List of top Chemistry Questions

Which of the following metals is refined by vapour phase refining in Mond process?
Propane nitrile on reaction with ethyl magnesium iodide in the presence of dry ether gives complex. This imine complex on acid hydrolysis forms
Which of the following reactions proves the chlorinating property of phosphorus pentachloride?
Which among the following carbocation is most reactive?
An element crystallizes in a bcc lattice with cell edge of 500 pm. The density of the element is 7.5 g/cm\(^3\). How many atoms are present in 300 g of metal?
Which among the following is used as an oxidizing agent to bleach wood pulp into white paper?
Which of the following actinoids exhibits only +3 oxidation state?
Identify the process of refining to obtain pig tin.
If the entropy of a solid is greater than zero, at \( T = 0 \), it is called
A first order reaction has a rate constant 0.00813 min\(^{-1}\). How long will it take for 60% completion?
60 g of CH₃COOH dissolved in 1 dm³ solvent. What is molality of solution? (density = 1.25 g/cm³)
A solution of CuSO₄ is electrolyzed using a current of 1.5 amperes for 10 minutes. What mass of Cu is deposited at the cathode? (At. mass of Cu = 63.7)
Which of the following elements belongs to the first inner transition series?
Equilibrium constant for a reaction is 20. What is the value of \( \Delta G \) at 300 K? (\( R = 8 \times 10^{-3} \, \text{kJ mol}^{-1} \text{K}^{-1} \))
Which of the following is a multimolecular colloid?
What is the osmotic pressure of a semi-molar solution at 27°C? (\( R = 0.0821 \, \text{atm L mol}^{-1} \text{K}^{-1} \))
What is the IUPAC name of hydroquinone?
Which among the following type of linkages is present in cellulose?
A solution has an osmotic pressure of \( x \) kPa at 300K having 1 mole of solute in \( 10^{-5} \, \text{m}^3 \) of solution. If its osmotic pressure is reduced to \( \frac{1}{10} \) of its initial value, what is the new volume of solution?
Identify the catalyst X used in the following reaction:
CH\(_3\)CH\(_2\)Br + 2[H] \(\xrightarrow{X}\) CH\(_3\)CH\(_3\) + HBr
Which of the following is NOT present in baking powder?
Which of the following salts contain interstitial water molecules in it?
What type of intermolecular force is present between magnesium chloride and water?
What is the oxidation number of As in H\(_3\)AsO\(_3\)?
What will be the concentration of NaCl solution, if the molar conductivity and conductivity of NaCl solution are 124.3 \(\Omega^{-1}\)cm\(^2\)mol\(^{-1}\) and 1.243 × 10\(^-4\) \(\Omega^{-1}\)cm\(^1\) respectively?