Chemistry Question Bank

Aluminium vessels should not be washed with materials containing washing soda since :

Which one is the wrong statement ?

Alumina is:

Thermite is a mixture of iron oxide and

Which of the following is correct?

Reactivity of borazole is higher than that of benzene because:

Which of the following is a false statement ?

The power of halides of boron to act as Lewis acids decreases in the order:

The main factor responsible for weak acidic nature of B—F bonds in BF3 is:

BCl3 does not exist as a dimer but BH3 exists as B2H6 because

Which one of the following is the correct statement ?

The hardest compound of boron is:

Boron cannot form which one of the following anions? (a) BF- (b) BH-

NaBH4 + I2 ® X + Y + Z BF3 + NaH 450 K ¾¾¾® X + P BF3 + LiAlH4 ® X + Q + R X, Y, Z, P, Q and R in the reactions are X Y Z P Q R (a) Na4B4O7 NaI HI HF LiF AlF3 (b) B2H6 NaI H2 NaF LiF AlF3 (c) B2H6 BH3 NaI B3N3H6 Al2F…

Boron nitride can be represented by the given structure. The structure of BN is similar to

The bonds present in borazole are:

Which of the following compounds is known as inor- ganic benzene?

Borazole, B3N3H6 is related to benzene as:

In B2H6:

The structure of diborane (B2H6) contains :

In diborane, the two H – B – H angles are nearly :

The type of hybridization of boron in diborane is

In diborane,

On hydroloysis, diborane produces

Boric acid has a polymeric layer structure in which planar BO3 units are joined by