MCQs
Total Questions : 350
| Page 6 of 35 pages
Answer: Option D. -> Sulphur, lead and phosphorus
The machinability of steel is improved by adding Sulphur, lead and phosphorus
The machinability of steel is improved by adding Sulphur, lead and phosphorus
Answer: Option D. -> Improving machinability
Addition of lead and bismuth to aluminium results in Improving machinability
Addition of lead and bismuth to aluminium results in Improving machinability
Answer: Option B. -> Improvement of corrosion resistance
When manganese is added to aluminum, its strength is increased slightly through solution strengthening and its strain hardening is also improved
When manganese is added to aluminum, its strength is increased slightly through solution strengthening and its strain hardening is also improved
Answer: Option D. -> Magnesium
Nodular cast iron is produced by adding magnesium to the molten cast iron.
Nodular cast iron is produced by adding magnesium to the molten cast iron.
Answer: Option C. -> One of the best known age and precipitation hardening systems
The copper provides substantial increases in strength and facilitates precipitation hardening.
The introduction of copper to aluminum can also reduce ductility and corrosion resistance.
The copper provides substantial increases in strength and facilitates precipitation hardening.
The introduction of copper to aluminum can also reduce ductility and corrosion resistance.
Answer: Option A. -> Below 10°K
Super conduction by metals is observed in the temperature range of Below 10°K
Super conduction by metals is observed in the temperature range of Below 10°K
Answer: Option D. -> 90% magnesium and 9% aluminium with some copper
Dow metal contains 90% magnesium and 9% aluminium with some copper
Dow metal contains 90% magnesium and 9% aluminium with some copper
Answer: Option A. -> Below 723°C
alpha iron is a component of steel and cast iron, conferring Ferromagnetism.
the maximum solubility is at 727 °C
alpha iron is a component of steel and cast iron, conferring Ferromagnetism.
the maximum solubility is at 727 °C
Answer: Option B. -> Mesomorphous material
The material in which the atoms are arranged regularly in some directions but not in others, is called Mesomorphous material
The material in which the atoms are arranged regularly in some directions but not in others, is called Mesomorphous material
Answer: Option D. -> Between 910°C and 1400°C
Gamma iron is an allotropic form of iron existing between the temperature 910°C and 1400°C and having a face-centered cubic lattice
Gamma iron is an allotropic form of iron existing between the temperature 910°C and 1400°C and having a face-centered cubic lattice
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