List of top Chemistry Questions asked in KEAM

2-Bromopropane reacts with Mg in dry ether to give a product which on treatment with HCHO forms an addition product. The addition product on hydrolysis forms
The compound with the lowest pKa value is
Grignard reagent is prepared by the action of
Which of the following organic halogen compound has high reactivity towards \(S_N1\) mechanism?
Eclipsed and staggered forms of n-butane are
When 0.25 g of an organic compound is completely oxidised with excess oxygen, 0.22 g of \(CO_{2}\) is produced. What is the percentage of carbon in the compound?
The most acidic hydrogen is present in
When ethene is treated with \(H_{2}\) in the presence of a catalyst, ethane is formed. This reaction is an example of.
Which of the following is a didentate ligand?
Which of the following pair of lanthanide elements have the same atomic radii?
When \(KMnO_{4}\) is heated to 513 K the products formed are \(K_{2}MnO_{4}\), \(O_{2}\) and.
The rate constant of a reaction at 500 K is 0.02 and it increased to 0.07 at 700 K. The \(E_a\) value of the reaction is about [Given: \(R = 8.3 \, J\,K^{-1}\,mol^{-1}\) and \(\log(7/2) = 0.544\)].
The rate equation for the reaction \(xA + yB \rightarrow mC + nD\) is rate \(= k[A]^{1/2}[B]^{3/2}\). What is the total order of the reaction?
Which of the following pair of transition metal ions are diamagnetic?
The hybridisation involved in nickel of the complex ion \([Ni(CN)_4]^{2-}\) is.
Molal boiling point elevation is the least for the solvent
The mass of Al deposited when 2 ampere current is passed through a solution of $Al_2(SO_4)_3$ for 1 hour is (F = 96500 C)
The decomposition of \(H_{2}O_{2}\) in the presence of \(I^{-}\) in alkaline medium has the rate law.
The standard EMF of the cell \(Mg(s)\,|\,Mg^{2+}(0.01\,M)\,||\,Ag^{+}(0.0001\,M)\,|\,Ag(s)\) is 3.17 V at \(25^{\circ}C\). The EMF of the cell at the same temperature is (2.303RT/F at \(25^{\circ}C\) is 0.06 V).
Hypertonic solution contains
Which of the following bond has the lowest mean bond enthalpy?
For the homogeneous equilibrium \(N_{2(g)} + 3H_{2(g)} \rightleftharpoons 2NH_{3(g)}\), the equilibrium constants \(K_P\) and \(K_C\) are related as:
In a free expansion of a gas
The oxidation numbers of carbon and hydrogen in methane are respectively
Consider the equilibrium reaction, \(X(g) + Y(g) \rightleftharpoons W(g) + Z(g)\). The equilibrium constant \(K_C\) for the reaction is \(2.0 \times 10^2\) at 300 K and it decreases with increase in temperature. Which of the following is true for the reaction?