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বাংলা
Which of the following is an extrusive or volcanic igneous rock?
নিচের কোনটি একটি বহিঃসৃত বা আগ্নেয়গিরিজাত আগ্নেয় শিলা?
Practice MCQ for SSC, UPSC, RRB Exams
A. Granite
A. গ্রানাইট
B. Basalt
B. ব্যাসল্ট
C. Gneiss
C. নিস
D. Slate
D. স্লেট
Correct Answer: B
সঠিক উত্তর: B
Explanation
ব্যাখ্যা
The volcanic igneous rock is
Basalt
.
Key Details:
Igneous rocks are classified into two main types:
1. Intrusive (Plutonic) Igneous Rocks:
Formed below the Earth's surface
from slowly cooling magma.
Slow cooling leads to large, visible crystals
.
Examples: Granite, Gabbro
.
2. Extrusive (Volcanic) Igneous Rocks:
Formed on the Earth's surface
from rapidly cooling lava.
Rapid cooling results in fine-grained or glassy texture
.
Examples: Basalt, Obsidian
.
Basalt is an extrusive igneous rock
, hence it is the correct answer.
Granite is intrusive, while Gneiss and Slate are metamorphic rocks
.
আগ্নেয় শিলা হলো
ব্যাসল্ট
।
মূল বিবরণ:
আগ্নেয় শিলা প্রধানত দুই প্রকার:
1. অন্তর্গত আগ্নেয় শিলা:
ভূগর্ভে ম্যাগমা ধীরে শীতল হয়ে গঠিত হয়
।
এতে বড় বড় স্ফটিক দেখা যায়
।
উদাহরণ: গ্রানাইট, গ্যাব্রো
।
2. বহির্গত আগ্নেয় শিলা:
পৃথিবীর পৃষ্ঠে লাভা দ্রুত শীতল হয়ে গঠিত হয়
।
এতে সূক্ষ্ম দানাযুক্ত বা কাচের মতো গঠন দেখা যায়
।
উদাহরণ: ব্যাসল্ট, অবসিডিয়ান
।
ব্যাসল্ট একটি বহির্গত আগ্নেয় শিলা
।
গ্রানাইট অন্তর্গত এবং নিস ও স্লেট রূপান্তরিত শিলা
।
Related Questions
সম্পর্কিত প্রশ্ন
Which geological process is primarily responsible for transforming existing rock into a metamorphic rock?
A rock formed from the cooling and solidification of lava or magma is classified as:
What is the primary characteristic that distinguishes an intrusive igneous rock from an extrusive igneous rock?
The primary component of the sedimentary rock Limestone is the mineral:
Which of the following is a foliated metamorphic rock characterized by distinct layers or banding of minerals?
Which of the following is an example of an igneous rock?
Which of the following is a sedimentary rock?
Marble is formed by the metamorphism of:
Which rock is the primary source of fossil fuels like coal?
Which process is responsible for the formation of sedimentary rocks?
Which of the following is a metamorphic rock?
Which type of rock makes up the majority of the Earth’s crust?
Quartzite is formed from which of the following:
Which rock is formed by metamorphism of coal?
Gneiss is formed by the metamorphism of:
Which sedimentary rock forms from clay particles?
Which rock has vesicular texture due to gas bubbles?
Coal is classified as which of the following types of rock?
Dolomite is a:
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