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 / raj thakre
tannic acid
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
Explain any four values that can be developed through teaching Physical Science
When did the most luminous nova appear?
Which is the largest refractor telescope?
what are the advantages and disadvantages of rational knowledge?
The year in which magnetic observations were started in mumbai and thiruvananthapuram?
whate is the difference b/w aflatoxions&ocharatoxions
Which was the international geo - physical year?
Who discovered radio telescope?
Which is the most famous comet?
Names of some plants and trees that sleep during the day
The Purest form of water can be obtained from:- I) a deep tube well II) a running stream III) a hot water spring IV) a heavy shower of rain
In which year, physical laboratory in ahmedabad was founded?
What is length and weight of arihant?
Who commanded the challenger’s first flight?
When and where was the first experimental atomic explosion took place?