Listen the following conversation. Student A: `[Ni(CO)_4]` Is diamagnetic since it undergoes `sp^3` hybridisation. Student B: `[Ni(Cl)_4]^(2-)` is also diamagnetic as it also undergoes `sp^3` hybridisation. Do you agree with the above conversation? Justify your answer.

In the formation of methane, carbon undergoes sp^3 hybridisation. a)What do you mean by sp^3 hybridisation?

In which of the following compounds, B atoms are in sp^(2) and sp^(3) hybridisation states? (1) Borax (2) Diborane (3) Borazole (4) All

Which of the following complexes are not correctly matched with the hybridisation of their central metal ion? (i) [Ni(CO)_4], sp^3 (ii) [Ni(CN)_4]^(2-), sp^3 (iii) [CoF_6]^(3-) , d^2 sp^3 (iv) [Fe(CN)_6]^(3-), sp^3 d^2 Select the correct answer using the codes given below:

During a lab'work a student is given '1 ∘ , 2 ∘ and 3 ∘ aliphatic AMINES in three unlabelled test tubes. To. distinguisii the AMINES, student uses a mixture of sodiom nitrate and'dilute hydrochloric acid. a) Can the student distinguish the AMINES by us: ing the reagents? Justify'your answer. b) iIlustrate Hinsberg.test to distinguish the above AMINES. "

You are given conc. HCl and salts of some alkaline earth metals and directed to conduct flame test and to detect the cation present in each salt. (a) Can you detect all the cations which are given here by this method? [CaCl_2, MgSO_4, Ba(NO_3)_2, BeCl_2, SrCl_2] (b) Justify your answer. (c) What is the mechanism of this test?

Paragraph An organic compound A(C_(9)H_(6)O_(3)) does not react with aqueous solution of NaHCO_(3) as well as does not change the colour of litmus paper. Aon acid hydrolysis gives B(C_(9) H_(8)O_(4)) as major product whereas A on treatment with one equivalent of methanol in acidic medium gives C(C_(10)H_(10)O_(4)) as the major product (other minor isomer of C is also formed). B on heating with sodalime gives toluene. Answer the following questions based on the above information. The structure of A satisfying above conditions is

Paragraph An organic compound A(C_(9)H_(6)O_(3)) does not react with aqueous solution of NaHCO_(3) as well as does not change the colour of litmus paper. Aon acid hydrolysis gives B(C_(9) H_(8)O_(4)) as major product whereas A on treatment with one equivalent of methanol in acidic medium gives C(C_(10)H_(10)O_(4)) as the major product (other minor isomer of C is also formed). B on heating with sodalime gives toluene. Answer the following questions based on the above information. The most likely structure of B is