MCQ
Which of the Phosphorus oxoacid can create silver mirror from $AgNO _3$ solution ?
- A$\left( HPO _3\right)_{ n }$
- ✓$H _4 P _2 O _5$
- C$H _4 P _2 O _6$
- D$H _4 P _2 O _7$

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Statement $I$ : Acidity of $\alpha$-hydrogens of aldehydes and ketones is responsible for Aldol reaction.
Statement $II$ : Reaction between benzaldehyde and ethanal will $NOT$ give Cross - Aldol product. In the light of above statements, choose the most appropriate answer from the options given below.
$(I)$ $1\, M$ glucose $(aq.)$
$(II)$ $1\, M$ sodium chloride $(aq.)$
$(III)$ $1\, M$ acetic acid in benzene
$(IV)$ $1\, M$ ammonium phosphate $(aq.)$