Bissoy.com
Doctors Medicines MCQs Q&A

Which of the following is incorrect? a) Pyrolusite is an ore/mineral of Manganese b) Ilmenite is an ore/mineral of Titanium c) Calamine is an  ore/mineral of Copper

Which of the following is incorrect? a) Pyrolusite is an ore/mineral of Manganese b) Ilmenite is an ore/mineral of Titanium c) Calamine is an  ore/mineral of Copper Correct Answer Only c

Element Ore
Manganese Pyrolusite
Titanium Ilmenite
Zinc Calamine

Related Questions

When an ant bites calamine solution is applied on the skin. The chemical formula of calamine is
The DRDO has indigenously developed a high-strength beta titanium alloy for manufacturing intricate components for aerospace applications. The beta titanium alloy contains which of the following metals along with Titanium?
In the question below are given two statements followed by three conclusions numbered I, II and III. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: Some camphor are rubidium All bauxite is titanium All rubidium is bauxite Conclusions: I. All rubidium is titanium II. Some titanium is a camphor
Which of the following minerals and their ores are correctly matched?
1. Zinc-calamine
2. Platinum-iridium
3. Tin-cassiterite
4. Copper-carnolite
An alloy A contains two elements, copper and tin in the ratio of 2 : 3, whereas an alloy B contains the same elements in the ratio of 3 : 4. If 20 kg of alloy A, 28 kg of alloy B and some more pure copper are mixed to form a third alloy C which now contains copper and tin in the ratio of 6 : 7, then what is the quantity of the pure copper mixed in the alloy C?
An alloy A contains two elements, copper and tin in the ratio of 2 ∶ 3, whereas an alloy B contains the same elements in the ratio of 3 ∶ 4. If 20 kg of alloy A, 28 kg of alloy B and some more pure copper are mixed to form a third alloy C which now contains copper and tin in the ratio of 6 ∶ 7, then what is the quantity of the pure copper mixed in the alloy C?
Two alloys used to manufacture the third alloy. The first alloy contains Copper and Zinc only, and the second alloy contains Aluminium and Copper only. The Copper content in the two alloys is 40% and 60% respectively. The Zinc content in the new alloy should be between 30 to 40%. How much will be the minimum and maximum Copper content in the new alloy?
An alloy of copper and tin weights 400 grams. It contains 75% of copper. How much percentage of copper with respect to the initial mixture should be added to the alloy so that percentage of copper increased to 80%?
Alloys A and B contain copper and zinc. In alloy A percentage of copper is 25% and in alloy B ratio of copper and zinc is 3 ∶ 5. In what ratio of A and B to be mixed to get a new alloy containing copper and zinc in the ratio 1 ∶ 2?
A 75 kg mixture of copper and tin contains copper and tin in the ratio 3 ∶ 2. 25 kg of the mixture is removed and replaced with copper and the operation is repeated twice. At the end of the two removals and replacements, what is the ratio of tin and copper in the resultant mixture?