Correct Option is (C)
Erbium-doped fibre amplifiers are used in optical fibre communication systems.
1. ⇒ (MHT CET 2023 10th May Morning Shift )
Which of the following elements is doped with to obtain fibre amplifiers for optical fibre communication system?
A. Zn
B. Cu
C. Er
D. La
2. ⇒ (MHT CET 2021 21th September Evening Shift )
Which property from following is NOT exhibited by interstitial compounds?
A. Their melting points are higher than pure metal.
B. Their densities are less than parent metal.
C. Their chemical properties are different than parent metal.
D. These are hard and good conductors of heat and electricity.
Correct Option is (C)
Chemical properties of interstitial compounds are similar to the parent metal.
3. ⇒ (MHT CET 2021 20th September Morning Shift )
Identify the correct statement about properties of interstitial compounds.
A. Melting point of these compounds is lower than parent metal.
B. Densities of these compounds are higher than parent metal.
C. Chemical properties of interstitial compounds are different than parent metal.
D. Metallic carbides are chemically inert.
Correct Option is (D)
Currently no explanation available