HARDMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryPractical Organic ChemistryAchiever Section
Column I Column II (pair of compounds) (identification test) (a) and (p) Tollen’s reagent test (b) OH and OH (q) Br₂ + H₂O test (c) O || H C OH and (r) Lucas test O || CH C OH (d) and (s) Iodoform test (t) Ammonical Cu₂Cl₂ test
A.(a-rs) (b-q) (c-p) (d-pt)
B.(a-q) (b-rs) (c-p) (d-pt)✓ Correct
C.(a-q) (b-p) (c-rs) (d-pt)
D.(a-q) (b-pt) (c-p) (d-rs)
Explanation
Bromine water test is used to dentify the alkene or alkane functional gp. Present in the compound. These are distinguished by iodoform & lucas Test. Iodoform test is used to check the Presence of Carbonyl compound with structure 3 ||O R C CH or alcohols with 3 |OH R CH CH . Lucas test is used to distiniguish 1°, 2° & 3° alcohol on the basic of turbidity. (c) 3 || || O O H C OH &CH C OH Formic acid gives tollen's test where as acetic acid do not give tollen's test. (d) Here Tollen's test is also used to test for terminal alkynes. Ammoniacal Cu₂Cl₂ test: - Copper Salt ppt Red
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