admin, Author at - Page 136 of 11180

Alpha iron is stable __________ °C.

Question: Alpha iron is stable __________ °C.
[A].

above 1403

[B].

upto 910

[C].

above 1800

[D].

between 910 & 1403

Answer: Option B

Explanation:

No answer description available for this question.

Alpha iron is stable __________ °C. Read More »

Galvanised iron is

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Galvanised iron is
[A].

harder

[B].

protected from rusting

[C].

alumina coated iron

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Galvanised iron is Read More »

CHEMICAL ENGINEERING, Materials and Construction

White cast iron as compared to grey cast iron is

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: White cast iron as compared to grey cast iron is
[A].

more durable

[B].

very brittle

[C].

very hard

[D].

all (a), (b) & (c)

Answer: Option D

Explanation:

No answer description available for this question.

White cast iron as compared to grey cast iron is Read More »

CHEMICAL ENGINEERING, Materials and Construction

Atmospheric corrosion of metals result from their

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Atmospheric corrosion of metals result from their
[A].

slow oxidation

[B].

fast oxidation

[C].

fast hydration

[D].

slow dehydration

Answer: Option A

Explanation:

No answer description available for this question.

Atmospheric corrosion of metals result from their Read More »

CHEMICAL ENGINEERING, Materials and Construction

__________ iron is produced, when molten pig iron is allowed to cool gradually.

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: __________ iron is produced, when molten pig iron is allowed to cool gradually.
[A].

White cast

[B].

Grey cast

[C].

Wrought

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

__________ iron is produced, when molten pig iron is allowed to cool gradually. Read More »

CHEMICAL ENGINEERING, Materials and Construction

__________ iron is produced, when molten pig iron is chilled suddenly.

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: __________ iron is produced, when molten pig iron is chilled suddenly.
[A].

White cast

[B].

Grey cast

[C].

Wrought

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

__________ iron is produced, when molten pig iron is chilled suddenly. Read More »

CHEMICAL ENGINEERING, Materials and Construction

Corrosion involves exchange of electrons in __________ corrosion.

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Corrosion involves exchange of electrons in __________ corrosion.
[A].

chemical

[B].

electrochemical

[C].

both (a) & (b)

[D].

neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question.

Corrosion involves exchange of electrons in __________ corrosion. Read More »

CHEMICAL ENGINEERING, Materials and Construction

Iron rust is

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Iron rust is
[A].

ferrous oxide.

[B].

hydrated ferric oxide.

[C].

powdered iron.

[D].

ferric sulphide.

Answer: Option B

Explanation:

No answer description available for this question.

Iron rust is Read More »

CHEMICAL ENGINEERING, Materials and Construction

The apex of an equilateral-triangular coordinate (in ternary liquid system) represents a/an

CHEMICAL ENGINEERING, Mass Transfer / admin

Question: The apex of an equilateral-triangular coordinate (in ternary liquid system) represents a/an
[A].

pure component

[B].

binary mixture

[C].

ternary mixture

[D].

insoluble binary system

Answer: Option A

Explanation:

No answer description available for this question.

The apex of an equilateral-triangular coordinate (in ternary liquid system) represents a/an Read More »

CHEMICAL ENGINEERING, Mass Transfer

Carbon is present in steel wholly in the

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Carbon is present in steel wholly in the
[A].

combined form.

[B].

free state as graphite.

[C].

both (a) and (b).

[D].

neither (a) nor (b).

Answer: Option A

Explanation:

No answer description available for this question.

Carbon is present in steel wholly in the Read More »

CHEMICAL ENGINEERING, Materials and Construction

Author name: admin