.The number of alkynes which are not reduced to alkenes by Na/liquid \(NH_{3}\) is
HC-=CH,HC-=CCH_(3),*CH_(3)C-=CCH_(3)],[PhC-=CH,PhC-=CPh,C_(3)H_(7)C-=CH]

CH_(3)CH_(2)-C-H+CH_(3)-C=Choverset(Na,NH_(3)(l)rarr

The correct increasing order of acidity of the following alkynes is : (1) CH_(3) - C -= C - CH_(3) (2) CH_(3) - C -= CH (3) CH -= CH

{:(CH_(3)-C=C-CH_(3)),(" "|" "|),(" "H_(3)C" "CH_(3)):}

How many sigma and pi bonds are present in each of the following molecules? (a) CH_(3)-CH=CH_(2) (b) CH_(3)-C-=C-CH_(3) (c ) HC-=C CH=CHCH_(3)

Indicate the number of sigma -and pi -bonds in the following molecules: (i) CH_(3)-C-=C-H (ii) CH_(3)-CH=CH_(2) (iii) H_(2)C=C=CH_(2) (iv) CH_(3)-CH_(2)-CH_(3) (v) H_(2)C=C-CH-CH_(3) (vi) HC=C-CH=CHCH_(3) (vii) H_(2)C =CH-C-=N (viii) CH_(3)OH (ix) CH_(3)-C-=N (x) CH_(3)NO_(2) (xi) CH_(2)CI_(2) (xii) C_(6)H_(12) (Hexene)

The correct statement(s) about the compound H_(3)C(HO)HC-CH=CH-CH(OH)CH_(3) (X) is/are

{:(CH_(2)=C-CH_(2)CH_(3)),(" "|),(" "HC-CH_(3)),(" "|),(" "CH_(3)):}