BIOLOGY CH22 World of Microbes — Science STD 9 — Question

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

H ^{+}+ H _2 O \rightarrow \text { ? }

Name a device that prevents loss of energy (or gain) by conduction, convection and radiation.

Expand the following.

DPT- 

There are 5 periods and 17 groups in the modern periodic table.

What is LPG?

What is the difference between movement of flower in sunflower plant and closing of the leaves in the Mimosa pudica?

AIDS

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

Name the chronic diseases associated with respiratory system.