A. Electron efinity
B. Atomic radius
C. Periodicity of property
D. none of these

A. Brain
B. Spinal cord
C. both a & b
D. non of the above

A. Blackboard writing
B. Solving questions
C. Asking questions
D. All the above

A. Components
B. Pupilteacher
C. Supervisor
D. Headmaster

A. Clarity of thought
B. Dramatic Presentation
C. Speaking in a mild tone
D. Speaking without pause

A. To help students get through in the examination
B. To make students disciplined
C. To develop the abilities of students
D. To develop the social behaviours among students