Materials and Construction

421. Which of the following alloying elements is present in maximum percentage in high speed steel?

1. Molybdenum
2. Chromium
3. Tungsten
4. Vanadium

View answer

422. Which of the following alloys does not contain nickel?

1. Chloro, et-2 alloy
2. Monel
3. Inconel
4. Babbitt metal

View answer

423. Which of the following commercial metals is most abundantly found in India?

1. Copper
2. Aluminium
3. Nickel
4. Zinc

View answer

424. Which of the following comprises of hydrocarbons?

1. Mica flakes
2. Glass
3. Rubber
4. None of these

View answer

425. Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property?

1. Silicon
2. Phosphorus
3. Sulphur
4. None of these

View answer

426. Which of the following contains maximum percentage of carbon?

1. Boiler plate steel
2. Rail steel
3. Saws for cutting steel
4. Railway spring steel

View answer

427. Which of the following crystal structures characterises the austenitic stainless steel?

1. Simple hexagonal
2. Body centred cubic
3. Face centred cubic
4. None of these

View answer

428. Which of the following crystal structures characterises the ferritic stainless steel?

1. Face centred cubic
2. Body centred cubic
3. Simple hexagonal
4. None of these

View answer

429. Which of the following exercises most powerful influence on the mechanical properties of steel?

1. Manganese
2. Carbon
3. Phosphorous
4. Silicon

View answer

430. Which of the following finds the least commercial use?

1. Pure iron
2. High silicon iron
3. Low carbon steel
4. High carbon steel

View answer