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
Which are known as non - luminous irregular nebulae?
What is meant by Incidental Correlation?
Science is both a process and product-Substantiate
what is center of gravity?
What is a nuclear triad?
In which year was the meteorology department founded?
What is super nova?
What are comets?
a private address 172.116.0.0 will borrow ? bits from the HOST to give one 120 subnets - range = ?
When did india conduct three under ground nuclear tests?
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
exactly how does an RTD 3 wire or 4 wire device cancel out the resistance of the wires , opposed to a 2 wire RTD? Is it because you have resistors in parallel , or because something to do with the electronic circuit the RTD is connected to ?
How does a RCCB work? Difference between ELCB & RCCB?
what are the advantages and disadvantages of empirical knowledge?
What is voltage? ?? What type of of show voltage. ?? Practillay how's voltage?