CHEMISTRY CH13 Chemical Bonding — Science STD 9 — Question

Name any three edible mushrooms.

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

Maricuiture (or) Marine water aquaculture

Conduction

Ionic compounds have low melting and boiling point.

What is the measure of the work done on the unit positive charge to bring it to that point against all electrical forces?

Radiation

Rectifier

What are intercalary meristems? How do they differ from other meristems?

Which of the following are pure substances? Ice, Milk, Iron, Hydrochloric acid, Mercury, Brick and Water.