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Latest Bihar Special School Teacher Social Studies Exam Question (Objective Questions), MCQ in Hindi

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

Question Bank Bihar Special School Teacher Social Studies Exam - Hindi
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Child Development and Pedagogy

प्रश्न 1Single Answer
विकास कभी न समाप्त होने वाली प्रक्रिया है यह विचार किससे सम्बन्धित है ?
  1. A
    एकीकरण का सिद्धान्त
  2. B
    अंतः क्रिया का सिद्धान्त
  3. C
    अंतः सम्बन्ध का सिद्धान्त
  4. D
    निरन्तरता का सिद्धान्त
प्रश्न 2Single Answer
निचली कक्षाओं में शिक्षण की खेल पद्धति मूलरूप से आधारित है ?
  1. A
    विकास एवं अभिवृद्धि के मनोवैज्ञानिक सिद्धान्तों पर
  2. B
    शिक्षण के समाजशास्त्रीय (Sociological) सिद्धान्तों पर
  3. C
    शारीरिक शिक्षा कार्यक्रमों के सिद्धान्त पर
  4. D
    शिक्षण.पद्धतियों के सिद्धान्त पर
प्रश्न 3Single Answer
निम्नलिखित में से किस अवस्था में बच्चे अपने समवयस्क समूह (Peer Group) के सक्रिय सदस्य हो जाते हैं?
  1. A
    पूर्व बाल्यावस्था    
  2. B
    बाल्यावस्था
  3. C
    किशोरावस्था      
  4. D
    प्रौढ़ावस्था
प्रश्न 4Single Answer
खिलौने की आयु (Toy age) कहा जाता है ?
  1. A
    पूर्व बाल्यावस्था (Early childhood) को
  2. B
    उत्तर बाल्यावस्था (Late childhood) को
  3. C
    शैशवावस्था  को (Babyhood)
  4. D
    उपर्युक्त सभी
प्रश्न 5Single Answer
विकास का अर्थ है -
  1. A
    परिवर्तनों की उत्तरोत्तर श्रृंखला (Progressive Series of Changes) 
  2. B
    अभिप्रेरणा (Motivation) के फलस्वरूप होने वाले परिर्वतनों की श्रृंखला
  3. C
    अभिप्रेरणा एवं अनुभव के फलस्वरूप होने वाले परिवर्तनों की उत्तरोत्तर श्रृंखला
  4. D
    परिपक्वता (Maturation) एवं अनुभव के फलस्वरूप होने वाले परिवर्तनों की श्रृंखला
प्रश्न 6Single Answer
विकास के सन्दर्भ में निम्नलिखित में से कौन-सा कथन सत्य नहीं है ?
  1. A
    विकास की प्रत्येक अवस्था के अपने खतरे हैं
  2. B
    विकास बढ़ावा (Stimulation) देने से नहीं होता है
  3. C
    विकास सांस्कृतिक परिवर्तनों से प्रभावित होता है
  4. D
    विकास की प्रत्येक अवस्था की अपनी विशेषता होती है
प्रश्न 7Single Answer
कुछ लोगों का कहना है कि जब बालकों को गुस्सा आता है तो वे खेलने के लिए चले जाते हैं। जब तक पहले से अच्छा महसूस नहीं करते, उनके व्यवहार में निम्नलिखित में से कौन-सा प्रतिरक्षा तन्त्र प्रतिलक्षित (Defence mechanism in Represented) होता है?
  1. A
    प्रक्षेपण (Projection) 
  2. B
    विस्थापन (Displacement) 
  3. C
    प्रतिक्रिया निर्माण (Reaction Formation) 
  4. D
    उदात्तीकरण (Sublimation)
प्रश्न 8Single Answer
निम्नलिखित में से कौनसा कथन विकास के बारे में सत्य नहीं है ?
  1. A
    विकास अन्तः क्रिया का फल है (Product of Inter-action) 
  2. B
    विकास एक व्यवस्थित श्रृंखला का अनुगामी है (Orderly sequence) 
  3. C
    विकास एक व्यक्तिगत प्रक्रिया है। (Individualized)
  4. D
    विकास विशिष्ट से सामान्य की ओर होता है।
प्रश्न 9Single Answer
बालकों की सोच अमूर्तता (Abstraction) की अपेक्षा मूर्त (Concrete) अनुभवों एवं प्रत्ययों (Concepts) से होता है। यह अवस्था है -
  1. A
    7 से 12 वर्ष तक   
  2. B
    12 से वयस्क तक
  3. C
    2 से 7 वर्ष तक   
  4. D
    जन्म से 2 वर्ष तक
प्रश्न 10Single Answer
निम्न कक्षाओं में शिक्षण की खेल विधि आधारित है ?
  1. A
    शारीरिक शिक्षा कार्यक्रमों के सिद्धान्त पर
  2. B
    शिक्षण की विधियों के सिद्धान्त पर
  3. C
    विकास एवं वृद्धि के मनोवैज्ञानिक सिद्धान्त पर
  4. D
    शिक्षण के सामाजिक सिद्धान्तों पर
प्रश्न 11Single Answer
बचपन के साम्प्रतिक दृष्टिकोण की मान्यता है ?
  1. A
    बहुत तरीके से बच्चे प्राप्त वयस्कों के बराबर होते हैं ।
  2. B
    बच्चों को युवा प्राप्त वयस्कों के रूप में सबसे अच्छा माना जाता है।
  3. C
    बचपन आधारिक रूप से प्रतीक्षा अवधि है।
  4. D
    बचपन वृद्धि एवं परिवर्तन की अनूठी अवधि है।
प्रश्न 12Single Answer
निम्नलिखित में से किस स्तर में बालक अपने समकक्षी वर्ग के सक्रिय सदस्य बनते हैं ?
  1. A
    किशोरावस्था      
  2. B
    वयस्कावस्था
  3. C
    प्राक् बाल्यावस्था   
  4. D
    बाल्यावस्था
प्रश्न 13Single Answer
एक प्रसामान्य 12 वर्ष उम्र के बच्चे में सबसे अधिक होना सम्भव है ?
  1. A
    कुल-प्रेरक समन्वय में कठिनाई
  2. B
    वयस्कों को खुश करने के बारे में दुश्चिन्ता की अनुभूति
  3. C
    अब और यहाँ में उसकी रुचियों को सीमित करना
  4. D
    समकक्षी के अनुमोदन के लिए बेचैनी
प्रश्न 14Single Answer
निम्नलिखित में से कौनसा विकास का सिद्धान्त नहीं है ?
  1. A
    विकास लम्बवत् न होकर वर्तुलाकार होता है
  2. B
    विकास क्रमबद्ध होता है
  3. C
    विकास निरन्तर होता है
  4. D
    विकास मशीनी प्रक्रिया है
प्रश्न 15Single Answer
मनोविज्ञान के अनुसार बाल विकास की कौन-सी अवस्था सबसे जटिल है ?
  1. A
    शैशवावस्था  
  2. B
    किशोरावस्था
  3. C
    बाल्यावस्था  
  4. D
    इनमें से कोई नहीं
प्रश्न 16Single Answer
शर्म तथा गर्व जैसी भावना का विकास किस अवस्था में होता है ?
  1. A
    शैशवास्था
  2. B
    बाल्यावस्था
  3. C
    किशोरावस्था 
  4. D
    वृद्धावस्था
प्रश्न 17Single Answer
शैशवावस्था की मुख्य विशेषता क्या नहीं है ?
  1. A
    सीखने की प्रक्रिया में तीव्रता
  2. B
    जिज्ञासा की प्रवृत्ति
  3. C
    अनुकरण द्वारा सीखने की प्रवृत्ति
  4. D
    चिन्तन प्रक्रिया
प्रश्न 18Single Answer
किस मनोवैज्ञानिक के अनुसार विकास एक सतत् और धीमी-धीमी प्रक्रिया है ?
  1. A
    कोलेसनिक 
  2. B
    पियाजे
  3. C
    स्किनर
  4. D
    हरलॉक
प्रश्न 19Single Answer
बाल्यावस्था अवस्था होती है ?
  1. A
    पाँच वर्ष तक    
  2. B
    बारह वर्ष तक
  3. C
    इक्कीस वर्ष तक  
  4. D
    कोई भी नहीं
प्रश्न 20Single Answer
व्यक्तित्व विकास की अवस्था है ?
  1. A
    अधिगम एवं वृद्धि
  2. B
    व्यक्तिवृत्त अध्ययन
  3. C
    उपचारात्मक अध्ययन
  4. D
    इनमें से कोई नहीं
प्रश्न 21Single Answer
विकास में वृद्धि से तात्पर्य है ?
  1. A
    ज्ञान में वृद्धि
  2. B
    संवेग में वृद्धि
  3. C
    वजन में वृद्धि
  4. D
    आकार, सोच, समझ कौशलों में वृद्धि
प्रश्न 22Single Answer
परिपक्वता का सम्बन्ध है ?
  1. A
    विकास
  2. B
    बुद्धि
  3. C
    सृजनात्मकता
  4. D
    रुचि
प्रश्न 23Single Answer
तनाव और क्रोध की अवस्था है ?
  1. A
    शैशवावस्था
  2. B
    किशोरावस्था
  3. C
    बाल्यावस्था
  4. D
    वृद्धावस्था
प्रश्न 24Single Answer
सीखने की प्रोजेक्ट विधि किस अवस्था के लिए उपयोगी है ?
  1. A
    बाल्यावस्था
  2. B
    पूर्व बाल्यावस्था
  3. C
    किशोरावस्था
  4. D
    उपर्युक्त सभी
प्रश्न 25Single Answer
बच्चे के विकास के शिरस्थ सिद्धान्त के कौनसा सत्य कथन है ?
  1. A
    विकास सिर से पैर की ओर होता है
  2. B
    विकास पैर से सिर की ओर होता है
  3. C
    विकास मध्य भाग से परिधि की ओर होता।
  4. D
    उपर्युक्त में से कोई नहीं
प्रश्न 26Single Answer
संक्षिप्त रूप PSRN जो कि विकास से सम्बन्धित करता है ?
  1. A
    समस्या हल, तार्किकता व आंकिक क्षमता (PSolving, Reasoning and Numeracy)
  2. B
    समस्या हल, सम्बन्ध और  आंकिक क्षमता (PSolving, Relationship and Numeracy)
  3. C
    बौद्धिक क्षमता, तार्किकता और  आंकिक क्षमता (Perceptual Skill, Reasoning and Numeracy)
  4. D
    बौद्धिक क्षमता, सम्बन्ध और अंक का ज्ञान (Perceptual skill, Relationship and Numbers)
प्रश्न 27Single Answer
वाइगोत्सकी (Vygotsky) ने बाल विकास के विषय में कहा है कि -
  1. A
    यह संस्कारों की आनुवंशिकी के कारण होता है
  2. B
    यह सामाजिक अनुक्रिया का उत्पाद होता है
  3. C
    औपचारिक शिक्षा का उत्पाद होता है
  4. D
    यह समावेशन और समायोजन का परिणाम होता है
प्रश्न 28Single Answer
निम्नलिखित में से कौनसा विकास का सिद्धान्त है ?
  1. A
    सभी की विकास दर समान नहीं होती
  2. B
    विकास हमेशा रेखीय होता है
  3. C
    यह निरन्तर चलने वाली प्रक्रिया नहीं है
  4. D
    विकास की सभी प्रक्रियाएँ अन्तः सम्बन्धित नहीं हैं
प्रश्न 29Single Answer
मानव विकास के क्षेत्रों में विभाजित किया जा सकता है ?
  1. A
    शारीरिक, संज्ञानात्मक, संवेगात्मक और सामाजिक
  2. B
    संवेगात्मक, संज्ञानात्मक, आध्यात्मिक और सामाजिक, मनोवैज्ञानिक
  3. C
    मनोवैज्ञानिक, संज्ञानात्मक संवेगात्मक और शारीरिक
  4. D
    शारीरिक, आध्यात्मिक, संज्ञानात्मक और सामाजिक
प्रश्न 30Single Answer
विकास शुरू होता है ?
  1. A
    उत्तर बाल्यावस्था
  2. B
    प्रसवपूर्व अवस्था से
  3. C
    शैशवावस्था
  4. D
    पूर्व बाल्यावस्था से

English Language & Pedagogy

प्रश्न 31Single Answer
Read sentence to find out whether there is any grammatical error in it. The sentences are In three separate parts and each one is labelled (a), (b), (c) and (d). In that case, letter (d) will signify a ‘No error’ response.
  1. A
    He was in the temper
  2. B
    and refused
  3. C
    discuss the matter again
  4. D
    No error
प्रश्न 32Single Answer
Read sentence to find out whether there is any grammatical error in it. The sentences are In three separate parts and each one is labelled (a), (b), (c) and (d). In that case, letter (d) will signify a ‘No error’ response.
  1. A
    A flower makes no garland
  2. B
    so we must do a thing together
  3. C
    in a unit for a good result
  4. D
    No error
प्रश्न 33Single Answer
Read sentence to find out whether there is any grammatical error in it. The sentences are In three separate parts and each one is labelled (a), (b), (c) and (d). In that case, letter (d) will signify a ‘No error’ response.
  1. A
    My friend is a software engineer
  2. B
    and his wife is doctor
  3. C
    so they don’t have enough time for each other
  4. D
    No error
प्रश्न 34Single Answer
Read sentence to find out whether there is any grammatical error in it. The sentences are In three separate parts and each one is labelled (a), (b), (c) and (d). In that case, letter (d) will signify a ‘No error’ response.
  1. A
    I don’t have much time that
  2. B
    I hear you in detail with verbosity
  3. C
    tell everything in nutshell
  4. D
    No error
प्रश्न 35Single Answer
Read sentence to find out whether there is any grammatical error in it. The sentences are In three separate parts and each one is labelled (a), (b), (c) and (d). In that case, letter (d) will signify a ‘No error’ response.
  1. A
    The atmosphere is changing
  2. B
    so I have severe pain in my body
  3. C
    if you have any painkiller, please give it to me
  4. D
    No error
प्रश्न 36Single 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 37Single Answer
Positive interference is a kind of
  1. A
    foreign language
  2. B
    pictorial language
  3. C
    native language
  4. D
    target language
प्रश्न 38Single 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 39Single 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 40Single Answer
Language is not
  1. A
    instinctive
  2. B
    social
  3. C
    arbitrary
  4. D
    symbolic
प्रश्न 41Single 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 42Single 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 43Single 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 44Single 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 45Single 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 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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