Loading question...
You are in free guest mode. Timed Practice Revision List Attempt History Progress Tracking Create a free account to unlock these tools
Prev Next
Practice Reading: Reading Fill in the Blanks ID: #30449 Gunpowder
Instructions
* Drag the correct answer into all target fields
Gunpowder,  also  referred  to  as  'black  powder',  was  the  only    chemical  explosive  until  the  mid-nineteenth  century.  It    potassium  nitrate,  or  'saltpeter',  which  is  an  oxidiser,  and  a  combination  of  charcoal  and  sulphur  serves  as  fuel.  There  is    consensus  that  gunpowder  was  initially  invented  in  China  as  early  as  the  ninth  century.  This    to  its  use  in  fireworks  and  in  gunpowder  weapons.

caused known academic unique led includes contains

Result:

With a free account: Retry and compare every attempt.
How difficult was this question?
Others found: 100% Easy · 0% Medium · 0% Hard
Saving...