According to Avogadro Law equal volumes ofall gases at the same temperature and pressure should contain ---------- number of molecules .

According to Gay Lussac’s Law of Gaseous Volumes,

when gases combine or are produced in a chemical reaction they do so in  a ______ ratio  by volumes provided all gases are at same temperature and pressure.

Significant figures are

Precision and Accuracy refer to _______ of various measurements for the same quantity repeatedly  and agreement of a particular value to the ------- --------  of the result , respectively.

In scientific notation for numbers, any number can be represented in the form ,

N × 10ⁿ  where,

The kelvin scale is related to celsius scale  as :

SI units for Base Physical Quantities of length, mass and current are

Fill up the  blank  with  suitable word in the statement,

Physical properties are those properties which are measured or observed--------------- changing the identity or the composition of the substance .

Particles of compounds are

Which of the following statements about pure substances is correct ?