All carbon atoms are sp²-hybridised in

• 1, 3-butadiene

• CH₂=C=CH₂

• cyclohexane

• 2-butene

Among the following species, identify the pair having same bond order CN^-, O${}_2^{-}$, NO⁺, CN⁺

• CN^- and O${}_2^{-}$

• O${}_2^{-}$ and NO⁺

• CN^- and NO⁺

• CN^- and CN⁺

The shape of XeF₄ molecule and hybridisation of xenon in it are

• tetrahedral and sp³

• square planar and dsp²

• square planar and sp³d²

• octahedral and sp³d²

Match List-I and List-II and choose the correct matching codes.

List - I	List - II
A. [Ni(CN)4]2-	1. Ti4+
B. CHlorophyll	2. sp3; paramagentic
C. Ziegler- Natta catalyst	3. non-planar
D. [NiCl4]2-	4. Mg2+
E. Deoxyhaemoglobin	5. Planar 6. dsp2; diamagentic

• A - 6; B - 4; C - 1; D - 2; E - 3

• A - 2; B - 4; C - 1; D - 6; E - 3

• A - 2; B - 4; C - 1; D - 6; E - 5

• A - 6; B - 4; C - 1; D - 2; E - 5

In which of the following species, all the three types of hybrid carbons are present ?

• CH₂=C=CH₂

• CH₃-CH=CH-CH${}_2^{+}$

• CH₃-C≡C-CH${}_2^{+}$

• CH₃-CH=CH-CH${}_2^{-}$

The incorrect statement/s among the following is/are

I. NCl₅, does not exist while PCl₅, does.

II. Lead prefers to form tetravalent compounds.

III. The three C-O bonds are not equal in the carbonate ion.

IV. Both O⁺₂ and NO are paramagentic

• I, III and IV

• I and IV

• II and III

• I and III

Which of the following is paramagnetic with bond order 0.5?

• F₂

• H${}_2^{+}$

• N₂

• O${}_2^{-}$

Match List-I with List-II and choose the correct matching codes from the choices given.

List - I	List - II
A. PCl5	1. Linear
B. IF7	2. Pyramidal
C. H3O+	3. Trigonal bipyramidal
D. ClO2	4. Tetrahedral
E. NH${}_4^{+}$	5. Pentagonal bipyramidal 6. Angular

• A - 3; B - 5; C - 2; D - 1; E - 4

• A - 3; B - 5; C - 4; D - 1; E - 2

• A - 3; B - 5; C - 6; D - 1; E - 2

• A - 3; B - 5; C - 2; D - 6; E - 4

409.

Among the following, the pair in which the two species are not isostructural are

• IO${}_3^{-}$ and XeO₃

• PF${}_6^{-}$ and SF₆

• BH${}_4^{-}$ and NH${}_4^{+}$

• CO${}_3^{2-}$ and NO${}_2^{-}$

Which of the following ions has a magnetic moment of 5.93 BM ?

(At. no. V = 23; Cr = 24; Mn = 25; Fe = 26)

• Mn²⁺

• Fe²⁺

• Cr²⁺

• V³⁺