50 mL of 0.5 M oxalic acid is needed to neutralize 25 mL of sodium hydroxide solution. The amount of NaOH in 50 mL of the given sodium hydroxide solution is -

can not be prepared by -

In the following reaction, products A and B are –

The correct order for acid strength of compounds :

CH $$ \equiv $$ CH, CH₃–C $$ \equiv $$ CH and CH₂ = CH₂ is as follows