The ratio of pure gold in 18 carat gold is
1). 60%
2). 75%
3). 80%
4). 90%
Answer This Question with Explaination and Earn! Click Here to Know More!
1. Which is the highest quality of hard coal?
2. The hottest part of the gas flame is known as
3. The gas used to extinguish fire is -?
4. Which of the following elements is not present in stainless steel?
6. Question 4.32:Distinguish between a sigma and a pi bond.
7. When water itself combines chemically with some element or mineral it is called
8. Which one of the following statements is not correct? Vulcanisation of rubber makes it
9. Which one of the following forms of phosphorus is most reactive?