Keyword Analysis & Research: when was chemical warfare invented

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was chemical warfare invented	0.86	0.6	6797	51	34
when	0.82	0.5	4596	10	4
was	0.85	0.8	7986	31	3
chemical	0.1	0.3	1852	64	8
warfare	1.12	0.2	2638	96	7
invented	1.88	0.2	8770	75	8

Keyword	CPC	PCC	Volume	Score
when was chemical warfare invented	1.45	0.1	7056	3