Write two properties of water which are due to hydrogen bonding.

Write two properties of a Rhombus?

State two properties of e.m wave.

Write two merits of median.

Write two properties of covalent compounds.

Write any 3 properties of cathode rays?

Write two terms which are like 21

What are the two properties of carbon which lead to the huge number of carbon compounds we see around us?

Write two demerits of mode.