0.092 g of a compound with the molecular formula C₃H₈O₃ reaction with an excess of CH₃MgI gives 67.00 mL of methane at STP. The number of active hydrogen atoms present in a molecule of the compound is:
(1) one

(2) two

(3) three

(4) four

 

Optically active 2-octanol rapidly loses its optical activity when exposed to :

Which of the following compound is hemiacetal ?

(a) 

(d) All of these

Arrange their stabilities of given gem-diols in decreasing order.

(a) I > II > III

(b) III > II > I

(c) I > III > II

(d) III > I > II 

What is the product obtained by heating the following allylic ether of phenol?

An acid among the following acids raises the acidity of phenol is:

1. Dil. H₂SO₄       

2. Dil. HCl           

3. Conc. H₂SO₄           

4. Conc. CH₃COOH

; Compounds (X) and (Y) can be differentiated by:
(1) ${\mathrm{H}}_3{\mathrm{O}}^{\oplus }$, NaOI

(2) ${\mathrm{H}}_3{\mathrm{O}}^{\oplus }$, then Fehling test

(3) ${\mathrm{H}}_3{\mathrm{O}}^{\oplus }$, then Na

(4) Both (b) and (c)

Test to differentiate between (CH₃OH) and (Ph-OH) is/are:

(1) Litmus test

(2) FeCl₃

(3) Br₂/H₂O

(4) All of these

Methanol and ethanol can be distinguished by the following:

1. by reaction with metallic sodium

2. by reaction with caustic soda

3. by heating with iodine and washing soda

4. by heating with zinc and inorganic mineral acid