Related Questions

Which one is the naturally occuring heaviest element?
A Mercury
B Thorium
C Uranium
D Protactinium
The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as
A Evaporation
B Cavitation
C Sublimation
D Stripping
Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation
A Pressure falls below the vapour pressure
B Pressure becomes very high
C Temperature becomes low
D All of the above
Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction?
A 2CO ⟷ C + CO2
B CO + H2O ⟷ CO2 + H2
C C + H2O ⟷ CO + H2
D C + 2H2O ⟷ CO2 + 2H2
'Decennial' means consisting of or occuring every ------.
A five years
B ten years
C six years
D twenty years
’Decennial' means consisting of or occuring every -------.
A five years
B ten years
C six years
D twenty years
Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than
A 5
B 10
C 20
D 35
The equation DU = Tds - PdV is applicable to infinitesimal changes occuring in
A An open system of constant composition
B A closed system of constant composition
C An open system with changes in composition
D A closed system with changes in composition
The metals occuring at the lower most position in the electromotive series
A Do not resist corrosion
B Resist corrosion very strongly
C Are very brittle
D Are heat insulators
Which gas is known as 'noble gas'?
A Hydrogen
B Oxygen
C Helium
D Carbon dioxide

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