CSS English MCQS with Answers
(1) they contain no fossils
(2) they have no regular arrangement of layers
(3) they are nearly always made up of crystals.
Sedimentary rocks are composed largely of minute fragments derived from the disintegration of existing rocks and in some instances from the remains of animal As sediments are transported.Individual fragments are assorted according to size.Distinct layers of such sediments as gravels,sand,and clay build up as they are deposited by water and occasionally wind.These sediments vary in size with the material and the power of the eroding agent.Sedimentary materials are laid down in layers called strata.
When sediments harden into sedimentary rocks,the names applied to them change to indicate the change in physical state.Thus,small stones and gravel cemented together are known as conglomerates;cemented sand becomes sandstone;and hardened clay becomes shale.In addition to these,Other sedimentary rocks such as limestone frequently result from the deposition of dissolved material.The ingredient parts are normally precipitated by organic substance such as shells of clams or hard skeletons of other marine life.
Both igneous and sedimentary rocks may be changed by pressure,heat,solution,or cementing action.When individual grains from existing rocks tend to deform and interlock they are called metamorphic rocks.For example granite,an igneous rock,may be metamorphosed into a gneiss or a schist.Limestone,a sedimentary rock,when subjected to heat and pressure may become marble,a metamorphic rock.Shale under pressure becomes slate.
The relationship between igneous and sedimentary rocks may best be compared to the relationship between.
The hydrosphere has strange characteristics because water has properties unlike those of any other liquid.One anomaly is that water upon freezing expands by about 9 per cent,whereas most liquids contract on cooling.for this reason,ice floats on water bodies instead of sinking to the bottom.If the ice sank,the hydrosphere would soon be frozen solidly except for a thin layer of surface melt water during the summer season,Thus,all aquatic life would be destroyed and the interchange of warm cold currents,which moderates climate,would be notably absent.<
Another outstanding characteristic of water is that water has a heat capacity which is the highest of all liquids and solids except ammonia.This characteristic enables the oceans to absorb and store vast quantities of heat,thereby often preventing climatic extremes in addition water dissolve more substances than any other liquid.It is this characteristic which helps make oceans a great storehouse for minerals which have been washed down from the continents.In several areas of the world these minerals are being commercially exploited.Solar evaporation of salt is widely practised,potash is extracted from the Dead Sea,and magnesium is produced from sea water along the American Gulf Coast.
According to the passage,fish can survive in the oceans because
Which of the following words could best be substituted for “homologous” in passage without substantially changing the author’s meaning?
(1) they contain no fossils
(2) they have no regular arrangement of layers
(3) they are nearly always made up of crystals.
Sedimentary rocks are composed largely of minute fragments derived from the disintegration of existing rocks and in some instances from the remains of animal As sediments are transported.Individual fragments are assorted according to size.Distinct layers of such sediments as gravels,sand,and clay build up as they are deposited by water and occasionally wind.These sediments vary in size with the material and the power of the eroding agent.Sedimentary materials are laid down in layers called strata.
When sediments harden into sedimentary rocks,the names applied to them change to indicate the change in physical state.Thus,small stones and gravel cemented together are known as conglomerates;cemented sand becomes sandstone;and hardened clay becomes shale.In addition to these,Other sedimentary rocks such as limestone frequently result from the deposition of dissolved material.The ingredient parts are normally precipitated by organic substance such as shells of clams or hard skeletons of other marine life.
Both igneous and sedimentary rocks may be changed by pressure,heat,solution,or cementing action.When individual grains from existing rocks tend to deform and interlock they are called metamorphic rocks.For example granite,an igneous rock,may be metamorphosed into a gneiss or a schist.Limestone,a sedimentary rock,when subjected to heat and pressure may become marble,a metamorphic rock.Shale under pressure becomes slate.
Which of the following methods is NOT used by the author?
The hydrosphere has strange characteristics because water has properties unlike those of any other liquid.One anomaly is that water upon freezing expands by about 9 per cent,whereas most liquids contract on cooling.for this reason,ice floats on water bodies instead of sinking to the bottom.If the ice sank,the hydrosphere would soon be frozen solidly except for a thin layer of surface melt water during the summer season,Thus,all aquatic life would be destroyed and the interchange of warm cold currents,which moderates climate,would be notably absent.<
Another outstanding characteristic of water is that water has a heat capacity which is the highest of all liquids and solids except ammonia.This characteristic enables the oceans to absorb and store vast quantities of heat,thereby often preventing climatic extremes in addition water dissolve more substances than any other liquid.It is this characteristic which helps make oceans a great storehouse for minerals which have been washed down from the continents.In several areas of the world these minerals are being commercially exploited.Solar evaporation of salt is widely practised,potash is extracted from the Dead Sea,and magnesium is produced from sea water along the American Gulf Coast.
According to the passage the hydrosphere is NOT
The adaptation of mammals to almost all possible modes of life parallels that of the reptiles in Mesozoic time,and except for greater intelligence,the mammals do not seem to have done much better than corresponding reptilian forms.The bat is doubtless a better flying animal than the pterosaur,but the dolphin horse and the antelope must excel any of the dinosaurs.The tyrannosaur was a more ponderous and powerful carnivore than any flesh-eating mammal,but the lion or tiger is probably a more efficient and dangerous beast of prey because of a superior brain.The significant point to observe is that different branches of the mammals gradually fitted themselves for all sorts of life,grazing on the plains and able to run swiftly (horse,deer,bison).living in rivers and swamps (hippopotamus,beaver),dwelling in trees (sloth,monkey) digging underground (mole,rodent),feeding on flesh in the forest (tiger) and on the plain (wolf),swimming in the sea (dolphin,whale,seal) and flying in the air (bat).Man is able by mechanical means to conquer the physical world and to adapt himself to almost any set of conditions.
This adaptation produces gradual changes of from and structure.It is biologically characteristic of the youthful,plastic stage of a group.Early in its career,an animal assemblage seems to possess capacity for change,which,as the unit becomes old and fixed disappears.The generalised types of organisms retain longest the ability to make adjustments when required,and it is from them that new,fecund stocks take origin – certianly not from any specialised end-products.So,in the mammals we witness the birth plastic spread in many directions,increasing specialisation,and in some branches,the extinction which we have learned from observation of the geologic record of life is a characteristic of the evolution of life.
According to the passage,the greatest number of forms of mammalian life is found in the
In this search for energy the fungus has become the earth’s major source of not and decay.Wherever you see mold forming on a piece of bread,or a pile of leaves turning to compost,or a blown-down tree becoming pulp on the ground,you are watching a fungus eating.Without fungus action the earth would be piled high with the dead plant life of past centuries.In fact,certain plants which contain resins that are toxic to fungi will last indefinitely;specimens of the redwood,for instance,can still be found resting on the forest floor centuries after having been blown down.
The author is primarily concerned with?
How are horses’ legs related to seals’flippers?
The adaptation of mammals to almost all possible modes of life parallels that of the reptiles in Mesozoic time,and except for greater intelligence,the mammals do not seem to have done much better than corresponding reptilian forms.The bat is doubtless a better flying animal than the pterosaur,but the dolphin horse and the antelope must excel any of the dinosaurs.The tyrannosaur was a more ponderous and powerful carnivore than any flesh-eating mammal,but the lion or tiger is probably a more efficient and dangerous beast of prey because of a superior brain.The significant point to observe is that different branches of the mammals gradually fitted themselves for all sorts of life,grazing on the plains and able to run swiftly (horse,deer,bison).living in rivers and swamps (hippopotamus,beaver),dwelling in trees (sloth,monkey) digging underground (mole,rodent),feeding on flesh in the forest (tiger) and on the plain (wolf),swimming in the sea (dolphin,whale,seal) and flying in the air (bat).Man is able by mechanical means to conquer the physical world and to adapt himself to almost any set of conditions.
This adaptation produces gradual changes of from and structure.It is biologically characteristic of the youthful,plastic stage of a group.Early in its career,an animal assemblage seems to possess capacity for change,which,as the unit becomes old and fixed disappears.The generalised types of organisms retain longest the ability to make adjustments when required,and it is from them that new,fecund stocks take origin – certianly not from any specialised end-products.So,in the mammals we witness the birth plastic spread in many directions,increasing specialisation,and in some branches,the extinction which we have learned from observation of the geologic record of life is a characteristic of the evolution of life.
It can inferred from the passage that the pterosaur
The author’s style can best be described as
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