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Objective Questions

Latest CTET Social Science Exam Question (Objective Questions), MCQ in Hindi

Subjects : Child Development & Pedagogy, English Language, Hindi Language, Social Studies & Science

Question Bank CTET Paper 2 Social Science Exam - Hindi
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Child Development & Pedagogy

प्रश्न 1Single Answer
अभिकथन (A) : बच्चों के शारीरिक विकास में देरी लिए पूरी तरह से उनकी आनुवंशिक बनावट को जिम्मेदार ठहराया जा सकता है ।
तर्क (R) : बच्चों के शारीरिक विकास के लिए वंशानुगत कारक ही उत्तरदायी होते हैं ।
सही विकल्प चुने :
  1. A
    (A) और (R) दोनों सही है और (R) सही व्याख्या करता है (A) की
  2. B
    और (R) दोनों सही है लेकिन (R) सही व्याख्या नहीं है (A) की
  3. C
    सही है लेकिन (R) गलत है
  4. D
    और (R) दोनो गलत है
प्रश्न 2Single Answer
इनमें से कौनसा बच्चा मध्य बाल्यावस्था में होगा ?
  1. A
    एक बच्चा जो सामाजिक भूमिकाओं की नकल करना शुरू कर रहा है काल्पनिक खेल के दौरान
  2. B
    एक बच्चा जिसने नियमों के अर्थ की समझ विकसित कर ली है और तर्क कर सकता है
  3. C
    बच्चा जो संभावित कारणों की परिकल्पना कर सकता है और तद्नुसार जटिल प्रयोगों की योजना बना सकता है
  4. D
    एक बच्चा जो अभी स्थूल कौशल दिखाना शुरू कर रहा है जैसे कि एक पेंसिल और ऐसी अन्य वस्तुओं को पकड़ना
प्रश्न 3Single Answer
कथन (A) : बच्चों व बचपन की संकल्पना सार्वभौमिक नहीं हो सकती ।
तर्क (R) : बच्चों व बचपन की समझ में उनक सामाजिक सांस्कृतिक परिवेश की कोई भूमिका नहीं है
सही विकल्प चुने :
  1. A
    (A) और (R) दोनों सही है और (R) सही व्याख्या करता है (A) की
  2. B
    (A) और (R) दोनों सही है लेकिन (R) सही व्याख्या नहीं है (A) की
  3. C
    (A) सही है लेकिन (R) गलत है
  4. D
    (A) और (R) दोनो गलत है
प्रश्न 4Single Answer
बच्चों के विकास के संदर्भ में कौन सा कथन सही है ?
  1. A
    विकास पूर्ण रूप से आनुवशिकता से निर्धारित है
  2. B
    विकास पूर्ण रूप से पर्यावरण द्वारा निर्धारित होता है
  3. C
    विकास में दोनों आनुवंशिकता व पर्यावरण की अन्योन्य क्रियात्मक भूमिका है
  4. D
    तीन - चौथाई लक्षण जन्मजात होते हैं तथा बाकी पर्यावरण द्वारा निर्धारित होते हैं
प्रश्न 5Single Answer
बाल्यावस्था से क्या अभिप्राय है ?
  1. A
    यह एक सामाजिक संरचना है
  2. B
    यह एक शारीरिक संरचना है
  3. C
    यह बच्चे के जनम से लेकर उसके विद्यालय जाना शुरू करने तक की अवधि का अभिलक्षित करने वाला चरण है
  4. D
    यह विकास की वह अवधि है, जिसमें सिर्फ मात्रात्मक परिवर्तन होते हैं
प्रश्न 6Single Answer
बाल विकास के समकालीन परिप्रेक्ष्य :
  1. A
    बच्चे को एक जैविक प्रवर्ग के रूप में देखते हैं
  2. B
    बच्चे को एक दैहिक सत्व के रूप में देखते हैं
  3. C
    बाल्वयावस्था को विशिष्ट चरणों में विभाजित मानते हैं
  4. D
    बाल्यावस्था को एक विशिष्ट सांस्कृतिक एवं सामाजिक संरचना मानते हैं
प्रश्न 7Single Answer
निम्नलिखित वाक्यों में कौन - सा विकास के विषय में सही नहीं है ?
  1. A
    विकास बहुआयामी एवं बहुमुखी होता है
  2. B
    सांस्कृतिक परिवर्तन से विकास प्रभावित नहीं होता
  3. C
    विकास जीवन पर्यन्त परिवर्तन की प्रक्रिया है
  4. D
    विकास सुनिश्चित पूर्व निर्धारित रीति से होता है
प्रश्न 8Single Answer
अधिगम के संदर्भ में निम्नलिखित में से कौन - सा कथन सही है ?
  1. A
    छात्र सबसे अच्छा तब सीखते हैं, जब वे सांस्कृतिक रूप से अप्रासंगिक गतिविधियों में भाग लेते हैं
  2. B
    सार्थक गतिविधियों में भाग लेने पर छात्र सबसे अच्छा सीखते हैं
  3. C
    छात्र सबसे कम तब सीखते हैं, जब वे सांस्कृतिक रूप से प्रासंगिक गतिविधियों में भाग लेते हैं
  4. D
    विद्यार्थी सबसे कम सीखते हैं, जब वे सार्थक गतिविधियों में भाग लेते हैं
प्रश्न 9Single Answer
निम्नलिखित में से कौन - सा कथन सही नहीं है ?
  1. A
    विकास क्रमबद्ध व व्यवस्थित होता है
  2. B
    विकास केवल आनुवंशिकता से प्रभावित होता है
  3. C
    विकास के सभी क्षेत्र एक - दूसरे पर निर्भर हैं
  4. D
    विकास की गति व्यक्तिगत होती है
प्रश्न 10Single Answer
भाषा अर्जन के सन्दर्भ में निम्नलिखित में से कौन - सा चरण संवेदनशील है ?
  1. A
    जन्मपूर्व अवस्था
  2. B
    प्रारंभिक बाल्यावस्था
  3. C
    किशोरावस्था
  4. D
    वयस्क अवस्था
प्रश्न 11Single Answer
इनमें से कौन - सी बच्ची मध्य बाल्यावस्था में होगी ?
  1. A
    एक बच्ची जिसने अभी सामाजिक संदर्भों में नकल सीखना शुरू किया है
  2. B
    एक बच्ची जो अमूर्त विचारों का आसानी से पालन कर सकती है
  3. C
    एक बच्ची जो सकारात्मक खेलों में शामिल नही हो सकती
  4. D
    एक बच्ची जो तार्किक रूप से तर्क कर सकती है और संरक्षण कर पाती है
प्रश्न 12Single Answer
निम्नलिखित में से कौन - सा युग्म सही मिलान है ?
  1. A
    शैशवावस्था में बच्चा - तर्क को लागू करना है और अनुमान लगाने में सक्षम होता है
  2. B
    पूर्व संक्रियात्मक अवस्था में बच्चा - निगमानात्मक व तार्किक सोच प्रारंभ हो जाती है
  3. C
    मूर्त संक्रियात्मक अवस्था में बच्चा - वर्गीकरण व संरक्षण कर पाता है
  4. D
    अमूर्त संक्रियात्मक अवस्था में बच्चा - अनुकरण की शुरुआत, कल्पनात्मक खेल करना शुरू करता है
प्रश्न 13Single Answer
बच्चों के विकास का क्रम -
  1. A
    अमूर्त से मूर्त की तरफ होता है
  2. B
    सामान्य से विशिष्ट की ओर होता है
  3. C
    पैरों से सिर की ओर होता है
  4. D
    हाथ - पैर से केंद्र की ओर होता है
प्रश्न 14Single Answer
2 वर्ष से 6 वर्ष की अवधि को क्या कहा जाता है ?
  1. A
    शैशवावस्था
  2. B
    प्रारम्भिक बचपन
  3. C
    मध्य बचपन
  4. D
    किशोरावस्था
प्रश्न 15Single Answer
अधिगम को प्रभावित करने वाला निम्नलिखित में से कौन - सा कारक पर्यावरणीय कारक है ?
  1. A
    रवैया
  2. B
    प्रेरणा
  3. C
    व्यक्तित्व लक्षण
  4. D
    विद्यालय
प्रश्न 16Single Answer
बच्चों के संदर्भ में विकास के अंतर्गत ............... आते हैं ।
  1. A
    केवल गुणात्मक परिवर्तन
  2. B
    केवल मात्रात्मक परिवर्तन
  3. C
    गुणात्मक एवं मात्रात्मक परिवर्तन दोनों
  4. D
    न ही गुणात्मक और न ही मात्रात्मक परिवर्तन
प्रश्न 17Single Answer
विकास के विषय में सही वक्तव्य चुनिये ।
  1. A
    विकास एक दिशा की ओर एक आयामी होता है
  2. B
    विकास परिवर्तनीय है
  3. C
    विकास पूर्ण रूप से आनुवंशिकता से योजनाबद्ध है
  4. D
    सभी व्यक्ति एक ही आयु और गति से विकास के पड़ावों को प्राप्त करते हैं
प्रश्न 18Single Answer
बच्चों का विकास इनमें से किसका परिणाम है ?
  1. A
    केवल आनुवंशिकता का
  2. B
    केवल वातावरण का
  3. C
    विद्यालय और शिक्षा का
  4. D
    आनुवंशिकता और वातावरण के बीच परस्पर अंत : क्रिया का
प्रश्न 19Single Answer
विकास के किस चरण में बहुत से हार्मोन संबंधी परिवर्तन होते हैं तथा अपनी पहचान की सक्रिय खोज पर बल होता है ?
  1. A
    किशोरावस्था
  2. B
    शैशवावस्था
  3. C
    प्रारम्भिक बाल्यावस्था
  4. D
    माध्यमिक बाल्यावस्था
प्रश्न 20Single Answer
कथन (A) : भाषा विकास केवल शैशवावस्था के दौरान होता है और इसलिए केवल शेशवावस्था तक ही उपयुक्त प्रदान करना चाहिए ।
तर्क (R) : शुरुआती वर्षों के दौरान अनुभव किए गए नकारात्मक वातावरण का दीर्घकालिक प्रभाव नहीं होता ।
सही विकल्प चुने :
  1. A
    (A) तथा (R) दोनों सही है तथा (R), (A) की सही व्याख्या है
  2. B
    (A) तथा (R) दोनों सही है तथा (R), (A) की सही व्याख्या नहीं है
  3. C
    (A) सही है परन्तु (R) गलत है
  4. D
    (A) और (R) दोनों गलत है
प्रश्न 21Single Answer
किस अवधि के दौरान विचार अमूर्त और आदर्शवादी हो जाता है ?
  1. A
    शैशवावस्था
  2. B
    प्रारम्भिक बचपन
  3. C
    मध्य बचपन
  4. D
    किशोरावस्था
प्रश्न 22Single Answer
अधिगम के संदर्भ में निम्नलिखित में से कौन सा कथन सही है ?
  1. A
    छात्र सबसे अच्छा तब सीखते हैं जब वे उन गतिविधयों में भाग लेते हैं जो उनके सन्दर्भ से संबंधित होती है
  2. B
    छात्र सबसे अच्छा तब सीखते हैं जब वे उन गतिविधियों में भाग लेते हैं जो उनके सन्दर्भ से सबंधित नहीं होती हैं
  3. C
    जब छात्र अर्थहीन गतिविधियों में भाग लेते हैं तो वे सबसे अच्छा सीखते हैं
  4. D
    यांत्रिक गतिविधियों में भाग लेने पर छात्र सबसे अच्छा सीखते हैं
प्रश्न 23Single Answer
बच्चों के विकास के संबंध में निम्नलिखित में से कौन सा कथन सही है ?
  1. A
    विकास के क्षेत्र सुस्पष्ट हैं और उनका एक - दूसरे से कोई संबंध नहीं है
  2. B
    बाल विकास से संबंधित विभिन्न सिद्धांत बच्चों के विकास के विषय में एकमत हैं
  3. C
    बच्चों का विकास उनके सामाजिक संदर्भ से प्रभावित होता है
  4. D
    सभी बच्चों के लिए विकास एक निर्बाध और निरंतर प्रक्रिया है
प्रश्न 24Single Answer
विकास की उस अवधि को क्या कहते हैं, जब आत्मसात मानकों पर प्रश्न उठाया जाता है और अक्सर परिवार की तुलना में सार्थियों की राय बहुत महत्वपूर्ण हो जाती है ?
  1. A
    शैशवावस्था
  2. B
    आरम्भिक बाल्यावस्था
  3. C
    मध्य बाल्यावस्था
  4. D
    किशोरावस्था
प्रश्न 25Single Answer
विकास की कौन सी अवस्था में निम्न लक्षण समाहित है ? ‘स्वतंत्रता की स्थापना’ अस्मिता का विकास और अमूर्त चिंतन
  1. A
    मध्य बाल्यावस्था
  2. B
    उत्तर बाल्यावस्था
  3. C
    किशोरावस्था
  4. D
    पूर्व वयस्कावस्था
प्रश्न 26Single Answer
विकास की दिशा और क्रम हर बच्चे के लिए समान होता है, लेकिन हर बच्चा अपनी गति से विकसित होता है । यह बालविकास के निम्नलिखित में से किस सिद्धांत को दर्शाता है ?
  1. A
    अनिरंतरता
  2. B
    रैखिकता
  3. C
    एकरूपता
  4. D
    पृथकता
प्रश्न 27Single Answer
विकास .................. हैं ?
  1. A
    एक आयामी
  2. B
    एक दिशायी
  3. C
    में बदलाव किया जा सकता
  4. D
    आनुवंशिकता द्वारा पूर्ण रूप से पूर्व निर्धारित
प्रश्न 28Single Answer
बालकों के व्यक्तिगत विकास -
  1. A
    के लिए विकासात्मक प्रतिमानों को उद्धृत करके सटीकता से वह पक्के तौर पर भविष्यवाणी की जा सकती है
  2. B
    के लिए पूर्वानुमान बिल्कुल नहीं लगाया जा सकता
  3. C
    के लिए कुछ हद तक पूर्वानुमान लगाया जा सकता
  4. D
    अव्यवस्थित व असतत् होती है
प्रश्न 29Single Answer
निम्नलिखित में से कौन - सा कथन सही है ?
  1. A
    विकास क्रमबद्ध नहीं होता है
  2. B
    विकास अव्यवस्थित होता है
  3. C
    विकास एक सतत् प्रक्रिया हैं
  4. D
    विकासात्मक प्रतिमान सांस्कृतिक परिवेश से प्रभावित नहीं होते
प्रश्न 30Single Answer
कथन (A) : एक बच्चे की शिक्षा की प्रगति को उसी क्रम के बच्चों के विकास की दर से तुलना करके सटीकता से मापा जा सकता है ।
तर्क (R) : विकास का स्वरूप व गति सभी बच्चों के लिए एक समान होता है तभी सभी सांस्कतिक परिवेश में समान रहता है ।
सही विकल्प चुने :
  1. A
    (A) तथा (R) दोनों सही है तथा (R), (A) की सही व्याख्या है
  2. B
    (A) तथा (R) दोनों सही है तथा (R), (A) की सही व्याख्या नहीं है
  3. C
    (A) सही है परन्तु (R) गलत है
  4. D
    (A) और (R) गलत है

English Language

प्रश्न 31Single Answer
Answer the following question by selecting the correct / most appropriate option. The study of meaning in a language is known as
  1. A
    Linguistics
  2. B
    Syntax
  3. C
    Semantics
  4. D
    Morphology
प्रश्न 32Single Answer
Positive interference is a kind of
  1. A
    foreign language
  2. B
    pictorial language
  3. C
    native language
  4. D
    target language
प्रश्न 33Single Answer
When a child learns a language naturally without much practice, it is called .
  1. A
    language generalisation
  2. B
    language adaption
  3. C
    language learning
  4. D
    language acquisition
प्रश्न 34Single Answer
The most important factor which is responsible for the differentiation between language learning and language acquisition is
  1. A
    Language environment
  2. B
    grammar of language
  3. C
    assessment in language
  4. D
    textbook of language
प्रश्न 35Single Answer
Language is not
  1. A
    instinctive
  2. B
    social
  3. C
    arbitrary
  4. D
    symbolic
प्रश्न 36Single Answer
Structural approach lays stress on
  1. A
    developing linguistic competence
  2. B
    selection and gradation of materials
  3. C
    improving fluency
  4. D
    developing accuracy
प्रश्न 37Single Answer
The communicative approach to teach English focuses on
  1. A
    the structural accuracy of the sentences
  2. B
    correct pronunciation of words
  3. C
    linguistic competence plus ability to use the language appropriately
  4. D
    the practice of selected and graded structure patterns
प्रश्न 38Single Answer
What is a 'task' in task - based language learning ?
  1. A
    A piece of work which enables learners to do an activity
  2. B
    A piece of work for the parents to do their children's homework
  3. C
    A piece of activity for teachers to do in the classroom
  4. D
    A piece of work which exposes learners to language
प्रश्न 39Single Answer
Reading English as a second language means
  1. A
    reading aloud
  2. B
    reading for grammar
  3. C
    meaning making
  4. D
    decoding of letters and words
प्रश्न 40Single Answer
Which of the following is not true while teaching the learners in their mother tongue at primary level ?
  1. A
    It is helpful in the intellectual development of the child
  2. B
    It helps children in learning in a natural environment
  3. C
    It develops self - confidence in the child
  4. D
    It makes learning easy
प्रश्न 41Single Answer
Which one of the following would be the best evidence to demonstrate the parents and administrators what students can do with language ?
  1. A
    National curriculum and syllabus
  2. B
    Lists of course goals and objectives
  3. C
    Marks in a test
  4. D
    Poems or paragraphs written by students
प्रश्न 42Single Answer
In a role play a student at the end said, "This news report is presented by the reporter Anshu and cameraman Priya." The teacher said that instead of cameraman you should say camera person. It indicates that the teacher is using a
  1. A
    feminine gender
  2. B
    gender biased language
  3. C
    gender neutral language
  4. D
    masculine gender
प्रश्न 43Single Answer
Of the following, which one is most important pre - requisite for language learning whether first or second ?
  1. A
    A structural - situational approach
  2. B
    Skills - based instruction
  3. C
    A multilingual approach
  4. D
    An input - rich communicational environment
प्रश्न 44Single Answer
The structural approach advocates
  1. A
    resorting to fluency
  2. B
    selection and gradation of material
  3. C
    assessing learners performance using mother tongue
  4. D
    using mother tongue
प्रश्न 45Single Answer
In the primary classes, it is recommended that children should be taught in their mother tongue because
  1. A
    it enables children to comprehend
  2. B
    it creates a natural environment
  3. C
    children develop self - confidence
  4. D
    it promotes regional languages
प्रश्न 46Single Answer
गद्यांश :
Direction : Read the following passage carefully and answer the questions that follow by selecting the correct/most appropriate options.
Did you know that there is a fiber that is as flexible and lightweight as nylon yet five times stronger than steel ? Did you know that this fabric is resistant to temperatures higher than 500°F ? Did you know that a woman invented this fiber ? This miraculous fabric is called Kevlar and it is used to make everything from body armor to musical instruments.
The year was 1964. There were gasoline shortages due to conflict in the Middle East. A Polish - American chemist named Stephanie Louise Kwolek was working for DuPont, an American Chemical Company. She and her group were trying to make a lightweight, yet durable fibre to be used in tires. Lighter tires would allow vehicles to get better gas mileage, but the tires had to be strong enough to resist the wear and tear of the road. They had been working on the problem for some time and had little success, until Kwolek had a breakthrough.
Kwolek and her group were synthesizing or creating fibres to test. During one of the steps in the process, Kwolek created a milky white solution by mixing two chemicals that were often used in the process. This solution was usually thrown away, but Kwolek convinced one of the technicians to help her test it. They were amazed to discover that the fabric that Kwolek had created was not only more durable than nylon, it was more durable than steel.
Kwolek had invented Kevlar. Kevlar is a remarkable fabric known for its strength and durability. Since its invention it has found its way into a wide variety of products. Kevlar is used in sporting equipment like bike tires, bowstrings and tennis racquets. It is used in musical instruments like drum heads, reeds and speaker cones. And it is used in protective gear like motorcycle safety jackets, gloves and shoes. However, Kevlar is best known for its ability to stop bullets.
Richard Armellino created the first Kevlar bulletproof vest in 1975. It contained 15 layers of Kevlar, which could stop handgun and shotgun bullets. The vest also had a steel plate over the heart, which made the vest strong enough to stop rifle rounds. Vests like Armellino's were quickly picked up by police forces and it is estimated that by 1990, half of all police officers in America wore bulletproof vests daily. By 2006, there were over 2,000 documented police vest 'saves', or instances where officers were protected from deadly wounds by wearing bulletproof vests.
Which one of the following is not a product that has been made with Kevlar ?
  1. A
    Body armor
  2. B
    Tennis racquets
  3. C
    Bungee jumping cord
  4. D
    Brake pads
प्रश्न 47Single Answer
गद्यांश :
Direction : Read the following passage carefully and answer the questions that follow by selecting the correct/most appropriate options.
Did you know that there is a fiber that is as flexible and lightweight as nylon yet five times stronger than steel ? Did you know that this fabric is resistant to temperatures higher than 500°F ? Did you know that a woman invented this fiber ? This miraculous fabric is called Kevlar and it is used to make everything from body armor to musical instruments.
The year was 1964. There were gasoline shortages due to conflict in the Middle East. A Polish - American chemist named Stephanie Louise Kwolek was working for DuPont, an American Chemical Company. She and her group were trying to make a lightweight, yet durable fibre to be used in tires. Lighter tires would allow vehicles to get better gas mileage, but the tires had to be strong enough to resist the wear and tear of the road. They had been working on the problem for some time and had little success, until Kwolek had a breakthrough.
Kwolek and her group were synthesizing or creating fibres to test. During one of the steps in the process, Kwolek created a milky white solution by mixing two chemicals that were often used in the process. This solution was usually thrown away, but Kwolek convinced one of the technicians to help her test it. They were amazed to discover that the fabric that Kwolek had created was not only more durable than nylon, it was more durable than steel.
Kwolek had invented Kevlar. Kevlar is a remarkable fabric known for its strength and durability. Since its invention it has found its way into a wide variety of products. Kevlar is used in sporting equipment like bike tires, bowstrings and tennis racquets. It is used in musical instruments like drum heads, reeds and speaker cones. And it is used in protective gear like motorcycle safety jackets, gloves and shoes. However, Kevlar is best known for its ability to stop bullets.
Richard Armellino created the first Kevlar bulletproof vest in 1975. It contained 15 layers of Kevlar, which could stop handgun and shotgun bullets. The vest also had a steel plate over the heart, which made the vest strong enough to stop rifle rounds. Vests like Armellino's were quickly picked up by police forces and it is estimated that by 1990, half of all police officers in America wore bulletproof vests daily. By 2006, there were over 2,000 documented police vest 'saves', or instances where officers were protected from deadly wounds by wearing bulletproof vests.
For which of the following characteristics is Kevlar known ?
  1. A
    Durability
  2. B
    Heat resistant
  3. C
    Strength
  4. D
    All of these
प्रश्न 48Single Answer
गद्यांश :
Direction : Read the following passage carefully and answer the questions that follow by selecting the correct/most appropriate options.
Did you know that there is a fiber that is as flexible and lightweight as nylon yet five times stronger than steel ? Did you know that this fabric is resistant to temperatures higher than 500°F ? Did you know that a woman invented this fiber ? This miraculous fabric is called Kevlar and it is used to make everything from body armor to musical instruments.
The year was 1964. There were gasoline shortages due to conflict in the Middle East. A Polish - American chemist named Stephanie Louise Kwolek was working for DuPont, an American Chemical Company. She and her group were trying to make a lightweight, yet durable fibre to be used in tires. Lighter tires would allow vehicles to get better gas mileage, but the tires had to be strong enough to resist the wear and tear of the road. They had been working on the problem for some time and had little success, until Kwolek had a breakthrough.
Kwolek and her group were synthesizing or creating fibres to test. During one of the steps in the process, Kwolek created a milky white solution by mixing two chemicals that were often used in the process. This solution was usually thrown away, but Kwolek convinced one of the technicians to help her test it. They were amazed to discover that the fabric that Kwolek had created was not only more durable than nylon, it was more durable than steel.
Kwolek had invented Kevlar. Kevlar is a remarkable fabric known for its strength and durability. Since its invention it has found its way into a wide variety of products. Kevlar is used in sporting equipment like bike tires, bowstrings and tennis racquets. It is used in musical instruments like drum heads, reeds and speaker cones. And it is used in protective gear like motorcycle safety jackets, gloves and shoes. However, Kevlar is best known for its ability to stop bullets.
Richard Armellino created the first Kevlar bulletproof vest in 1975. It contained 15 layers of Kevlar, which could stop handgun and shotgun bullets. The vest also had a steel plate over the heart, which made the vest strong enough to stop rifle rounds. Vests like Armellino's were quickly picked up by police forces and it is estimated that by 1990, half of all police officers in America wore bulletproof vests daily. By 2006, there were over 2,000 documented police vest 'saves', or instances where officers were protected from deadly wounds by wearing bulletproof vests.
Which one of the following caused the search for a fabric like Kevlar ?
  1. A
    The want of better musical instruments
  2. B
    A shortage in the gasoline supply
  3. C
    A desire to protect police officers
  4. D
    The need to replace asbestos
प्रश्न 49Single Answer
गद्यांश :
Direction : Read the following passage carefully and answer the questions that follow by selecting the correct/most appropriate options.
Did you know that there is a fiber that is as flexible and lightweight as nylon yet five times stronger than steel ? Did you know that this fabric is resistant to temperatures higher than 500°F ? Did you know that a woman invented this fiber ? This miraculous fabric is called Kevlar and it is used to make everything from body armor to musical instruments.
The year was 1964. There were gasoline shortages due to conflict in the Middle East. A Polish - American chemist named Stephanie Louise Kwolek was working for DuPont, an American Chemical Company. She and her group were trying to make a lightweight, yet durable fibre to be used in tires. Lighter tires would allow vehicles to get better gas mileage, but the tires had to be strong enough to resist the wear and tear of the road. They had been working on the problem for some time and had little success, until Kwolek had a breakthrough.
Kwolek and her group were synthesizing or creating fibres to test. During one of the steps in the process, Kwolek created a milky white solution by mixing two chemicals that were often used in the process. This solution was usually thrown away, but Kwolek convinced one of the technicians to help her test it. They were amazed to discover that the fabric that Kwolek had created was not only more durable than nylon, it was more durable than steel.
Kwolek had invented Kevlar. Kevlar is a remarkable fabric known for its strength and durability. Since its invention it has found its way into a wide variety of products. Kevlar is used in sporting equipment like bike tires, bowstrings and tennis racquets. It is used in musical instruments like drum heads, reeds and speaker cones. And it is used in protective gear like motorcycle safety jackets, gloves and shoes. However, Kevlar is best known for its ability to stop bullets.
Richard Armellino created the first Kevlar bulletproof vest in 1975. It contained 15 layers of Kevlar, which could stop handgun and shotgun bullets. The vest also had a steel plate over the heart, which made the vest strong enough to stop rifle rounds. Vests like Armellino's were quickly picked up by police forces and it is estimated that by 1990, half of all police officers in America wore bulletproof vests daily. By 2006, there were over 2,000 documented police vest 'saves', or instances where officers were protected from deadly wounds by wearing bulletproof vests.
A vest made of 15 layers of Kevlar with no steel plates could stop all but which of the following rounds ?
  1. A
    Rifle rounds
  2. B
    Handgun rounds
  3. C
    Shotgun pellets
  4. D
    It could stop all of these
प्रश्न 50Single Answer
गद्यांश :
Direction : Read the following passage carefully and answer the questions that follow by selecting the correct/most appropriate options.
Did you know that there is a fiber that is as flexible and lightweight as nylon yet five times stronger than steel ? Did you know that this fabric is resistant to temperatures higher than 500°F ? Did you know that a woman invented this fiber ? This miraculous fabric is called Kevlar and it is used to make everything from body armor to musical instruments.
The year was 1964. There were gasoline shortages due to conflict in the Middle East. A Polish - American chemist named Stephanie Louise Kwolek was working for DuPont, an American Chemical Company. She and her group were trying to make a lightweight, yet durable fibre to be used in tires. Lighter tires would allow vehicles to get better gas mileage, but the tires had to be strong enough to resist the wear and tear of the road. They had been working on the problem for some time and had little success, until Kwolek had a breakthrough.
Kwolek and her group were synthesizing or creating fibres to test. During one of the steps in the process, Kwolek created a milky white solution by mixing two chemicals that were often used in the process. This solution was usually thrown away, but Kwolek convinced one of the technicians to help her test it. They were amazed to discover that the fabric that Kwolek had created was not only more durable than nylon, it was more durable than steel.
Kwolek had invented Kevlar. Kevlar is a remarkable fabric known for its strength and durability. Since its invention it has found its way into a wide variety of products. Kevlar is used in sporting equipment like bike tires, bowstrings and tennis racquets. It is used in musical instruments like drum heads, reeds and speaker cones. And it is used in protective gear like motorcycle safety jackets, gloves and shoes. However, Kevlar is best known for its ability to stop bullets.
Richard Armellino created the first Kevlar bulletproof vest in 1975. It contained 15 layers of Kevlar, which could stop handgun and shotgun bullets. The vest also had a steel plate over the heart, which made the vest strong enough to stop rifle rounds. Vests like Armellino's were quickly picked up by police forces and it is estimated that by 1990, half of all police officers in America wore bulletproof vests daily. By 2006, there were over 2,000 documented police vest 'saves', or instances where officers were protected from deadly wounds by wearing bulletproof vests.
How much stronger is Kevlar than steel ?
  1. A
    200 times as strong
  2. B
    Half as strong
  3. C
    As strong
  4. D
    Five times as strong
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