Related Questions

Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic?
A CO2
B O2
C NO
D NO2
Diamagnetic Materials এর চৌম্বক প্রবশ্যতা বাতাসের তুলনায়-
A কম
B বেশি
C সমান
D কোনটিই নয়
Diamagnetic materials
A Are magnetised by eddy currents only
B Are non-magnetic and can not be magnetised
C Are magnetised in direction opposite to the magnetic field
D Can be magnetised in one direction only
Diamagnetic materials are magnetised
A Strongly
B Only slightly
C With eddy currents only
D In a direction opposite to that of the applied field
Which of the following group of elements are diamagnetic?
A Argon, copper, silver
B Hydrogen, argon, copper
C Oxygen, copper, silver
D Hydrogen, oxygen, Argon
Wood is a diamagnetic material.
A True
B False
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

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