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Complete the statements in COLUMN A with the options in COLUMN B. Write only A or B next to the question numbers (1.1.1 to 1.1.7) in the ANSWER BOOK, for example 1.1.8 B.

Geography

ScanSolve AI Answer

Step-by-step solution

3 steps
  1. Test with acidified K2Cr2O7K_2Cr_2O_7 (orange solution), heated.

    Primary alcohol (Column A):
    Orange solution turns green (Cr2O72−→Cr3+Cr_2O_7^{2-} \to Cr^{3+}).

    Secondary alcohol (Column B):
    Orange solution turns green (Cr2O72−→Cr3+Cr_2O_7^{2-} \to Cr^{3+}).

    Tertiary alcohol (Column C):
    No colour change (remains orange).

  2. Test with Lucas reagent (ZnCl2ZnCl_2 + conc.

    HClHCl), at room temperature.

    Primary alcohol (Column A):
    No reaction, solution remains clear.

    Secondary alcohol (Column B):
    White turbidity/ppt. appears after 5–10 min.

    Tertiary alcohol (Column C):
    White turbidity/ppt. appears immediately.

  3. Iodoform test (I2I_2 + NaOHNaOH).

    Primary alcohol (Column A, e.g. CH3CH2OHCH_3CH_2OH):
    Yellow ppt. of iodoform + smell of iodoform.

    Secondary alcohol (Column B, e.g. CH3CH(OH)CH3CH_3CH(OH)CH_3):
    Yellow ppt. of iodoform + smell of iodoform.

    Tertiary alcohol (Column C, e.g. (CH3)3COH(CH_3)_3COH):
    No yellow ppt./no reaction.

    Column D: Colour change to green (test 1), no turbidity (test 2), no iodoform (test 3).
    Primary alcohol.

    Column E: Colour change to green (test 1), turbidity after delay (test 2), iodoform (test 3).
    Secondary alcohol.

    Column F: No colour change (test 1), immediate turbidity (test 2), no iodoform (test 3).
    Tertiary alcohol.

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