NEET Practice Questions - Chemistry - The p-Block Elements (XI)

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  • Subject:

    Chemistry

  • Chapter:

    The p-Block Elements (XI)


Which of the following compound is weakest Lewis acid ?

(1) BF3

(2) BCl3

(3) BBr3

(4) BI3


Which does not show inert pair effect

(1) Al

(2) Sn

(3) Pb

(4) Thallium


Pick the correct statement :

(1) Borax is white crystalline solid containing [B4O5(OH)4]2- units

(2) Aqueous solution of borax is acidic in nature.

(3) Cobalt gives green colour in borax bead test.

(4) All are incorrect.


Mark the oxide which is amphoteric in character

(1) CO2

(2) CO

(3) SnO2

(4) CaO


In B2H6 

(1) there is direct boron-boron bond

(2) the structure is similar to that of C2H6

(3) the boron atoms are linked through hydrogen bridges

(4) all the atoms are in one plane


H3BO3 is

(1) monobasic and weak Lewis acid

(2) monobasic and weak bronsted acid

(3) monobasic and strong Lewis acid

(4) tribasic and weak Bronsted acid


From the B2H6 all the following can be prepared except:

(1) H3BO3

(2) [BH2(NH3)2]+ [BH4]-

(3) B2(CH3)6

(4) NaBH4


Which of the following shows correct Lewis acidic strength order of trihalides of boron ?

(1) BCl3 > BBr3 > BF3 > BI3

(2) BF3 < BBr3 < BCl3 < BI3

(3) BF3 < BCl3 < BBr3 < BI3

(4) BF3 >BCl3 > BBr3 > BI3


The correct order of ease of hydrolysis is 

(1) CCl4 < SiCl4 < PCl5 < AlCl3

(2) AlCl3 < CCl4 < PCl5 < SiCl4

(3) CCl4 < AlCl3 < PCl5 < SiCl4

(4) CCl4 < AlCl3 < SiCl4 < PCl5


The number of carbon atoms per unit cell of diamond unit cell is:-
(a) 4
(b) 8
(c) 6
(d) 1

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