Exercise 3

Question 11 :

The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is


A). chain isomerism
B). functional group isomerism
C). positional isomerism
D). metamerism
Answer : Option C

Question 12 :

The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?


A). 1/6
B). 1/3
C). 1/8
D). 1/4
Answer : Option C

Question 13 :

The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3


A). 4
B). 5
C). 2
D). zero
Answer : Option A

Question 14 :

The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in


A). 1.8 gram of H2O
B). 12 moles of KMnO4
C). 0.6N H2SO4
D). 4.6 gram of C2H5OH
Answer : Option B

Question 15 :

The National Chemical Laboratory is situated in


A). New Delhi
B). Bangalore
C). Pune
D). Patna
Answer : Option C