Engineering Geology Questions and Answers – Physical Properties – 02

This set of Engineering Geology MCQs focuses on “Physical Properties – 02”.

1. Colour changing phenomenon which involves oxidation is ____________
a) Tarnish
b) Iridescence
c) Allochromatic
d) Idiochromatic
View Answer

Answer: a
Explanation: Tarnish nay be described as a phenomenon of change of original colours of mineral to some secondary colours at its surface due its oxidation at the surface.

2. Lustre doesn’t depend on?
a) Refractive index mineral
b) Absorption of mineral
c) Transmittance of mineral
d) Nature of reflecting surface
View Answer

Answer: c
Explanation: Lustre depends on: refractive index of the mineral, absorption capacity of the mineral and nature of reflecting surface.

3. Lustre is dependent on colour.
a) True
b) False
View Answer

Answer: b
Explanation: Lustre is entirely independent of colour of the mineral. A deeply coloured mineral may be lustreless and vice-versa.
advertisement
advertisement

4. High density, high refractive index is characteristic of ___________
a) Non-metallic minerals
b) Metallic minerals
c) Semi-metallic minerals
d) Metalloid minerals
View Answer

Answer: b
Explanation: Metallic lustres are characteristics of high density, high refractive index and opaque minerals like galena, pyrite and chalcopyrite.

5. Type of shine or lustre associated with lustre of diamond is ___________
a) Adamantine
b) Metallic
c) Pearly
d) Vitreous
View Answer

Answer: a
Explanation: Adamantine is the other name for shine of diamonds. Very brilliant; the best example is diamond.
Sanfoundry Certification Contest of the Month is Live. 100+ Subjects. Participate Now!

6. Streak is an important diagnostic property of ___________
a) Non-coloured minerals
b) Coloured minerals
c) Metallic minerals
d) Non-metallic minerals
View Answer

Answer: b
Explanation: Streak is an important diagnostic property of many coloured minerals. Simply defined as the colour of the finely powdered mineral as obtained by scratching or rubbing the mineral over rough unglazed porcelain plate.

7. Which mineral gives streak?
a) Coloured and translucent
b) Colourless and opaque
c) Coloured and opaque
d) Coloured and transparent
View Answer

Answer: c
Explanation: Colourless and transparent minerals will always give a colourless streak that has no significance. The coloured and opaque minerals, especially of ore groups, give typically characteristic streaks quite different from other similarly looking minerals.
advertisement

8. The mineral which is almost black but gives brown streak is?
a) Magnetite
b) Garnet
c) Hornblende
d) Chromite
View Answer

Answer: d
Explanation: Chromite and magnetite resemble closely in their other physical properties: both are almost black. These may be at once distinguished by their streaks: brown for chromite and black for magnetite.

9. Hardness of a mineral depends upon ___________
a) Chemical composition
b) Atomic constitution
c) Chemical composition and atomic constitution
d) Physical makeup
View Answer

Answer: c
Explanation: Hardness may be defined as the resistance, which a mineral offers to an external deformation action such as scratching, abrasion, rubbing or indentation. Hardness of a mineral depends on its chemical composition and atomic constitution.
advertisement

10. The scale of hardness is?
a) Ritcher
b) Mohs
c) Ohm
d) Mho
View Answer

Answer: b
Explanation: It was in 1822 that Austrian mineralogist F.Mohs proposed a relative, broadly quantitative “scale of hardness” of minerals assigning values between 1 and 10.

11. Minerals of equal hardness do no scratch each other.
a) True
b) False
View Answer

Answer: b
Explanation: It must be remembered that minerals of equal hardness scratch each other. The best example is that diamond cuts diamonds.

Sanfoundry Global Education & Learning Series – Engineering Geology.

To practice MCQs on all areas of Engineering Geology, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

advertisement
advertisement
Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & discussions at Telegram SanfoundryClasses.