RBI Assistant PRE 2023 English Language Quiz
English Language is a part of almost all major competitive exams in the country and is perhaps the most scoring section also. Aspirants who regularly practice questions have a good chance of scoring well in the English Language Section. So here we are providing you with the RBI Assistant PRE 2023 English Language Quiz to help you prepare better. This RBI Assistant PRE 2023 English Language Quiz includes all of the most recent pattern-based questions, as well as Previous Year Questions. This RBI Assistant PRE 2023 English Language Quiz is available to you at no cost. Candidates will be provided with a detailed explanation of each question in this RBI Assistant PRE 2023 English Language Quiz. Candidates must practice this RBI Assistant PRE 2023 English Language Quiz to achieve a good score in the English Language Section.
Directions (1-5): Read the following passage carefully and answer the questions given below it. Certain words/phrases are given in bold to help you to locate them while answering some of the questions.
Classical physics defines the vacuum as a state of absence: a vacuum is said to exist in a region of space if there is nothing in it. In the quantum field theories that describe the physics of elementary particles, the vacuum becomes somewhat more complicated. Even in empty space, particles can appear spontaneously as a result of fluctuations of the vacuum. For example, an electron and a positron, or anti electron, can be created out of the void. Particles created in this way have only a fleeting existence; they are annihilated almost as soon as they appear, and their presence can never be detected directly. They are called virtual particles in order to distinguish them from real particles, whose lifetimes are not constrained in the same way, and which can be detected. Thus it is still possible to define that vacuum as a space that has no real particles in it.
One might expect that the vacuum would always be the state of lowest possible energy for a given region of space. If an area is initially empty and a real particle is put into it, the total energy, it seems, should be raised by at least the energy equivalent of the mass of the added particle. A surprising result of some recent theoretical investigations is that this assumption is not invariably true. There are conditions under which the introduction of a real particle of finite mass into an empty region of space can reduce the total energy. If the reduction in energy is great enough, an electron and a positron will be spontaneously created. Under these conditions the electron and positron are not a result of vacuum fluctuations but are real particles, which exist indefinitely and can be detected. In other words, under these conditions the vacuum is an unstable state and can decay into a state of lower energy; i.e., one in which real particles are created.
The essential condition for the decay of the vacuum is the presence of an intense electric field. As a result of the decay of the vacuum, the space permeated by such a field can be said to acquire an electric charge, and it can be called a charged vacuum. The particles that materialize in the space make the charge manifest. An electric field of sufficient intensity to create a charged vacuum is likely to be found in only one place: in the immediate vicinity of a super heavy atomic nucleus, one with about twice as many protons as the heaviest natural nuclei known. A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum. Experiments attempting to achieve this are now under way.
- Which of the following titles best describes the passage as a whole?
(a) The Vacuum: Its Fluctuations and Decay
(b) The Vacuum: Its Creation and Instability
(c) The Vacuum: A State of Absence
(d) Particles That Materialize in the Vacuum
(e) Classical Physics and the Vacuum
Answer & Explanation
- According to the passage, the assumption that the introduction of a real particle into a vacuum raises the total energy of that region of space has been cast into doubt by which of the following?
(a) Findings from laboratory experiments
(b) Findings from observational field experiments
(c) Accidental observations made during other experiments
(d) Discovery of several erroneous propositions in accepted theories
(e) Predictions based on theoretical work
Answer & Explanation
- It can be inferred from the passage that scientists are currently making efforts to observe which of the following events?
(a) The decay of a vacuum in the presence of virtual particles
(b) The decay of a vacuum next to a super heavy atomic nucleus
(c) The creation of a super heavy atomic nucleus next to an intense electric field
(d) The creation of a virtual electron and a virtual positron as a result of fluctuations of a vacuum
(e) The creation of a charged vacuum in which only real electrons can be created in the vacuums region of space
Answer & Explanation
- According to the passage, the author considers the reduction of energy in an empty region of space to which a real particle has been added to be
(a) a well-known process
(b) a frequent occurrence
(c) a fleeting aberration
(d) an unimportant event
(e) an unexpected outcome
Answer & Explanation
Direction (6-10): Fill the most appropriate options in blanks provided to make the sentence meaningful.
- Great saints believe that realisation of God will liberate man from ______ bondage and this state of release confers the privilege of serving the Lord in his ______ abode.
(a)materialistic, permanent
(b)earthly, transcendental
(c)primitive, unique
(d)spiritual, ethereal
(e)premiere, conscious
Answer & Explanation
- Biological clocks are of such ____ adaptive value to living organisms, that we would expect most organisms to ____ them.
(a)meager - evolve
(b)important- arise
(c)significant - eschew
(d)obvious - possess
(e) prominent, adhere
Answer & Explanation
- Before his marriage the Duke had led an austere existence and now regarded the affectionate, somewhat ____ behavior of his young wife as simply ____
(a)restrained - despicable
(b)childish – elevating
(c)playful - sublime
(d)frivolous – puerile
(e)imprudent - chldish
Answer & Explanation
- Today Wegener's theory is ____ ; however, he died an outsider treated with ____ by the scientific establishment.
(a)unsupported - approval
(b)dismissed - contempt
(c)accepted - approbation
(d)unchallenged - disdain
(e) Unprecedented- derision
Answer & Explanation
- Pipes are not a safer _____________ to cigarettes because, though pipe smokers do not inhale, they are still _____________ higher rates of lung and mouth cancers than nonsmokers.
(a) preference…free from
(b) answer…responsible for
(c) alternative…subject to
(d) rejoinder…involved in
(e) offer…involved with
Answer & Explanation
No comments:
Post a Comment