Practice free Chemistry NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Oxidation of oxalic acid by acidified $ KMnO_4 $ is an example of autocatalysis. It is due to which of the following ?
$ Mn^{2+} $
What will be the order of the reaction if doubling the concentration of a reactant increases the rate by a factor of 4 and trebling the concentration of the reactant by a factor of 9 ?
2 $ 2 ^ n = 4 3^n = 9 $ $ \therefore n = 2 $
If the half time for a particular reaction is found to be constant and independent of the initial concentration of the reactants then reaction is of ...
1
The rate of reaction $ A + B + C \rightarrow Products $ is given by $ r = K[A][B]^o[C]$ . If A is taken in large excess, the order of the reaction would be
1
Rate of chemical reaction can be kept constant...
none of the above
The one which is unimolecular reaction is
$ N_2 O_5 \rightarrow N_2 O_4 + { 1 \over 2} O_2 $
The rate of reaction for $Cl_3 C CHO + NO \rightarrow CHCl_3 + NO + CO $ is given by equation, $ rate = K[Cl_3 C CHO][NO] $ . If concentration is expressed in $ mole litre^{-1} $ , the unit of K are
$ litre mole^{-1} sec ^ {-1} $
For a reaction $ 2A + B \rightarrow Products $ , the active mass of B is kept constant and that of A is doubled. The rate of reaction will then
increase 4 times
The conversion of $ A \rightarrow B $ follows second order kinetics. Doubling the concentration of A will increase the rate of formation B by a factor of
$ 4 rate = K [A] ^2 $ $ \therefore rate = K [2A] ^2 = 4.K [A]^ 2 $
Ethyl acetate is hydrolysed in alkaline medium, its order of a reaction and molecularity are respectively
$ 2 , 2 CH_3 COOC_2H_5 + NaOH \rightarrow CH_3 COONa + C_2 H_5 OH $
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every Chemistry question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.