Hardest material so far found is
Question: Hardest material so far found is
[A].
diamond
graphite
carborundum
pumice stone
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
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If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as
Question: If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as
[A].solubility increases as temperature increases. [B].
solubility increases as temperature decreases. [C].
solubility is independent of temperature. [D].
solubility increases or decreases with temperature depending on the Gibbs free energy change of solution. Answer: Option B
Explanation:
No answer description available for this question.
Joule-Thomson co-efficient for a perfect gas is
Question: Joule-Thomson co-efficient for a perfect gas is
[A].zero [B].
positive [C].
negative [D].
none of these Answer: Option A
Explanation:
No answer description available for this question.
Ionisation potential applied across the electrodes of electrostatic tar precipitator is around
Question: Ionisation potential applied across the electrodes of electrostatic tar precipitator is around
[A].230 V AC [B].
60 KV AC [C].
230 V DC [D].
60 KV DC Answer: Option D
Explanation:
No answer description available for this question.
Margarine is a/an
Question: Margarine is a/an
[A].fat [B].
explosive [C].
plasticiser [D].
rocket propellant Answer: Option A
Explanation:
No answer description available for this question.
In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are.
Question: In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are.
[A].μ , α and θ all have units of m/s. [B].
μ , α and θ all have units of m2/s. [C].
α and θ have units of m2/s, while μ has unit of m/s. [D].
α and θ have units of m/s, while μ has unit of m2/s. Answer: Option C
Explanation:
No answer description available for this question.
Addition of silicon to cast iron ___________________?
Addition of silicon to cast iron ___________________?A. Promotes graphite module formation
B. Improves its ductility
C. Does not promote graphite flakes formation
D. Increases the fluidity of molten metal