The X-ray fluorescence technique used for the rapid determination of the elemental composition of flyash. This analysis revealed that there is a major portion of the following element in flyash
Silica
Fly ash is the fine residue collected from the flue gases of coal-fired thermal power plants. X-ray fluorescence (XRF) excites atoms with X-rays and measures the characteristic secondary X-rays emitted, giving a rapid, non-destructive estimate of elemental composition (usually reported as oxides).
XRF studies of fly ash consistently show that silica (SiO2) is the dominant component, typically about 40–60%, followed by alumina (Al2O3, about 20–30%) and iron oxide; these come from the clay and quartz minerals in coal.
Oxides of titanium, magnesium and potassium are present only in minor amounts, usually a few per cent or less.
The high silica content is why fly ash is used as a pozzolana in cement, concrete and bricks.
Hence, the answer is Silica.
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.................... is a client server application that identifies each host on the internet with a unique user-friendly name.
Every OS has a ................ or .......... which primarily resides in the main memory of the computer to perform some of the basic functions of the OS.
(i) Kernel
(ii) Interface
(iii) Nucleus
(iv) Compiler
Codes:
Which of the following are referred to as low level language?
(i) Machine language
(ii) Assembly language
(iii) High level language
(iv) Natural language
Codes:
Match the following:
List I List II (a) New York Public Library (i) Shelv AR (b) Miami University Augmented Research Group (ii) Smart library (c) Oula University Library (iii) Wolf Walk (d) North Carolina State University (iv) Find the future Codes:
Which part of the QR code represents the encoded data?
