colloid-and-surface-chemistry-lab_experiments_demonstration-of-the-surface-tension-lowering-of-water-by-soaps/detergents,demonstration-of-the-surface-effect-on-chemical-properties-of-finely-divided-particles_references

[gayatripurigilla]

Defect description :in the references section there are links for our reference.when we click on linksdemonstration of the surface-effect on chemical properties of finely divided particles:www.nanoscape.northwestern.edu/vol2/04hall.pdfwww.nanohub.org/site/wiki/436/silvergold_module.pdfdemonstration of the surface tension lowering of water by soaps/detergents experiment:3)https://ga.water.usgs.gov/edu/surface-tension.htmlwe get an error page.**steps to reproduce the issue:* click on iiit hyderabad under the participating institutes in the vlabs main website. click on hyper link colloids and surface chemistry lab. click on list of experiments and experiments mentioned above. go to the references section. click on the links as shown in the screenshots.expected result:a page with relevant data is expected. actual result:"not found" error is displayedscreenshots:**

[VishwanathamSarika]

Commit id : 28e9692fd3663caf0fe29a3835cf023983814f49 (For the experiment-Demonstartion of surface tension by lowering of water by soaps/detergents )

Commit id: f57ba18ba978a8951e574c1a285c79c3904dc3d7 (For the experiment-Demonstration of surface effect on chemical properties of Finely divided particles)

Broken links are removed as the pages in the link might have been removed .

[adityagoda24]

Valid fix

[varshareddykumbham]

Valid fix Sarika

[surendra1233]

Both fixes are validated and can be moved to production, @VishwanathamSarika ,S5