Question
Which of the following acid proves to be useful for the
purification of gold and silver?ÂSolution
Nitric acid is used for purification of various precious metals, including gold, silver, and platinum. In metallurgy, it is used in combination with alcohol for etching designs on metals like brass, copper, bronze, etc.
Select the INCORRECtLY spelt word.
Banana is vegetatively propagated through
Which method of training system is commonly used in Aonla?
What is the recommended light intensity for Dendrobium orchid cultivation?
Match list I with list II
Soil texture can be determined by
How an acid affect the microorganism when combined with heat
The sodium hazard (Sodicity hazard) of irrigation water are often expressed through SAR. What shall be considered a safe SAR value for irrigation water ...
The intersection of the demand and supply curves indicates the equilibrium:
Challenges in Minimum Support Price does not  includes
