List of top Chemistry Questions asked in MHT CET

The enthalpy change for the reaction \( \text{C} + \text{O}_2 \rightarrow \text{CO}_2 \) is \( -393.5 \, \text{kJ/mol} \). What is the heat released when 2 moles of carbon react with excess oxygen?
A solution contains 10 g of NaOH dissolved in 500 mL of water. What is the molarity of the NaOH solution?
What is the total number of moles of gas in a 5 L container at 300 K and 2 atm pressure (Use the ideal gas law)?
What is the percentage composition of nitrogen in ammonium nitrate (\( \text{NH}_4\text{NO}_3 \))?
What is the standard electrode potential for the half-reaction \( \text{Cu}^{2+} + 2e^- \rightarrow \text{Cu} \)?

What is the empirical formula of a compound containing 40% sulfur and 60% oxygen by mass?

What is the value of the ionization energy of hydrogen in joules? (Given that the ionization energy of hydrogen is \( 13.6 \, \text{eV} \))
What is the total number of orbitals in the third energy level (n = 3)?
A sample of an ideal gas occupies 10 liters at a pressure of 2 atm and a temperature of 300 K. What is the volume of the gas at 1 atm pressure and 300 K temperature?
Calculate the oxidation number of sulfur in \( \text{H}_2\text{SO}_4 \).
What is the mass of sodium chloride (\( \text{NaCl} \)) formed when 0.5 moles of sodium (\( \text{Na} \)) reacts with excess chlorine (\( \text{Cl}_2 \))?
What is the molecular geometry of \( \text{SO}_3 \)?
What is the oxidation state of chromium in \( \text{K}_2\text{Cr}_2\text{O}_7 \)?
The pH of a solution is 3. What is the concentration of \( \text{H}^+ \) ions in the solution?
Which of the following is the correct value of the molar volume of an ideal gas at standard temperature and pressure (STP)?
Which of the following is the correct hybridization of the central atom in \( \text{CO}_2 \)?
What is the pH of a 0.01 M solution of hydrochloric acid (HCl)?
Which of the following represents the correct IUPAC name for \( \text{CH}_3\text{CH}_2\text{CH}_2\text{OH} \)?
Which of the following compounds is the most soluble in water?
What is the value of the ionization constant \( K_a \) for acetic acid (\( \text{CH}_3\text{COOH} \)) if the concentration of acetic acid is 0.1 M and the concentration of \( \text{H}^+ \) ions at equilibrium is 1.0 x \( 10^{-3} \) M?
Which of the following is the strongest acid in aqueous solution?
What is the oxidation state of chlorine in \( \text{Cl}_2 \text{O}_7 \)?
Which of the following gases is responsible for the greenhouse effect?
Which of the following represents the correct IUPAC name for \( \text{CH}_3\text{CH}_2\text{OH} \)?
What is the mass of 0.5 moles of water (H$_2$O)?