Home
Favourites
Contact
Blog
Hindu Reviews
Q & A

Download App

Search Questions

Search

Comprehension: (76-80) Read the following information carefully and answer the given questions. Cave, also called cavern, natural opening in the earth large enough for human exploration. Such a cavity is formed in many types of rock and by many processes. The largest and most common caves are those formed by chemical reaction between circulating groundwater and bedrock composed of limestone or dolomite. These caves, called solution caves, typically constitute a component of what is known as karst terrain. Named after the Karst region of the western Balkan Peninsula extending from Slovenia to Montenegro, karst terrain in general is characterized by a rough and jumbled landscape of bare bedrock ledges, deranged surface drainage, and sinkholes, as well as caves. It should be noted, however, that there is considerable variation among karst areas. Some may have dramatic surface landforms but few caves do not. By contrast, others may have extensive cave development with little surface expression; for example, the Guadalupe Mountains of New Mexico, the site of Carlsbad Caverns and various other caves, have very few surface karst features. Karst landscapes are formed by the removal of bedrock (composed in most cases of limestone, dolomite, gypsum, or salt, but in some cases of such normally insoluble rocks as quartzite and granite) in solution through underground routes rather than through surface weathering and surface streams. As a result, much karst drainage is internal. Rainfall flows into closed depressions and down their drains. Further dissolution in the subsurface forms continuous conduits that serve as integrated drains for the rapid movement of underground water. The outlets for the water-carrying conduits often are springs of majestic size. Caves are fragments of such conduit systems, and some of them provide access to active streams. These caves may be completely water-filled; others are dry passages left behind by streams that cut to lower levels. Surface streams flowing from areas underlain by insoluble rock often sink when they reach the border of a karst region. These sinking streams form tributaries of the underground drainage system. Not all caves are part of karst landscapes. A substantial number of relatively small caves, called volcanic caves, are formed in lava and by the mechanical movement of bedrock. Other caves are formed in glaciers by the melting of ice. Still others are reated by the erosive action of water and wind or from the debris of erosive processes; these are sea caves, eolian caves, rock shelters, and talus caves. According to the passage, which of the following statement is correct?

उत्तर प्रदेश में, _______ में ‘कृषि कुम्भ 2018’ का आयोजन किया गया था।

The stadia markings are made on –

शबरीनारायण मेला निम्नलिखित में से किस राज्य में आयोजित किया जाता है?

The selling price of a pen is 660. If the profit is 20%, then what is the nominal profit earned on the sale of the pen.

Who was the founder of Vakataka dynasty in the third century ?

If the ambient temperature is higher than the calibrated temperature of the tape, which of the following errors is it likely to show ?

Nepal's first Transnational Petrol pipeline starts from which place is Bihar ? नेपाल की प्रथम बहुराष्ट्रीय पेट्रोल पाइपलाइन बिहार में कहाँ से प्रारम्भ होती है?

In the following question, out of the four alternative, select the alternative which is the best substitute of the phrase. Eating mud

Q: What is the unit of refractive index?

A. m⁻¹

B. Dioptre

C. No unit

D. m/s

Correct Answer: Option C - There is no SI Unit for refractive index. The refractive index is defined as the ratio between the speed of light in a vacuum and its speed in a particular medium.

C. There is no SI Unit for refractive index. The refractive index is defined as the ratio between the speed of light in a vacuum and its speed in a particular medium.

Explanations:

There is no SI Unit for refractive index. The refractive index is defined as the ratio between the speed of light in a vacuum and its speed in a particular medium.

Download Our App

Download our app to know more Lorem ipsum dolor sit amet consectetur adipisicing elit. Excepturi, esse.

YOU ARE NOT LOGIN

Unlocking possibilities: Login required for a world of personalized experiences.

Address

12, Church Ln, The Adelphi, Allen Ganj, Prayagraj, Uttar Pradesh 211002

+91 9554973128

Address

info.yctbooks@gmail.com

Link's

Home

Favourites

Contact

Download Our App