subject
Social Studies, 02.07.2021 17:10 dysany8876

Read the excerpt from "Tools of the Spymaster." James Jay's invisible ink did not become visible by heating. As he described it, his ink "would elude the generally known means of detection, and yet could be rendered visible by a suitable counterpart." Jay's invisible ink consisted of two chemicals. An agent used one chemical to write an invisible message. To read the message, the reader had to brush a second chemical on the paper; that chemical made the message visible. The two-bottle system, supplied by Jay, gave Washington the secure form of writing that he wanted.

Which statement best expresses the central idea of the excerpt?

James Jay was a spy for the Americans and had knowledge of chemistry.
James Jay’s system required two chemicals for writing and reading invisible ink messages.
James Jay believed secret messages that became visible because of heat were not secure.
James Jay’s invisible ink system allowed Washington to read secret messages.

ansver
Answers: 2

Another question on Social Studies

question
Social Studies, 22.06.2019 06:10
List 3 ways people were targeted by the nazis.
Answers: 1
question
Social Studies, 22.06.2019 16:00
Chen's research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?
Answers: 1
question
Social Studies, 22.06.2019 19:00
In the 1600s, the american colonies passed many laws that affected the rights and activities of specific groups of people. which of the following was one of these laws?slaves were defined as servants for apex
Answers: 1
question
Social Studies, 23.06.2019 00:30
Compare and contrast walden and "the experiences of the a.c." include the authors, their ideas, and reasons of their failures from a christian perspective.
Answers: 2
You know the right answer?
Read the excerpt from "Tools of the Spymaster." James Jay's invisible ink did not become visible by...
Questions
question
Mathematics, 19.05.2020 18:08
question
Mathematics, 19.05.2020 18:08
question
Mathematics, 19.05.2020 18:08
question
Mathematics, 19.05.2020 18:08