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
Which of the following materials are diamagnetic?
A Silver
B Copper
C Silver and copper
D Iron
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
Wood is a diamagnetic material.
A True
B False
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
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
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

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