For blue-black ink preparation the materials that are used among the following ones are

Options :
  1. Gallic acid
  2. Tannic acid
  3. Ferrous sulphate
  4. All of these
Answer and Explanation :-

Answer: Option 4

Explanation:

Sorry there is no explanation for this answer. Please help others by posting your response below

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

Previous Question : The mixture of sodium or potassium salts of which of the following chemical substances is Soap?

Next Question : Among the following various types of glasses the one that is used in making lenses and prisms is

Click here for online test on General Science

Responses


 (Getemail alerts when others member replies)







We become a master of something only when we know the truth of it. Similarly, when we know the truth of our soul and the oneness of the Universe then we are a Master of Life.
-Thomas Vazhakunnathu God Does Not Play Dice