Question : Which of the following forces explain the boiling point of aldehydes and ketones?

(a) Hydrogen bonding        (b) van der Waal’s forces
(c) Dipole-dipole attraction (d) None of these

Answer : C

Question : Which is highly soluble in water?

(a) Methanal   (b) Propanal
(c) Propanone (d) Butanone

Answer : A

Question : Which of the following is not linear polymer ?

(a) Bakelite  (b) Polyester
(c) Cellulose (d) High density polyethene

Answer : A

Question : A polymer is formed when simple chemical units

(a) combine to form long chains
(b) combine to form helical chains
(c) break up
(d) become round

Answer : A 

Question : The total number of electrons around the nitrogen atom in amines are

(a) 8 (b) 7
(c) 4 (d) 3

Answer : A

Question : Amines play an important role in the survival of life. Naturally they are found in

(a) proteins  (b) vitamins
(c) alkaloids (d) All of these

Answer : D

Question : Among the following which one can have a meso form?

(a) CH₃CH(OH)CH(Cl)C₂H₅
(b) CH₃CH(OH)CH(OH)CH₃
(c) C₂H₅CH(OH)CH(OH)CH₃
(d) HOCH₂CH(Cl)CH₃

Answer : B 

Question : Which of the following compounds has the highest boiling point?

Question : Malachite is an ore of 

(a) Silver         (b) Mercury
(c) Magnesium (d) Copper

Answer : D

Question : The chief ore of Hg is

(a) Pyrolusite (b) Bauxite
(c) Galena      (d) Cinnabar

Answer : D