Science, asked by riduvarshinir4834, 10 months ago

Which of the following material is used to prepare blue-black ink ?
A. Gallic acid B. Tannic acid C. Ferrous sulphate D. All of these

Answers

Answered by kavyashaivya

0

Answer:

Ferrous sulphate is used to make blue black ink

Previous Question

Next Question

Similar questions

Math, 5 months ago

3) Draw a perpendicular bisector of seg PQ of length 7.5 cm...

Math, 5 months ago

Express 5mt 6dm into dm...

English, 5 months ago

rahul has to submit the report_____the end of this week (fill in the blanks with preposition)...

Political Science, 10 months ago

Which of the following statements is correct? A. The Council of Ministers are collectively responsible to the President of India B. The Council of Ministers are collectively responsible to the Parliament C. The Council of Ministers are collectively responsible to the Lok Sabha D. The Council of Ministers are collectively responsible to the Prime Minister...

Science, 10 months ago

Which of the following is used in making smoke bombs ? A. Sulphur B. Phosphorus C. Hydrogen D. Carbon...

Science, 1 year ago

which is the largest planet in the universe plz don't copy on net...

Music, 1 year ago

find six rational no between 2.1and 2.2 ...

Science, 1 year ago

what is a ans of this...