Vicinal dihalide (C2H4Br2) on heating with excess alc.KOH and Zinc dust gives ’y’ and ‘z’ respectively. Both ‘y’ and ’z’ on oxidation with Bayer’s regent gives A and B.A and B respectively are
Assertion (A) : K, Rb and Cs form superoxides.Reason (R) ; The stability of the superoxides increase from 'K' to 'Cs' dueto decrease in lattice energy. The correct answer is
A catalyst increases the rate of reaction because it :
One Faraday of current was passed through the electric cells placed in series containing fused electrolytes with Ag+2,Ni2+,Cr3+ ions. The amount of Ag(at.wt=108), Ni(at.wt=59) and Cr(at.wt=52) deposited will be
Which one of the following pairs of reactants does not form oxygen when theyreact with each other
Which one of the following statements is correct
Assertion (A) : A catalyst increases the rate of a reaction.Reason (R) : In presence of a catalyst, the activation energy of the reaction increases. The correct answer is
Assertion (A) : Equal moles of different substances contain same number of constituent particles.Reason (R) : Equal weights of different substances contain the same number of constituent particles.The correct answer is
which of the following is not correcr?
Which of the following is not correct
CH2=CH2+HCl→CH3CH2Cl is an example for
Which of the following statements is NOT correct?