11. Read The following Sentences carefully and choose The Incorrect one is *
(a) suberin acts as a cement and hardens cell wall.
(b) The cell walls of parenchyma are thin and stores food.
(c) Lignin makes the cell wall porous..
(d) The high tensile strength means that it does not break easily on stretching.
Answers
Answered by
1
Answer:
Correct option is
C
Sulphide ore is concentrated by calcination method
Sulphide ore is concentrated by froth flotation method. Galena (PbS), zinc blende (ZnS) and copper pyrites (CuFeS
2
) are concentrated by this method.
Similar questions