Which of the following materials are used for preparing
blur-black ink?

1 Gallic acid

2 Tannic acid

3 Ferrous sulphate

4 All of these

Answer Posted / anand raj

1 gallic acid

Is This Answer Correct ?    1 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why we use nhexane inplace of hexane in mobilepase preparation

1973


Who invented telescope?

676


Write two characteristics of Science.

611


where is the indragandhi furnal in delhi, who is bulit in krishna sagar dam

1919


what the defference from anti virus and spyware and adware also? Please descript?

1907






What is voltage? ?? What type of of show voltage. ?? Practillay how's voltage?

1755


What is a nuclear triad?

615


How long can arihant stay underwater?

604


When a person sends a message to someone with the Internet, there are steps that happen to the recipient to receive the message. How does the recipient know that the message was not edited by someone else?

1111


we know in mathematics that a matrix is an arrangement (array) of different elements , memebers . Then, how does the movie "Matrix" relate with this concept. In movie "Matrix" we have seen that it shown a war between machines & humans. And we know to operate machines we need code like 0 1 & 1 0 . How ? explain ?

1610


List and explain two instances of Correlation Science with Life Situation

607


What are nebulae?

601


What is the work of a patent engineer? Does the experience in working as patent engineer helps in finding a job in a refinery?

5030


My friend has done the DMLT(Diploma in Medical Laboratory Technology)Now she wants to do further education.What should she do? Please Guide which would be best for her

9354


What are quasars?

591