The p-Block Elements Test

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Column I	Column II
$$(A)$$ Boron fibres	$$(i)$$ Heat resistant glasses
$$(B)$$ Borax	$$(ii)$$ Bulletproof vest
$$(C)$$ Aluminium	$$(iii)$$ Filler in automobile tyre
$$(D)$$ Carbon black	$$(iv)$$ Transport industry

	List-I (ppt)		List-II (colour)
(P)	$${ Ag }_{ 2 }Cr{ O }_{ 4 }$$	(1)	Yellow
(Q)	$${ Cu }_{ 2 }\left[ Fe{ \left( CN \right) }_{ 6 } \right] $$	(2)	White
(R)	$$Ba{ SO }_{ 4 }$$	(3)	Chocolate brown
(S)	$$Pb{ I }_{ 2 }$$	(4)	Scarlet Red

The p-Block Ele...

Question 1

$$CH_3\underset{\underset{\displaystyle OH}{|}}{C}H\underset{\underset{\displaystyle CH_3}{|}}{C}HCH_3$$

$$CH_3CH_2\overset{\overset{\displaystyle OH}{|}}{\underset{\underset{\displaystyle CH_3}{|}}{C}}CH_3$$

$$CH_3CH_2\underset{\underset{\displaystyle CH_3}{|}}{C}HCH_2OH$$

none of these

Question 2

Nitrogen has the ability to form $$p\pi -p\pi $$ bonds with itself

Bismuth forms metallic bonds in elemental state

Catenation tendency is higher in nitrogen when compared with other elements of the same group

Nitrogen has higher first ionization enthalpy when compared with other elements of the same group

Arsenic forms $$d\pi -d\pi $$ bonds with transition metals

Question 3

4 and 5

4 and 3

5 and 4

5 and 3

Question 4

$$B{ F }_{ 6 }^{ 3- }$$

$$B{ H }_{ 4 }^{ - }$$

$$B{ \left( OH \right) }_{ 4 }^{ - }$$

$$B{ O }_{ 2 }^{ - }$$

Question 5

$$(A)\rightarrow (i),(B)\rightarrow (ii),(C)\rightarrow (iii),(D)\rightarrow (iv)$$

$$(A)\rightarrow (ii),(B)\rightarrow (i),(C)\rightarrow (iv),(D)\rightarrow (iii)$$

$$(A)\rightarrow (ii),(B)\rightarrow (iii),(C)\rightarrow (i),(D)\rightarrow (iv)$$

$$(A)\rightarrow (iii),(B)\rightarrow (ii),(C)\rightarrow (i),(D)\rightarrow (iv)$$

Question 6

They are isoelectronic and isostructural.

They have same bond order for E-O bond, where E is the central atom.

The extent of $$\pi$$-bonding is in the order of $$CO_3^{2-} \, < \, NO_3^- \, < \, BO_3^{3-}$$

Bond angles are same in every cases.

Question 7

$$Si(OH)_4$$

$$SiOCI_2$$

$$SiO_2$$

$$H_2SiO_4$$

Question 8

$$P-4, Q-2, R-1, S-3$$

$$P-2, Q-3, R-4, S-1$$

$$P-4, Q-3, R-2, S-1$$

$$P-3, Q-4, R-1, S-2$$

Question 9

$$O^--\overset{O}{\overset{||}{S}}-O-H, \, O^--\overset{O}{\overset{||}{S}}-O-CH_3$$

$$O^--\overset{O}{\overset{||}{S}}-O-H, \,\, O^--\underset{O^-}{\underset{|}{\overset{O}{\overset{||}{S_{\bigoplus}}}}}-O-CH_3$$

$$O^--\overset{O}{\overset{||}{S}}-O-CH_3, \,\, O^\ominus-\underset{CH_3}{\underset{|}{\overset{O}{\overset{||}{S_{\bigoplus}}}}}-H$$

d$$O^--\underset{H}{\underset{|}{\overset{O}{\overset{||}{S_{\bigoplus}}}}}-O, \,\, O^--\underset{CH_3}{\underset{||}{\overset{O}{\overset{||}{S}}}}-O^-$$

Question 10

$$(Me)_2Si(OH)_2$$

$$(Me)_2Si=O$$

$$[-O-Me_2(Si-O-)]_n$$

$$Me_2Si(Cl)(OH)$$

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