The most suitable material of construction for a sewer to carry sewage under high pressure is________________________?

Question: Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
[A].

10-3

[B].

103

[C].

10-15

[D].

l015

Answer: Option A

Explanation:

No answer description available for this question.

Question: M10 index of coke indicates its
[A].

compressive strength.

[B].

hardness.

[C].

abrasion resistance.

[D].

impact strength.

Answer: Option C

Explanation:

No answer description available for this question.

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.

Question: In the commercial production of which of the following metals, matallothermic reduction is used ?
[A].

Copper

[B].

Zinc

[C].

Zirconium

[D].

Nickel

Answer: Option B

Explanation:

No answer description available for this question.