Match List-I with List-II :
List-I (Reaction) |
List-II (Product formed) |
||
---|---|---|---|
(a) | Gabriel synthesis | (i) | Benzaldehyde |
(b) | Kolbe synthesis | (ii) | Ethers |
(c) | Williamson synthesis | (iii) | Primary amines |
(d) | Etard reaction | (iv) | Salicylic acid |
Choose the correct answer from the options given below :
If first ionization enthalpies of elements X and Y are 419 kJ mol$$-$$1 and 590 kJ mol$$-$$1, respectively and second ionization enthalpies of X and Y are 3069 kJ mol$$-$$1 and 1145 kJ mol$$-$$1, respectively. Then correct statement is :
The incorrect statement about denaturation of proteins is :
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : The metal carbon bond in metal carbonyls possesses both $$\sigma$$ and $$\pi$$ character.
Reason (R) : The ligand to metal bond is a $$\pi$$ bond and metal to ligand bond is a $$\sigma$$ bond.
In the light of the above statements, choose the most appropriate answer from the options given below.