Materials of Construction | Pharmaceutical Engineering | GPAT Mock Test

1. Which element is specifically added to 316 stainless steel to improve its resistance to pitting corrosion, particularly from chlorides?

2. Type I glass, also known as borosilicate glass, is highly resistant to chemical attack primarily due to its high content of:

3. Cast iron is a ferrous alloy with a high carbon content, typically in the range of:

4. The process of forming a passive, non-reactive surface film (like chromium oxide) on stainless steel to enhance its corrosion resistance is known as:

5. Galvanic corrosion occurs when:

6. Which of the following is a primary characteristic of aluminum that makes it suitable for pharmaceutical packaging like foils and tubes?

7. Brass is an alloy primarily composed of:

8. Despite its toxicity, lead is used in specific applications like radiation shielding due to its:

9. Which plastic is commonly used for making blister packs due to its excellent clarity and formability?

10. The main purpose of chromium plating on pharmaceutical equipment is to provide:

11. Which non-metallic material was widely used for insulation but is now heavily restricted due to its carcinogenic properties?

12. The method of preventing corrosion by coating a steel surface with a layer of zinc is called:

13. Pitting corrosion is a highly localized form of corrosion that results in the formation of:

14. The designation ‘L’ in 304L or 316L stainless steel indicates:

15. Type III glass, also known as soda-lime glass, is suitable for packaging:

16. Which of these materials is an example of a thermosetting plastic, meaning it cannot be remelted and reshaped after initial curing?

17. Which of the following has the highest thermal and electrical conductivity among the given options?

18. Cathodic protection is a corrosion control technique where the metal to be protected is made the:

19. The monomer unit for Polypropylene (PP) is:

20. What is a major disadvantage of using cast iron in pharmaceutical plant construction?

21. Type II glass is essentially soda-lime glass that has been treated on the inner surface with what substance to reduce alkali leaching?

22. Which metal is often used to plate steel cans (tin cans) to provide corrosion resistance, especially for food and beverage products?

23. Concrete is a composite material primarily composed of aggregate (gravel and sand), water, and which binding agent?

24. What property of silver limits its use as a primary material of construction, despite its excellent inertness?