1. The process in which certain chemicals eat up or corrode away certain materials like glass, metals etc is called
(A) etching process
(B) metallurgy
(C) electroplating
(D) all three
2. It is the process of engraving a design on metallic plates or glass etc with the help of acids or other corrosive chemicals
(A) etching process
(B) metallurgy
(C) electroplating
(D) all three
3. It is the process in which a design or drawing on the surface of the metal is produced with certain chemicals
(A) all three
(B) metallurgy
(C) electroplating
(D) etching process
4. Is a convenient method for the production of various circuits and chips in electronics technology
(A) etching process
(B) metallurgy
(C) electroplating
(D) all three
5. Is used to engrave a design or drawing on smooth metallic or glass plates
(A) metallurgy
(B) etching process
(C) electroplating
6. The etching process consists of steps
(A) 4
(B) 7
(C) 6
(D) 5
7. A uniform layer of ground forming substance or resist used in etching process is
(A) wax
(B) varnish
8. _____ is used to sketch a design on the etching plate
(A) brush
(B) ball point
(C) etching needle
(D) chalk
9. In etching process only the open surface is corroded while the resist surface is not damaged
(A) electroplating
(B) metallurgy
(C) etching process
(D) all three
10. _____ is used to remove resist from the etched plate
(A) thinner
(B) all three
(C) turpentine oil
(D) alcohol
11. Etching reagent is used for the etching process
(A) all three
(B) ammonium molybdate
(C) ferric chloride & hydrochloric acid
(D) nitric acid
12. Number of NO₂ groups present in picric acid is
(A) 2
(B) 5
(C) 4
(D) 3
13. _____ is used for the etching of steel
(A) nitric acid
(B) all three
(C) ferric chloride & hydrochloric acid
(D) ammonium molybdate
14. Hard substances like stainless steel etc can be etched with the help of
(A) nitric acid
(B) ammonium molybdate
(C) ferric chloride & hydrochloric acid
(D) all three
15. The mixture of chromium oxide and sodium sulphate is commonly called
(A) ammonium sulphate
(B) palmerton reagent
(C) peroxide
(D) all three
16. _____ is used for the etching of glass
(A) hydrochloric acid
(B) hydrofluoric acid
(C) picric acid
(D) all three
17. The type of etching that has resist made up of varnish is called
(A) electrolytic etching
(B) chemical etching
(C) aquatint
(D) no one
18. _____ is also called anode etching or electro-typing
(A) aquatint
(B) chemical etching
(C) no one
(D) electrolytic etching
19. The comparative study of metals can be carried out with the help of
(A) all three
(B) metallurgy
(C) electroplating
(D) etching process
20. The preparation of base or basic plate is the most important step in
(A) metallurgy
(B) etching process
(C) electroplating
(D) all three