Class-XI

OPEN TEXT-

BASED ASSESSMENTO

T

B

A

1.

2. The Ambient Air 12

Take Care! 1

Themes:

Shiksha Kendra, 2, Community Centre, Preet Vihar, Delhi-110301, India

CENTRAL BOARD OF

SECONDARY EDUCATION

2015-16

Biology

Page

Shiksha Kendra, 2, Community Centre, Preet Vihar, Delhi-110301, IndiaTel: 011-22509256-59 Website: www.cbse.nic.in

CENTRAL BOARD OF SECONDARY EDUCATION