GENERAL SCIENCE (GENERAL STUDIES) Part-3Total Questions: 5021. The metal used to built bridges is(a) gold.(b) silver.(c) platinum.(d) iron.Correct Answer: (d) iron.22. Non-metallic oxide are(a) acidic.(b) basic.(c) neutral.(d) (a) and (c).Correct Answer: (d) (a) and (c).23. Rusting of iron can be prevented by(a) alloying.(b) painting.(c) galvanising.(d) All of these.Correct Answer: (d) All of these.24. Which of the following is a good conductors of heat and electricity?(a) Graphite(b) Oxygen(c) Chlorine(d) NitrogenCorrect Answer: (a) Graphite25. Metals are(a) malleable.(b) ductile.(c) None.(d) Both.Correct Answer: (d) Both.26. Metals can be obtained economically from(a) minerals.(b) ores.(c) earth’s crust(d) none.Correct Answer: (b) ores.27. Which of the following have low melting and boiling points:(a) Phosphorus(b) Sodium(c) Iron(d) (a) and (b)Correct Answer: (d) (a) and (b)28. Brass contains(a) Copper and Zinc(b) Copper and Tin(c) Copper and Silver(d) Copper and NickelCorrect Answer: (a) Copper and Zinc29. Which is the purest commercial form of iron?(a) Pig iron(b) Steel(c) Stainless steel(d) Wrought ironCorrect Answer: (d) Wrought iron30. In galvanization, iron is coated with(a) Copper(b) Zinc(c) Tin(d) NickedCorrect Answer: (b) ZincSubmit Quiz« Previous12345Next »
