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
A person needs 5 boards, each 3 feet 8 inches long but wood is not sold in fraction of a feet. What is the minimum length of wood, in feet, he must buy?
A 20
B 18
C 19
D 17
A carpenter needs 4 boards, each 2 feet 10 inches long,. If wood is sold only by the feet, what is the minimum length, in feet, of wood he must buy?
A 9
B 10
C 11
D 12
Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the
A Decolourisation of sugar
B Solvent recovery from air and gases
C Absorption of gases and vapor
D Electrode manufacture
Compressive strength of wood is usually more along the grains. The tenile strength of wood as compared to that of steel is about
A Half
B One third
C One fifth
D One twelfth
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
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
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

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