In a classroom discussion about order and moleculrity of a reaction,Ramu argued that ''there are reactions which appear to be of higher order but actually follows first order kinetics''How far is his statement true? Give your opinion in this regard. Justify your answer using suitable example.

In a class room discussion about order and molecularity of a chemical reaction, Ramu argued that “there are reactions which appear to be of higher order but actually follow first order kinetics.List out any three Important differences between order and molecularity.

After a discussion about the structures of hydrides of group-15 elements, .Neethu wrote the order of bond angles as NH_3ltPH_3ltAsH_3 . Justify ‘your answer:

Diborane is an important hydride of Boron a. During a class room discussion, a student argues that there is a covalent bond between boron atoms in diborane. What is your opinion. Give justification. b. Boron halides can act as Lewis acids. Give reason. c. Arrange the following Lewis acids in the increasing order of acidic strength. Substantiate your answer? 'BF_3 BCl_3, BBr_3'

Which of the following statements is incorrect about order of a reaction?

After a discussion about the structures of hydrides of group-15 elements, .Neethu wrote the order of bond angles as NH_3ltPH_3ltAsH_3 . Also arrange the above hydrides in the increasing order of their thermal stability. Justify your answer.

Arrange the following in the decreasing order (most important first) of their important, for the welfare of human society. Give reasons for your answer,Biogas, citric acid, Penicillin and curd.

The reaction A rarr X is a first order reaction which takes place in a vessel with initial concentration of A as 10 M. The rate constant for this reaction is 4.16 h^(-1) . In the presence of a catalyst, the reaction A rarr Y follows second-order kinetics and the rate constant is 0.2 min^(-1) M^(-1) . What should be the initial concentration of A in the presence of catalyst so that the value of t_(1//2) for both the reactions is the same?

Four statements about benzene molecule are given below. Of these which is the correct statement justify your answers. i. Because of unsaturation benzene easily undergoes addition reaction. ii, There are two types of C-C bonds in benzene molecule. iii. There is a cyclic delocalisation of 'pi' electrons in benzene iv. Di substitution of benzene group gives two isomeric substances.