CHEMISTRY CH10 Matter Around Us — Science STD 9 — Question

Name the different species of protozoa plasmodium.

Differentiate the following.

Absorption and Assimilation

Pick out the odd one.

Complete the following triads by inserting the missing elements.a) Cl, ………., Ib) Li, ………, Kc) Ca, …………, Ba

Relate the names of the following scientists with the statements given below. (Mendeleev, Newlands, Dobereiner).a) Arranged elements into groups containing three elements each.b) Arranged elements in a group of seven with increasing atomic masses and eighth elements with similar properties kept below the first like eight note in an act of music.c) Arranged elements in the increasing order of atomic mass

A stone is dropped on the surface of water in a pond. Name the types of waves produced.

In which stage of mitosis the chromosomes align in an equatorial plate? How?

Name the adulterants used in (a) Tea leaves (b) Chilli powder.

Differentiate the following.

Exotic breed and Indigenous breed

An element has atomic number 12.a) Write the electric configuration.b)To which group and period do it belong.