On moist litmus paper State the cause of refraction of light ? (b) State Snell's law!
Name the extensively coiled structure of alimentary canal ?
Or
List the role of muscles of stomach wall.
e necessary conditions for autotrophic nutrition and name the by product? mention the
Or
le spherical mirror used as
Shaving m. ror
Reflector in search -lights
the power of concave lens of focal length 25em ?
P
Il happen if-
Peristaltic movements donot occur all along the oesophagus
Our mouth
Name dhe
Write two observations when lead nitrate is heated in a test tube ? (ii)
OP