List of top Chemistry Questions asked in MHT CET

What is the correct order of thermal stability of the following carbonates?
BaCO\(_3\), MgCO\(_3\), SrCO\(_3\), CaCO\(_3\)
What is the volume of oxygen required for complete combustion of 0.25 mole of methane at S.T.P.?
In the reaction \( \mathrm{2H_2 + O_2 \rightarrow 2H_2O} \), if 4 moles of hydrogen react completely with oxygen, how many moles of water will be produced?
Which of the following is an example of a redox reaction?
Which of the following elements does not have a completely filled outermost shell in its ground state?
Which of the following gases is most soluble in water?
Which of the following gases is most soluble in water?
Which of the following is the correct electron configuration for the ion \(\text{Fe}^{3+}\)?
Which of the following compounds is an example of an ionic bond?
Which of the following elements does not have a completely filled outermost shell in its ground state?
Which of the following is an example of a redox reaction?
Which of the following gases is produced when zinc reacts with dilute hydrochloric acid?
What is the pH of a 0.1 M NaOH solution?
What is the molarity of a solution prepared by dissolving 10 grams of NaOH in 250 mL of water? (Molar mass of NaOH = 40 g/mol)
What is the pH of a 0.01 M hydrochloric acid (HCl) solution?
In the reaction \( 2 \, \text{H}_2 + \text{O}_2 \to 2 \, \text{H}_2\text{O} \), if 4 moles of hydrogen react completely with oxygen, how many moles of water will be produced?
Which of the following coordination compounds exhibits geometrical isomerism?
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 \( \text{NH}_3 \)?
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 \( E_n = -\frac{13.6}{n^2} \, \text{eV} \)).
The rate constant for a first-order reaction is \( 0.0693 \, \text{min}^{-1} \). What is the half-life of the reaction?
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 = \( 58.5 \, \text{g/mol} \)).
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 \( \text{C}_2\text{H}_4 (\text{g}) \)?
Which of the following compounds will give a positive iodoform test?
In an electrochemical cell, the standard electrode potential of \( \text{Zn}^{2+}/\text{Zn} \) is \( -0.76 \, \text{V} \) and that of \( \text{Cu}^{2+}/\text{Cu} \) is \( +0.34 \, \text{V} \). What is the standard EMF of the cell formed by these electrodes?
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 \( 22.4 \, \text{L} \)).