Which of the following substances have abnormally high boiling points and why?
` H_2 S ,H_2 O , HF ,HI ,CH_4, C_2 H_5 OH .`

Which of the following will have higher boiling point and why? CH_(3)NH_(2) or CH_(3)OH

Arrange the following in the decreasing order of boiling points : (i) (1) C_3 H_8 (2) C_2 H_5 OH (3) (CH_3)_2 O (4) CH_2 OH CH_2 OH

Which out of the following has the highest boiling point ? (i) C_(2)H_(5)OH " "(ii) C_(2)H_(5)Br" "(iii) CH_(3)OH (iv) C_(3)H_(6)" " (v) CH_(3)OCH_(3).

Arrange the following compounds in the increasing order of their boiling points: CH_(3)CH_(2)CH_(2)CHO, CH_(3)CH_(2)CH_(2)CH_(2)OH, H_(5)C_(2)-O-C_(2)H_(5),CH_(3)CH_(2)CH_(2)CH_(3)

Explain the formation of following molecules : PCl_3 ,CH_4 ,H_2 O , PH_3 , OF_2 , C_2 H_6

(a) Write the structures of A and B in the following reactions : (i) CH_(3)COCl overset(H_2, Pd-BaSO_(4))(to)A overset(H_(2)N-OH)(to)B (ii) CH_(3)MgBr overset(1.CO_(2))underset(2.H_(3)O^+)(to)A overset(PCl_(5))(to)B (b) Distinguish between : (i) C_(6)H_(5)-COCH_(3) " and "C_(6)H_(5)-CHO (ii) CH_(3)COOH " and " HCOOH (c) Arrange the following in the increasing order of their boiling points : (i) CH_(3)CHO, CH_(3)COOH, CH_(3)CH_(2)OH

If the boiling point of H2O is 373 K, the boiling point of H2S will be :

Boiling point of water is 373k then the boiling point of H_2S is

Explain, why water has high boiling and melting points as compared to H_(2)S .

Explain why the molecularity and order of the following reaction are different? CH_3 COOC_2 H_5 +H_2 O to CH_3 COOH +C_2 H_5 OH