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Worksheets

i appreciate ji

Total questions: 11

Worksheet time: 6mins

Name
Class
Date
1.

which among these is not a property of cmc

a)

corrosion resistance

b)

fracture toughness

c)

non brittle

d)

compressive

2.

choose the correct types of polymer composites

a)

particle reinforced

b)

metal reinforced

c)

oxide reinforced

d)

fibre reinforced

3.

working principle of xps

a)

Doppler effect

b)

Tyndall effect

c)

Photoelectric effect

d)

Magnetic effect

4.

Intensities of photoelectron provide information about

a)

focused beam of X-rays

b)

kinetic energy

c)

concentration of elements in sample

d)

Binding energy

5.

Which is not a part of XPS Instrument

a)

SIMS Analyzer

b)

Sample emission chamber

c)

X-Ray source

d)

Ion source

6.

Photo-emitted electrons escape only from the very top surface_____of the sample

a)

40-100

b)

70-110

c)

60-90

d)

200-300

7.

Silicon carbide matrix composites are fabricated by

a)

sono-chemical decomposition

b)

microemulsion methods

c)

hydro-thermal

methods

d)

infiltration methods

8.

kevlar is a strong ,heat-resistant synthetic fiber which was developed by__

a)

Joseph Cochrane

b)

Stephanie Kwolek

c)

Wallace Carothers

d)

Martha Coston

9.

The two traditional ceramic fabrication methods are:

a)

moulding

b)

hot pressing

c)

hammering

d)

sintering

10.

noise signal from inner layer electrons losing energy is collision to upper layer electrons is

a)

oxidation

b)

auger electron peaks

c)

Inelastic scattering

d)

chemical shifts

11.

Which material cannot be used as matrix material

a)

Nickel

b)

Titanium

c)

cobalt

d)

steel