Bissoy.com
Doctors Medicines MCQs Q&A

Example of extrusive/volcanic rock is

Example of extrusive/volcanic rock is Correct Answer All of the above

Ingenious rocks which are formed on the surface of the Earth by the crystallization of magma are called Extrusive rocks. These are fine-grained textures because their rapid cooling at or near the surface did not provide enough time for large crystals to grow.
Some examples of extrusive rocks are Basalt, Rhyolite and Andesite.

Related Questions

Consider the following statements about Ashokan rock edicts :  1. Major Rock Edict XIll records Ashoka's remorse at the sufferings caused by his Kalinga campaign.  2. Major Rock Edict X records Ashoka's visit to Lumbini.  3. Major Rock Edict XII refers to Dhamma Mahamattas as a new category of officers instituted by Ashoka.  4. Major Rock Edict XII speaks about showing tolerance towards all sects. Which of the statements given above are correct?
Which one of the following four addresses is NOT EXACTLY the same as the one given below? Adirondack Rock & River Guide Service, Inc. P.O. Box 219 Keene, New York 12942 (518) 576­ - 2041 (i) Adirondack Rock & River Guide Service, Inc. P.O. Box 219 Keene, New York 12942 (518) 576­ - 2041 (ii) Adironduck Rock & River Guide Serivce, Inc. P.O. Box 219 Keene, New York 12942 (518) 576 - ­2041  (iii) Adirondack Rock & River Guide Service, Inc. P.O. Box 219 Keene, New York 12942 (518) 576 - ­2041 (iv) Adirondack Rock & River Guide Service, Inc. P.O. Box 219 Keene, New York 12942 (518) 576 - ­2041 
Which of the following rocks are found in Bihar - I.   Dharwad rock II.  Vindhyan rock III. Tertiary rock IV. Quaternary rock
Quartz sand is an example of polymineralic rock while granite is an example of a monomineralic rock.
In a certain code language, 'bart il arn' means 'thrills and frills', 'hed mik' ain means 'diamonds are forever', 'ad ket hed' means 'hard as diamonds', 'lim arn kelt' means 'rock music thrills', 'ket kelt lim' means 'hard rock music'. Which is the code for the word 'rock' in that code language?
In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1. Over millions of years, the Colorado River wore away rocks as it passed through the area. P. Each layer of rock has a different depth and color. Q. The canyon is made of layers of rock. R. Slowly, the river made the path deeper and deeper.  S. Now, the canyon is surrounded by steep walls on either sides. 6. Geologists have identified almost 40 different layers of rock exposed by the river’s erosion.
In the following question given below are some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. All stone are rock. II. All stone are brick.  Conclusion: I. All rock being stone is a possibility. II. All brick are rock.
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: Some rock-stars are producers. All producers are designers. All workers are producers. Conclusions: I. Some rock-stars are designers. II. All workers are designers. III. No worker is a rock-star.
With reference to the history of Indian rock-cut architecture, consider the following statements: 1. The caves at Badami are the oldest surviving rock-cut caves in India. 2. The Barabar rock-cut caves were originally made for Ajivikas by Emperor Chandragupta Maurya. 3. At ellora, caves were made for different faiths. Which of the statements given above is/are correct?
Assertion A: When rock conditions are favorable, it will not be necessary to take up concrete lining concurrently with the driving operations till the full length of the tunnel has been driven through rock.Reason R: A tunnel through rock, hard or soft, does not need any concrete liningSelect your answer based on the coding system given below: