Nobel Prize in Chemistry Traditional Chemistry

A, when lighting the alcohol lamp, you should use a match to light it, but you can't use the alcohol lamp to light it, which is easy to cause a fire, so A is wrong;

B. How to take the solid medicine: first put the test tube horizontally, clamp the granular solid medicine at the mouth of the test tube with tweezers, and then slowly erect the test tube, so that B is wrong;

C. Method of diluting concentrated sulfuric acid: slowly pour concentrated sulfuric acid into water along the wall of the container, and constantly stir with a glass rod, so C is operated correctly;

D. Specific method of measuring pH value: first put the pH test paper on the glass, then dip the liquid to be measured on the pH test paper with a glass rod, and compare the displayed color with the standard colorimetric card, so D is wrong.

So choose C.