Test Preparation on Chemistry-Basic Concept Of Chemistry Session

Significant figures in ? are infinite it is an irrational number (22/7) there is an infinite digit in? = 3.1428571432479 (more than trillion digits in ?)

If zero at the left hand side of non zero digit it is not a significant figures as 0.004321 = 4 0.00231 = 3 786 = 3(s.f), 0.786 = 3 (s.f), 0.0786 = 3 (s.f)

a) 0.0005 = no any zero consider in significant number b) 0.0500 = only two zero consider in significant number c) 50.000 = all zero consider in significant number d) 0.0050 = only one zero consider in significant number

In the multiplication & division, significant figures are adjusted according to the least significant figure