Assertion: Boron always forms a covalent bond.
Reason: Boron has a diagonal relationship with silicon.
1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but Reason is false.
4. Both Assertion and Reason are false statements.
Assertion: B-X bond length in is shorter than the expected value.
Reason: back bonding occurs between B and X.
1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but Reason is false.
4. Both Assertion and Reason are false statements.
Assertion: The total number of coordinate bonds and covalent bonds in borazine is 3 and 12 respectively.
Reason: Its structure is similar to benzene.
1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but Reason is false.
4. Both Assertion and Reason are false statements.
White fumes appear around the bottle of anhydrous AlCl3. This is due to -
1. Formation of Al(OH)3
2. Dimerisation of AlCl3
3. Hydrolysis of AlCl3 gives HCl gas
4. Adsorption of moisture
is -
1. A Monobasic acid and a weak Lewis acid.
2. A Monobasic and a weak Bronsted acid..
3. A Monobasic and a strong Lewis acid.
4. A Tribasic and a weak Bronsted acid.
The most characteristic oxidation state for lead and tin is, respectively,:
1. +4, +2
2. +2, +4
3. +4, +4
4. +2, +2
An anion present in the chain structure silicate is -
1.
2.
3.
4.
\(\mathrm{Al}_2 \mathrm{O}_3\) reacts with-
1. | Only water | 2. | Only acids |
3. | Only alkalis | 4. | Both acids and alkalis |
can't be prepared by -
1.
2.
3.
4.
Consider the following reaction
The correct statement among the following is -
1. (A) is
2. (C) is
3. (C) is
4. (B) is