Question: Crystal structure of a material is, generally, examined by
[A].

naked eye

[B].

optical microscope

[C].

metallurgical microscope

[D].

X-ray techniques

Answer: Option D

Explanation:

No answer description available for this question.

Question: Micro-structure of a material is, generally, examined by
[A].

naked eye

[B].

optical microscope

[C].

X-ray techniques

[D].

none of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: Macro-structure of a material is, generally, examined by
[A].

naked eye

[B].

optical microscope

[C].

metallurgical microscope

[D].

X-ray techniques

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which of the following statement is true about brittle fracture?
[A].

High temperature and low strain rates favour brittle fracture

[B].

Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture

[C].

Brittle fracture is always preceded by noise

[D].

Cup and cone formation is characteristic for brittle materials

Answer: Option B

Explanation:

No answer description available for this question.

Question: Dye penetrant method is generally used to locate
[A].

core defects

[B].

surface defects

[C].

superficial defects

[D].

temporary defects

Answer: Option B

Explanation:

No answer description available for this question.

Question: Which of the following solids are malleable and ductile?
[A].

Ionic solids

[B].

Covalent solids

[C].

Metallic solids

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: The bond formed by transferring electrons from one atom to another is called
[A].

ionic bond

[B].

covalent bond

[C].

metallic bond

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Closed packed hexagonal space lattice is found in
[A].

zinc, magnesium, cobalt, cadmium, antimony and bismuth

[B].

gamma-iron, aluminium, copper, lead, silver and nickel

[C].

alpha-iron, tungsten, chromium and molybdenum

[D].

none of the above

Answer: Option A

Explanation:

No answer description available for this question.

Question: Face centred cubic space lattice is found in gamma-iron, aluminium, copper, lead, silver and nickel.
[A].

True

[B].

False

Answer: Option A

Explanation:

No answer description available for this question.

Question: Body centred cubic space lattice is found in
[A].

zinc, magnesinm, cobalt, cadmium, antimony and bismuth

[B].

gamma-iron, aluminium, copper, lead, silver and nickel

[C].

alpha-iron, tungsten, chromium and molybdenum

[D].

none of the above

Answer: Option C

Explanation:

No answer description available for this question.