IGNOU BSCFBC BGYCT 135 SOLVED ASSIGNMENT

BGYCT 135 Solved Assignment

BGYCT 135: Petrology

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Title Name IGNOU BSCFBC BGYCT 135 SOLVED ASSIGNMENT
Type Soft Copy (E-Assignment) .pdf
University IGNOU
Degree BACHELOR DEGREE PROGRAMMES
Course Code BSCFBC
Course Name Bachelor of Science (Biochemistry)
Subject Code BGYCT 135
Subject Name Petrology
Year 2026
Session -
Language English Medium
Assignment Code BGYCT 135/Assignment-1/2026
Product Description Assignment of BSCFBC (Bachelor of Science (Biochemistry)) 2026. Latest BGYCT 135 2026 Solved Assignment Solutions
Last Date of IGNOU Assignment Submission Last Date of Submission of IGNOU BEGC-131 (BAG) 2025-26 Assignment is for January 2026 Session: 30th September, 2026 (for December 2025 Term End Exam).

Semester Wise
January 2025 Session: 30th March, 2026 (for June 2026 Term End Exam).
July 2025 Session: 30th September, 2025 (for December 2025 Term End Exam).
FormatReady-to-Print PDF (.soft copy)

📅 Important Submission Dates

  • January 2026 Session: 31st March, 2026
  • July 2026 Session: 30th September, 2026
  • January 2026 Session: 31st March, 2026
  • July 2026 Session: 30th September, 2026

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BGYCT 135 2025 - English

Tutor Marked Assignment

PETROLOGY

Course Code: BGYCT-135

Assignment Code: BGYCT-135/TMA/2021-2025

Maximum Marks: 100

Note: Attempt all questions. The marks for each question are indicated against it. Write all answers in your own words; do not copy from the course material.

Part A

1.Write short notes on the following:

a) Rock cycle

b) Tabular classification of igneous rocks

2. Discuss different types of structures found in igneous rocks with the help of neat well labelled diagrams.

3. Explain crystallisation behaviour of binary system with complete solid solution of two end members with the help of neat well labelled diagrams.

4. Describe the megascopic and microscopic characters of gabbro and basalt with help of neat well labelled diagrams.

5 Discuss role of Bowen's reaction series in the differentiation of igneous rocks.

Part B

6. Describe different types of secondary sedimentary structures with the help of neat well labelled diagrams.

7. Differentiate the following:

a) Extrusive and intrusive igneous rocks

b) Non-clastic and clastic rocks

8. Explain the factors affecting metamorphism, in detail.

9. Explain different types of structures found in metamorphic rocks with help of neat well labelled diagrams.

10. Discuss the megascopic and microscopic characters of following rocks:

a) Quartzite

b) Sandstone


BGYCT 135 (January 2026 - July 2026) - ENGLISH

Tutor Marked Assignment

PETROLOGY

Course Code: BGYCT-135

Assignment Code: BGYCT-135/TMA/2026

Maximum Marks: 100

Note: *Attempt all questions. The marks for each question are indicated against it. Write all answers in your own words; do not copy from the course material.

*Write the answers in about 250 words for 5 marks questions and not exceeding 500 words for 10 marks questions.

Part A

1. Write short notes on the following:

a) Crystallisation Behaviour of H2O System

b) Tabular classification of igneous rocks

2. Discuss the different types of textures found in igneous rocks with the help of neat well labelled diagrams.

3. Explain the chemical and mineralogical composition of magma in detail.

4. Discuss the megascopic and microscopic characters of rhyolite with the help of neat well labelled diagrams.

5 Discuss the megascopic and microscopic characters of gabbro with the help of neat well labelled diagrams.

Part B

6. Discuss the classification of sedimentary rocks based on size and shape of grains.

7. Explain the concept of metamorphic facies.

8. Discuss the factors that affect metamorphism.

9. Write short notes on:

a) Particle morphology

b) Packing of grains

c) Regional metamorphism

d) Palimpsest texture


BGYCT 135 2025 - Hindi

सत्रीय कार्य

शैलविज्ञान

पाठ्यक्रम कोड: BGYCT-135 

सत्रीय कार्य कोड: BGYCT-135/MA/2021-2025 

कुल अंक : 100

नोट: सभी प्रश्न हल करें। प्रत्येक प्रश्न के आगे उसके अंक दर्शाए गए हैं। सभी उत्तर अपने शब्दों में लिखें; पाठ्यक्रम सामग्री से कॉपी न करें।

Part A

1. निम्नलिखित पर संक्षिप्त टिप्पणियां लिखें :

a) शैल चक्र 

b) आग्नेय शैलों का सारणीय वर्गीकरण 

2. आग्नेय शैलों में पाये जाने वाली विभिन्न प्रकार की संरचनाओं को स्पष्ट रेखांकित आरेखों की सहायता से समझाइए।

3. दो अंतिम सदस्यों के पूर्ण ठोस विलयन के साथ प्रणाली के क्रिस्टलीकरण व्यवहार की स्पष्ट रेखांकित आरेखों की सहायता से व्याख्या करें।

4. स्पष्ट रेखांकित आरेखों की सहायता से गैब्रो तथा बेसाल्ट के स्थूल तथा सूक्ष्मदर्शीय लक्षणों की विवेचना कीजिए।

5. आग्नेय शैलों के विभेदन में बॉवेन अभिक्रिया श्रृंखला की भूमिका की चर्चा कीजिए।

part B 

6. अवसादी शैलों में पाये जाने वाली विभिन्न प्रकार की द्वितीयक संरचनाओं का स्पष्ट रेखांकित आरेखों की सहायता से वर्णन कीजिए।

7. निम्नलिखित में अंतर स्पष्ट कीजिए :

a) अंतर्वैदिक और बहुवैदिक आग्नेय शैलें 

b) अखंडाश्म तथा खंडाश्म अवसादी शैल 

8. कायांतरण को प्रभावित करने वाले कारकों की विस्तारपूर्वक व्याख्या कीजिए।

9. कायांतरित शैलों में पाये जाने वाले विभिन्न प्रकार की संरचनाओं को स्पष्ट रेखांकित आरेखों की मदद से समझाइए।

10 निम्नलिखित शैलो के स्थूल तथा सूक्ष्मदर्शीय लक्षणों की व्याख्या कीजिए :

a) संगमरमर

b) बालुकाश्म


BGYCT 135 (January 2026 - July 2026) - HINDI

सत्रीय कार्य शैलविज्ञान

पाठ्यक्रम कोड: बीजीवाइक्ट-135

सत्रीय कार्य कोड: बीजीवाइक्ट-135/त्मा/2026

कुल अंक : 100

नोट: सभी प्रश्न हल करें। प्रत्येक प्रश्न के आगे उसके अंक दर्शाए गए हैं। सभी उत्तर अपने शब्दों में लिखें; पाठ्यक्रम सामग्री से कॉपी न करें।

* 5 अंक वाले प्रश्नों के उत्तर लगभग 250 शब्दों में और 10 अंकों के प्रश्नों के उत्तर 500 शब्दों से अधिक न लिखें।

भाग ए

1. निम्नलिखित पर संक्षिप्त टिप्पणियां लिखें :

a) सीओ2 प्रणाली की क्रिस्टलीकरण प्रकृति

b) आग्नेय शैलों का सारणीय वर्गीकरण

. आग्नेय शैलों में पाये जाने वाले विभिन्न प्रकार के गठनों को स्पष्ट रेखांकित आरेखों की  सहायता से समझाइए ।

3. मैग्मा के रासायनिक और खनिज संघटनों को विस्तार से व्याख्या कीजिए। 

4. स्पष्ट आरेखों की सहायता से रायोलाइट के स्थूल तथा सूक्ष्मदर्शीय लक्षणों की विवेचना  कीजिए।

5. स्पष्ट आरेखों की सहायता से गैब्रो के स्थूल तथा सूक्ष्मदर्शीय लक्षणों की विवेचना कीजिए। 

भाग बी

6. कणों के आकार और आकृति के आधार पर अवसादी शैलों के वर्गीकरण पर चर्चा कीजिए। 

7. कायांतरित संलक्षणी की अवधारणा को समझाइए।

8. कायातंरण को प्रभावित करने वाले घटकों को व्याख्या करे।

9. निम्नलिखित पर संक्षिप्त टिप्पणियां लिखें:

a) कण आकारिकी

b) कणों का संकुलन

c) प्रादेशिक कायांतरण

d) मूलावशेषी गठन

 

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