpy of formation of \( \text{C}_2\text{H}_4 (\text{g}) \)?
For the reaction \( \text{N}_2 (\text{g}) + 3\text{H}_2 (\text{g}) \rightleftharpoons 2\text{NH}_3 (\text{g}) \), the equilibrium constant \( K_c \) is \( 4.0 \times 10^{-2} \) at a certain temperature. If the equilibrium concentrations are \( [\text{N}_2] = 0.5 \, \text{M} \) and \( [\text{H}_2] = 1.5 \, \text{M} \), what is the equilibrium concentration of \( \text{NH}_3 \)?
Which of the following coordination compounds exhibits geometrical isomerism?
The energy of an electron in the second orbit of a hydrogen atom is \( -3.4 \, \text{eV} \). What is the energy of the electron in the third orbit? (Given: Energy of an electron in the \( n \)-th orbit of hydrogen is \( E_n = -\frac{13.6}{n^2} \, \text{eV} \)).
Which of the following compounds will give a positive iodoform test?
The rate constant for a first-order reaction is \( 0.0693 \, \text{min}^{-1} \). What is the half-life of the reaction?
In the reaction \( \text{Zn(s) + \text{Cu}^{2+}(aq) \rightarrow \text{Zn}^{2+}(aq) + \text{Cu(s)} \), what is the oxidation state of zinc in the products?}
For the reaction \( \text{N}_2(g) + 3 \, \text{H_2(g) \rightleftharpoons 2 \, \text{NH}_3(g) \), the equilibrium constant \( K_c \) at a certain temperature is \( 0.5 \). If the initial concentrations of \( \text{N}_2 \), \( \text{H}_2 \), and \( \text{NH}_3 \) are \( 1.0 \, \text{mol/L} \), \( 1.0 \, \text{mol/L} \), and \( 0 \, \text{mol/L} \) respectively, calculate the equilibrium concentrations of all species.}
In the reaction \( 2 \, \text{H}_2 + \text{O}_2 \rightarrow 2 \, \text{H}_2\text{O} \), how many moles of water are produced when 4 moles of hydrogen react with excess oxygen?
The wavelength of the light emitted by a hydrogen atom during a transition from \( n = 3 \) to \( n = 2 \) is \( 656.3 \, \text{nm} \). What is the energy of the photon emitted during this transition?
For a reaction, the rate law is given by \( \text{rate} = k[A]^2[B] \). If the concentration of \( A \) is doubled and the concentration of \( B \) is halved, how will the rate of the reaction change?
Which of the following reactions is an example of the Finkelstein reaction?
What is the pH of a solution with a hydrogen ion concentration of \(1 \times 10^{-4}\) mol/L?
The energy of the nth orbit of the hydrogen atom is given by: \[ E_n = - \frac{13.6}{n^2} \, \text{eV} \] What is the energy of the second orbit (n = 2) of the hydrogen atom?