(a) Which of the following ores can be concentrated by froth floatation method and why? Fe2O3, ZnS, Al2O3 (b) What is the role of silica in the metallurgy of Copper?

Q: In region A, the average pH value of the rainfall is 4.4. Find the average concentration of hydrogen…

A:

Q: Why are elemental dopants for Silicon or Germanium usually chosen from group XIII or group XV?

A: The elemental dopants for silicon or germanium is usually chosen from group XIII or group XV

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Q: Does water of crystallization alter the properties of a substance?

A: Does water of crystallization alter the properties of a substance

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Q: One amazing and useful fact about nature is that different elements and molecules each have a unique…

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Q: The 99.999% pure silicon crystals needed to make photovoltaic cells are gotten from something widely…

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Q: Why do you think silicon is used in electronic components?

A: Silicon is used for electronic device's because it is and element with very special properties. One…

Q: Hardness after quenching r/R 0.1 0.3 0,5 0,7 0,9 1 Hardness (Rc) 32 33 37 41 47 52 55 Hardness…

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Q: 1 12.A wafer fabication facility that is isolated from the outside environment and free from…

A: Answer is very simple.

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A: The buoyant force acts on sample is, Fb=W-T         (I)                   W=weight of the…

Q: 8.0 s, then comes to rest again. The velocity-versus-time plot for this car is given in FIGURE 2-37.…

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Q: which option describes a solid with a highly organized set of particles?

A: We are asked which  option describes a solid with a highly organized set of particles: The answer…

Q: is added to dental amalgam alloy powder to supress oxidation * O a) Sn O b) Zn c) Cr O d) Mercury

A: Multiple Choice Question

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Q: Referring only to a periodic table, give the ionic charge expected for each of these representative…

A: This question can be easily solved by applying the basic concept of periodic table and modern…

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Q: 5. A car accelerates constantly from an initial speed of 20 miles per hour to 60 miles per hour at a…

A: Given: The initial speed of the car is 20 mi/h. The final speed of the car is 60 mi/h. The…

Q: Find in equivalent weight of KMnO4 in acidic and alkaline medium?

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Q: For a Pb-30% Sn alloy, determine the phases present, their amounts, and their compositions 400 at…

A: Given data:C0=30%SnAt 300°C and 30%SnPhase Present→LAmount→L=100%Composition→L=30%Sn

Q: Volcanoes omit much hydrogen sulfide gas H 2S, Which reacts with oxygen in the air to form water and…

A: This question can be easily solved by playing the basic concept of reactions involving physical…

Q: What is the ideal speed to take a 100.0-m-radius curve banked at a 20.0°angle?

A: To take a curve with a 100 m radius and a 200 angle bank, the optimal speed must be determined.

Q: The clay mineral kaolinite (Al,Si,O;(OH)4) is formed by the weathering action of water containing…

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