Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Organic Chemistry
Samples of benzaldehyde and acetaldehyde can be distinguished by using
1
2,4 Dinitrophenylhydrazine
2
Tollen's reagent
3
Mixture of Fehling solution A + B
4
More than one of the above
5
None of the above