Class 10 Exam  >  Class 10 Questions  >   Assertion (A): A mineral is called ore, when... Start Learning for Free
Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.
Reason (R): All ores are minerals but all minerals are not ores.
  • a)
    Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
  • b)
    Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
  • c)
    Assertion (A) is true but reason (R) is false.
  • d)
    Assertion (A) is false but reason (R) is true.
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Assertion (A): A mineral is called ore, when metal is extracted from ...
Minerals are naturally occurring chemical substances in the earth’s crust obtained by mining. But a mineral is called an ore only when the metal can be extracted from it conveniently and economically. Thus, all ores are minerals but all minerals are not ores.
View all questions of this test
Most Upvoted Answer
Assertion (A): A mineral is called ore, when metal is extracted from ...
Assertion (A): A mineral is called ore when metal is extracted from it conveniently and economically.
Reason (R): All ores are minerals but all minerals are not ores.

Explanation:
- A mineral is a naturally occurring substance that is solid and inorganic. It has a specific chemical composition and a definite crystal structure.
- An ore is a type of mineral that contains a high enough concentration of a particular metal that it can be economically extracted and used for industrial purposes.
- Ores are valuable sources of metals and are usually mined for their metal content.

Assertion (A) is true:
- A mineral is called ore when metal is extracted from it conveniently and economically.
- This means that an ore is a mineral that contains a metal in a high enough concentration that it is worth extracting.

Reason (R) is true:
- All ores are minerals, meaning that ores are a subset of minerals.
- However, not all minerals are ores.
- Only minerals that contain a high enough concentration of a particular metal to be economically viable for extraction are considered ores.

Reason (R) is not the correct explanation of assertion (A):
- The reason given does not fully explain why a mineral is called an ore. It simply states that all ores are minerals but not all minerals are ores.
- The explanation for why a mineral is called an ore lies in the fact that it contains a high enough concentration of a particular metal to be economically extracted.

Conclusion:
- Both assertion (A) and reason (R) are true.
- However, reason (R) is not the correct explanation of assertion (A).
- Therefore, the correct answer is option 'B' - Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
Explore Courses for Class 10 exam

Similar Class 10 Doubts

Read the extract and answer the questions that follows:Minerals are usually found in “ores”. The term ore is used to describe an accumulation of any mineral mixed with other elements. The mineral content of the ore must be in sufficient concentration to make its extraction commercially viable. The type of formation or structure in which they are found determines the relative ease with which mineral ores may be mined. This also determines the cost of extraction. It is, therefore, important for us to understand the main types of formations in which minerals occur.Minerals generally occur in these forms:(i) In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth’s surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.(ii) In sedimentary rocks a number of minerals occur in beds or layers. They have been formed as a result of deposition, accumulation and concentration in horizontal strata. Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure. Another group of sedimentary minerals include gypsum, potash salt and sodium salt. These are formed as a result of evaporation especially in arid regions.(iii) Another mode of formation involves the decomposition of surface rocks and the removal of soluble constituents, leaving a residual mass of weathered material containing ores. Bauxite is formed this way.(iv) Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals.(v) The ocean waters contain vast quantities of minerals, but most of these are too widely diffused to be of economic significance. However, common salt, magnesium and bromine are largely derived from ocean waters. The ocean beds, too, are rich in manganese nodules.Answer the following MCQs by choosing the most appropriate option.Q. The ocean beds, too, are rich in ______________ nodules.

Top Courses for Class 10

Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.Reason (R): All ores are minerals but all minerals are not ores.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer?
Question Description
Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.Reason (R): All ores are minerals but all minerals are not ores.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.Reason (R): All ores are minerals but all minerals are not ores.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.Reason (R): All ores are minerals but all minerals are not ores.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.Reason (R): All ores are minerals but all minerals are not ores.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.Reason (R): All ores are minerals but all minerals are not ores.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.Reason (R): All ores are minerals but all minerals are not ores.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.Reason (R): All ores are minerals but all minerals are not ores.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.Reason (R): All ores are minerals but all minerals are not ores.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.Reason (R): All ores are minerals but all minerals are not ores.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 10 tests.
Explore Courses for Class 10 exam

Top Courses for Class 10

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev