Please tell me how to melt hard granite stones using chemicals on the surface of stones.tell me were I can get that type of chemicals.

You can probably melt granite with a reaction like the thermite reaction: Thermite - Wikipedia, the free encyclopedia

This will be dependent on the type of granite though, as it has a large range of melting point values. Thermite can reach 2500C, while the melting point of granite is normally under 2000C

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Originally Posted by vinay100000

hello sir i was ask a question on melting of granite.you was tell thermite is usefull to us.but that is a very big fire.i want chemicals like acids or others.do you know about that please tell me sir

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Ah okay. I was confused by your use of the word "melt". Melting is a transition from solid to liquid by an increase in temperature. You are looking for something that would dissolve or corrode the granite?

I will have a think and get back to you here :)

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Originally Posted by vinay100000

hi i want create holes in hard stones(granite or any other) with the depth of 3 to 4 inches without any sounds as quick as possible.

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You're probably looking at using a very strong corrosive like higly concentrated sulphuric acid. You can see the effects of this corrosion on ancient marble statues that have slowly been corroded by acid rain.

It won't be a fast process. I think the most quick but fairly unsafe way will be thermite. The second quickets would be to drill using a tungten or diamond tipped drillbit. And chemical corrosion will be both hazardous and slow.