Related Questions

Which of the following terminology is not used for size reduction of materials to fine sizes or powders?
A Comminution
B Dispersion
C Pulverisation
D Compression
The driving force for the sintering of a powder compact is
A Strain energy
B Surface energy
C Volume energy
D Stacking fault energy
Which of the following mechanism is an approximate straight line motion mechanism?
A Watt’s mechanism
B Grasshopper mechanism
C Robert’s mechanism
D All of the mentioned
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line
A joining the corresponding points
B perpendicular to line
C at 450 to line
D none of the mentioned
The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because
A whole of the mechanism in the Ackerman steering gear is on the back of the front wheels and (
B the Ackerman steering gear consists of turning pairs
C the Ackerman steering gear is most economical
D both (a) and (b)
A mechanism consisting of four links is called a __________ mechanism.
A Simple
B Compound
C Binary
D None of these
Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
A Proportional to
B Independent of
C Inversely proportional to
D Proportional to the square of
তরল অবস্থায় পরিবর্তিত না হয়ে কঠিন অবস্থা থেকে সরাসরি গ্যসীয় অবস্থায় রূপান্তরিত হওয়ার পদ্ধতিকে বলে(The conversion of solid state directly into a gaseous state eithout passing through liquid state is called)
A Sublimation
B Evaporation
C Freezing
D Boiling
In each of the following questions, a sentence has been given in Active (or Passive) voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive (or Active) voice :- I know him.
A He is known by me.
B He was known to me.
C He has been known by me.
D He is known to me.
The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances. This is the
A Lewis-Randall rule
B Statement of Vant-Hoff equation
C Le-Chatelier's principle
D None of these

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