Question – 1
1. When ________ is added to aluminium, it’s casting ability increases.
- A. silicon
- B. bronze
- C. bismuth
- D. lead
- Answer:A
- Answer Explanation:
Question – 2
2. Valves are used in piping systems to ____________.
- A. control the liquid flow
- B. evaporate the liquid
- C. increase the density of the liquid
- D. decrease the temperature of the liquid
- Answer:A
- Answer Explanation:
Question – 3
3. _________ process is implemented at Rourkela Steel Plant for making steel.
- A. L-D
- B. Bessemer
- C. Open-hearth
- D. Metallic
- Answer:A
- Answer Explanation:
Question – 4
4. In high speed steels _______ is used as an alloying element to replace tungsten.
- A. cadmium
- B. nickel
- C. molybdenum
- D. vanadium
- Answer:C
- Answer Explanation:
Question – 5
5. __________ defect takes place when atoms are packed in an imperfect manner during crystallization.
- A. Line
- B. Point
- C. Circular
- D. Surface
- Answer:B
- Answer Explanation:
Question – 6
6. When electrons are transferred from one atom to another, __________ bond is formed.
- A. an ionic
- B. a hypervalent
- C. a covalent
- D. a metallic
- Answer:A
- Answer Explanation:
Question – 7
7. ___________ are used to reduce friction between axle and wheel.
- A. Levers
- B. Pulleys
- C. Castings
- D. Bearings
- Answer:D
- Answer Explanation:
Question – 8
8. Which among the following terms describe a decrease in speed?
- A. Acceleration
- B. Deceleration
- C. Velocity
- D. Rotation
- Answer:B
- Answer Explanation:
Question – 9
9. ________ would be best for using as a boat anchor.
- A. Plastic
- B. Wood
- C. Metal
- D. Foam
- Answer:C
- Answer Explanation:
Question – 10
10. Which among the following is similar to a crane?
- A. Elevator
- B. Jet
- C. Spring
- D. Lever
- Answer:A
- Answer Explanation:
Question – 11
11. A steel bar _______ when heated.
- A. contracts
- B. expands
- C. remains unchanged
- D. melts
- Answer:B
- Answer Explanation:
Question – 12
12. When water is added to a tank, the water pressure at the bottom of the tank ________.
- A. increases
- B. decreases
- C. changes depending on the temperature of the water
- D. remains constant
- Answer:A
- Answer Explanation:
Question – 13
13. _________ screws should be used for transmission of power.
- A. Thick
- B. Low efficiency
- C. High efficiency
- D. Light weight
- Answer:C
- Answer Explanation:
Question – 14
14. A clock pendulum swaying back and forth can be described by which among the following actions.
- A. Free falling body
- B. Gravitational force
- C. Periodic motion
- D. Acceleration
- Answer:C
- Answer Explanation:
Question – 15
15. A concrete block can be dragged easily across the pavement by _________.
- A. lubricating the pavement
- B. pulling the block harder
- C. using rods
- D. using a rope
- Answer:A
- Answer Explanation: