The 30-share Sensex, opened Friday distinctly weak at 34,563.29 and continued to slide to touch a low of 34,140.32 points (intra-day). The index was trading down 636.83 points, or 1.82 per cent at 34,142.75 at 1400 hrs. The gauge had lost 382.90 points Wednesday. The 50-share NSE Nifty plunged 196.40 points, or 1.88 per cent, to 10,256.65. Index heavyweight Reliance Industries...