The two elements that are frequently used for making transistors are:_____??A.boron and aluminiumB.silicon and germaniumC.iridium and tungstenD.niobium and columbium
Shayna008
Asked:
December 2022
The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of _____??A. bromineB. fluorineC. chlorineD. sulphur
Shayna008
Asked:
December 2022
.The property of a substance to absorb moisture from the air on exposure is called..??
Shayna008
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December 2022
Which of the following is used as a lubricant?A. GraphiteB. Silica C. Iron OxideD. Diamond
Shayna008
Asked:
December 2022
Quartz crystals normally used in quartz clocks etc. is chemically-...??A.silicon dioxideB.germanium oxideC.a mixture of germanium oxide and silicon dioxideD.sodium silicate