Related Questions

Commercial production of calcium carbide requires limestone and __________ as raw materials.
A Coke
B Sand
C Soda ash
D Fuel oil
The lime which contains mainly calcium oxide and slacks with water, is
A Fat lime
B Quick lime
C Hydraulic lime
D Poor lime
Solution X contains 40% salt and 60% water by weights, Solution Y contains 25% salt and 75% water. If a mixture of X and Y contains 30% salt. What percent of the weight of this mixture is solution X?
A 10%
B 33.3%
C 40%
D 42.5%
The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as
A Rigid
B Tough
C Ductile
D Plastic
Thermoplastic materials are those materials which
A Do not become hard with the application of heat and pressure and no chemical change occurs
B Are flexible and can withstand considerable wear under suitable conditions
C Are formed into shape under heat and pressure and results in a permanently hard product
D Are used as a friction lining for clutches and brakes
The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the 'Curie temperature'. Its value for cobalt is __________ °C.
A 768
B 1127
C 1359
D 1480
In drilling softer materials, the cutting speed is ___________ as compared to harder materials.
A Same
B Low
C High
D None of these
Certain type of materials generates an electrostatic charge or voltage when mechanical force is applied across them. Such materials are called
A Piezo-electric
B Photo-electric
C Thermo-electric
D Photo-resistive
Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials.
A circular
B triangular
C rectangular
D none of the above
The inventory of raw materials included in the working capital is usually about __________ months supply of raw materials valued at delivery prices.
A One
B Three
C Six
D Twelve

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