Sludge and Scale Formation — Study Resources & PYQs
Formation, effects and control of sludge and scale in boilers.
- Estimated study time: 30 minutes
Study resources
- Scale and Sludge Formation in Boilers (ICAR eCourses) (Article) — Government of India eCourses lesson covering scale vs sludge, their causes, disadvantages and prevention. Written in Indian syllabus language.
- Boiler Troubles / Boiler Feed Water - Notes (Article) — Point-wise notes distinguishing sludge from scale (with the exact salts responsible), carry-over, and their remedies. Ideal for direct exam reproduction.
- Boiler Troubles: Priming, Foaming, Scale & Sludge (Video) (Video) — Curated YouTube search - these four boiler troubles are almost always taught in one lecture. Pick any B.Tech engineering chemistry video from the results.
- Water Technology - Lucknow University (B.Tech 1st year lecture notes) (PDF) — Covers the whole unit in one PDF: hardness types, degree of hardness, CaCO3 equivalent, zeolite process, scale and sludge. The main reading for this unit.
- Boiler Problems and Softening Methods - RGPV official notes (PDF) — University-hosted PDF defining sludge vs scale (which salts cause which), priming, foaming and caustic embrittlement, plus prevention. Very close to exam answer format.
- Boiler Troubles - Scale and Sludge Formation with Treatment (Er Sahil ka Gyan, Hindi) (Video) — Part of a full Hindi engineering-chemistry playlist. Covers scale, sludge and their removal in one sitting.
- Boiler Troubles - animated (sludge, scale, priming, foaming, caustic embrittlement) (Video) — Animated video that shows what is physically happening inside the boiler. The visuals make priming vs foaming much easier to keep apart.
- Boiler troubles: scale, sludge, priming and foaming - Engineering Chemistry (20AC14T) (Video) — College lecture recorded for I B.Tech I semester. Syllabus-aligned and covers all four terms in one video.
- Sludge and Scale Formation in Boilers - Dr. Anjali Saxena (Video) — Faculty lecture that sets out the four boiler problems that arise from hard feed water and then goes deep on sludge and scale.
- Water and its Treatment - Digitech Education notes (Article) — Handwritten-style notes covering the entire unit topic list including numericals. Note: the download is password-protected via the site's Instagram.
- Chemistry LibreTexts — Analytical Chemistry (Article) — Open chemistry reference for spectroscopy, electrochemistry, water chemistry and analytical methods.
Sludge and Scale Formation previous year questions
- (a) What is the principle of EDTA method? Describe the estimation of hardness of water by EDTA method. (12) (b) Describe the causes and harmful effects of scal…
- (a) Describe the details of scales and sludge. (b) Write a short note on injection moulding. (c) Give the preparation of Buna-S rubber. (d) Give the classifica…
Taught in these subjects
- ADVANCED ENGINEERING CHEMISTRY — BCHT21 · Government College of Engineering and Technology, Jammu
- Applied Engineering Chemistry — BCHT11 · Government College of Engineering and Technology, Jammu
- Advanced Engineering Chemistry — BST1202 · Government College of Engineering and Technology, Jammu
- Applied Engineering Chemistry — BST1102 · Government College of Engineering and Technology, Jammu