Overall heat transfer co-efficient for cooling of hydrocarbons by water is about

Question: Corrosion rate can not be lowered by reducing the __________ of the corroding medium.
[A].

concentration

[B].

velocity

[C].

temperature

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Change in volume of metals from absolute zero temperature to their melting points is
[A].

almost same for all metals.

[B].

different for different metals.

[C].

less for low melting point metals.

[D].

less for high melting point metals.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Magnesium is present in
[A].

haemoglobin

[B].

chlorophyll

[C].

hypo solution

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.