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Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above?
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Consider the following statements : 1 ) Igneous rocks do not contain f...
Introduction:
In this question, we are given three statements related to igneous rocks. We need to identify the incorrect statement(s) among them.
Incorrect statements:
To determine the incorrect statement(s), let's analyze each statement one by one.
1) Igneous rocks do not contain fossils in them:
- Igneous rocks are formed from solidification of molten material called magma or lava. During this process, the molten material cools down and solidifies rapidly, leaving no time for the formation of fossils.
- Fossils are the preserved remains or traces of past living organisms. Since igneous rocks are formed through volcanic activity, they do not contain fossils. Fossils are more commonly found in sedimentary rocks.
- Therefore, the statement is correct.
2) Silica is present in large quantities in Granite which gives it a light color:
- Granite is a common type of igneous rock that contains a high proportion of silica. Silica is a compound made up of silicon and oxygen.
- The presence of silica in large quantities in granite gives it a light color. Silica minerals, such as quartz, are usually light-colored and contribute to the overall color of granite.
- Therefore, the statement is correct.
3) Igneous rocks with a high proportion of silica in them are acidic in nature:
- Igneous rocks are classified into two main types based on their silica content: acidic (or felsic) and basic (or mafic).
- Acidic igneous rocks have a high proportion of silica (more than 65%) and are rich in minerals like quartz and feldspar. They are generally light-colored.
- Basic igneous rocks, on the other hand, have a lower proportion of silica (less than 52%) and are rich in minerals like olivine and pyroxene. They are generally dark-colored.
- Therefore, the statement is correct.
Conclusion:
After analyzing each statement, we find that all the given statements are correct. Therefore, the incorrect option is (D) All of the above.
In this question, we are given three statements related to igneous rocks. We need to identify the incorrect statement(s) among them.
Incorrect statements:
To determine the incorrect statement(s), let's analyze each statement one by one.
1) Igneous rocks do not contain fossils in them:
- Igneous rocks are formed from solidification of molten material called magma or lava. During this process, the molten material cools down and solidifies rapidly, leaving no time for the formation of fossils.
- Fossils are the preserved remains or traces of past living organisms. Since igneous rocks are formed through volcanic activity, they do not contain fossils. Fossils are more commonly found in sedimentary rocks.
- Therefore, the statement is correct.
2) Silica is present in large quantities in Granite which gives it a light color:
- Granite is a common type of igneous rock that contains a high proportion of silica. Silica is a compound made up of silicon and oxygen.
- The presence of silica in large quantities in granite gives it a light color. Silica minerals, such as quartz, are usually light-colored and contribute to the overall color of granite.
- Therefore, the statement is correct.
3) Igneous rocks with a high proportion of silica in them are acidic in nature:
- Igneous rocks are classified into two main types based on their silica content: acidic (or felsic) and basic (or mafic).
- Acidic igneous rocks have a high proportion of silica (more than 65%) and are rich in minerals like quartz and feldspar. They are generally light-colored.
- Basic igneous rocks, on the other hand, have a lower proportion of silica (less than 52%) and are rich in minerals like olivine and pyroxene. They are generally dark-colored.
- Therefore, the statement is correct.
Conclusion:
After analyzing each statement, we find that all the given statements are correct. Therefore, the incorrect option is (D) All of the above.
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Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above?
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Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above?.
Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above?.
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Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above?, a detailed solution for Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above? has been provided alongside types of Consider the following statements : 1 ) Igneous rocks do not contain fossils in them . 2 ) Silica is present in large quantities in Granite which gives it a light colour . 3 ) Igneous rocks with a high proportion of silica in them are acidic in nature . Which of the statements given above is / are incorrect ? A) 1 and 2 only B) 2 only C) 1 and 3 only D) All of the above? theory, EduRev gives you an
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