BCl3 has higher stability than , because -
|1.||The +2 oxidation state of Tl is more stable than the +2 oxidation state of B|
|2.||The +2 oxidation state of B is more stable than the +2 oxidation state of Tl|
|3.||The +3 oxidation state of B is more stable than the +3 oxidation state of Tl|
|4.||The +3 oxidation state of Tl is more stable than the +3 oxidation state of B|
Boron trifluoride behaves as a Lewis acid because -
1. Boron trifluoride is electron-rich.
2. Boron trifluoride is electron-deficient.
3. Boron trifluoride is highly stable.
4. None of these.
The correct statement among the following regarding behavior of in water is -
|1.||BCI 3 readily undergoes hydrolysis while CCI 4 completely resists hydrolysis.|
|2.||CCI 4 readily undergoes hydrolysis while BCI 3 completely resists hydrolysis.|
|3.||Both BCI 3 and CCI 4 readily undergo hydrolysis.|
|4.||Neither BCI 3 nor CCI 4 undergo hydrolysis.|
Boric acid is a-
1. Protic acid.
2. Weak monobasic acid.
3. Lewis acid.
4. Both '2' and '3'
The effect of heating Boric acid at 370 K or above is -
1. Orthoboric acid changes to metaboric acid.
2. Metaboric acid changes to boric oxide.
3. Both '1' and '2'
4. Neither '1' nor '2'
The electron-deficient compound among the following is -
The hybridization of carbon in (a) (b) diamond (c) graphite is respectively-
1. , ,
2. , ,
3. , ,
4. , ,
The B–F bond lengths in (130 pm) and (143 pm) differ because of-
1. Presence of triple bond character in
2. Resonance in
3. Presence of a double bond character in
4. Presence of a double bond character in
B–Cl bond has a dipole moment. Still, the BCl3 molecule has zero dipole moment because:
|1.||The respective dipole-moments of the B–Cl bond add with each other|
|2.||The respective dipole-moments of the B–Cl bond cancel each other|
|3.||BCl3 is tetrahedral in shape|
|4.||None of the above|
CO is a poisonous gas because :
|1.||It forms a complex with hemoglobin.|
|2.||The CO–Hb complex is about 300 times more stable than the O 2 –Hb complex.|
|3.||It can kill a person through suffocation on not receiving oxygen.|
|4.||All of the above.|