CHEMICAL ENGINEERING

For infinite parallel planes having emis-sivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by

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Question: For infinite parallel planes having emis-sivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by
[A].

(ε1 + ε2)/ε1.ε2

[B].

ε1.ε2/(ε1 + ε2 – ε1.ε2)

[C].

ε1.ε2

[D].

ε1 + ε2

Answer: Option B

Explanation:

No answer description available for this question.

In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will

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Question: In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will
[A].

remain the same

[B].

be halved

[C].

also be. doubled

[D].

become one fourth

Answer: Option A

Explanation:

No answer description available for this question.

Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its

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Question: Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its
[A].

elasticity

[B].

strength

[C].

plasticity

[D].

weathering characteristics

Answer: Option D

Explanation:

No answer description available for this question.