`BCl_(3)` does not exist as dimer but `BH_(3)` exist as dimer `(B_(2)H_(6))` because :-A. Chlorine is more electronegative than hydrogenB. There is `p_(pi)-p_(pi)` bonding in `BCl_(3)` but `BH_(3)` does not contain such bondingC. Large sized chlorine atoms do not fit between the small boron atoms whereas smalled sized hydrogen atoms get fitted between boron aotms.D. None of these

`BCl_(3)` does not exist as dimer but `BH_(3)` exist as dimer `(B_(2)H

1.	`BCl_(3)` does not exist as dimer but `BH_(3)` exist as dimer `(B_(2)H_(6))` because :-A. Chlorine is more electronegative than hydrogenB. There is `p_(pi)-p_(pi)` bonding in `BCl_(3)` but `BH_(3)` does not contain such bondingC. Large sized chlorine atoms do not fit between the small boron atoms whereas smalled sized hydrogen atoms get fitted between boron aotms.D. None of these
Answer» Correct Answer - C

vii. The stability of dihalides of ` Si, Ge , Sn` and Pb increases steadily in the sequence :A. `GeX_(2) lt SiX_(2) lt SnX_(2) lt PbX_(2)`B. `SiX_(2) lt GeX_(2) lt PbX_(2) lt SnX_(2)`C. `SiX_(2) lt GeX_(2) lt SnX_(2) lt PbX_(2)`D. `PbX_(2) lt SnX_(2) lt GeX_(2) lt SiX_(2)`
When `H_2S` is passed through acidified `KMNO_4`, we getA. `K_(2)SO_(4)`B. `MnO_(2)`C. `KHSO_(3)`D. Sulphur
The`3ClO^(-)(aq.)to ClO_(3)^(-)(aq.)+2Cl^(-)(aq.)` is an example ofA. oxidation reactionB. disproportionationC. reduction reactionD. decomposition
The reaction: `ClO_(3)^(-) +I_(2) to IO_(3)^(-)+Cl_(2)`A. is possibleB. depends upon the state of productsC. is not possibleD. depends upon the temperature
In the reaction: `3Br_(2)+6OH^(Theta)rarr 5Br^(Theta)+BrO_(3)^(Theta)+3H_(2)O,Br_(2)` isA. is reducedB. is oxidizedC. disproportionatesD. disintegrate
`NaClO_(3)` is obtained by reacting `Cl_(2)` andA. cold dil. NaOHB. hot conc. NaOHC. cold `Na_(2)O_(2)`D. hot `Na_(2)O_(2)`
Which of the following is acidic oxides ?A. `HClSO_(4)`B. `MgO`C. `Al_(2)O_(3)`D. `CaO`
Which of the following is more acidic oxyacid ?A. `HClO_(4)`B. `HClO`C. `HClO_(3)`D. `HClO_(2)`
Oxygen orm acidic oxide withA. CaB. NaC. SD. K
Of the following, the most acidic isA. `As_(2)O_(3)`B. `P_(2)O_(3)`C. `Sb_(2)O_(3)`D. `Bl_(2)O_(3)`