73 + Interview Questions in FEBRUARY-2018 IN GENERAL AWARENESS

1.	How glucose is prepared from cane sugar ? Write the formula of the complex copper (II) hexacyano ferrate (II).
Answer» Preparation of glucose from cane sugar. `underset("Cane sugar")(C_(12)H_(22)O_(11))+H_(2)O overset("dil. HCl or")(underset(underset(Delta "alcoholic")("dil." H_(2)SO_(4)))rarr) underset("Glucose")(C_(6)H_(12)O_(6))+underset("Fructose")(C_(6)H_(12)O_(6))` On cooling the reaction mixture, glucose separate out because it is less soluble in alcohol and fructose remains in the solution crystals of glucose are then filtered and purified by recrystallization. Formula of complex copper (II) hexacyano ferrate (II) is `Cu_(2)[Fe(CN)_(6)]`.

Discussion

2.	निम्नलिखित वाक्यों का कोष्ठक में दी गई सूचना के अनुसार काल परिवर्तन करके वाक्य फिर से लिखिए : अपने पड़ोसी से मुझे एक हिरन मिलता है । (पूर्ण भूतकाल में लिखिए ।)
Answer» अपने पडोसी से मुझे एक हिरन मिला था ।

Discussion

3.	Sarvepalli Radhakrishnan was the first Vice-President and second President of India. He was a teacher, a philosopher and an author. He had introduced the thinking of Western idealist philosophers like Plato, Plontinus, Bergson into Indian thought. He was born on 5th of September, 1883, in a poor Brahmin family. As his father could not afford his education expenses, Radhakrishnan supported most of his education through scholarships. He completed his B.A. and M.A. with majors in philosophy. He went on the become a professor of philosophy. He showed that Indian Philosophy, once translated into standard academic jargon, is worthy of being called philosophy by Western standards. He thus, placed Indian Philosophy on world map. Sarvepalli Radhakrishnan had established a strong relationship with the Soviet Union when he was appointed as the ambassador to the Soviet Union. He has been honoured with many awards for his achievements nationally and internationally. He was honoured with the Bharat Ratna in 1954. He is also acknowledged with the Templeton Prize, Peace Prize of German Book Trade, Order of Merit and many other honours. Title : Sarvepalli Radhakrishnan Birth : 5th September, 1888 Qualifications : B.A.....................M.A....................Introduced thinking of : ...........................................,and...................into Indian thought. Work : Translated.......................................into standard.................................. Ambassador : ............................................ Honours : National.................................International.....................................order of Merit.
Answer» • Qualifications : B.A., M.A. (Philosophy) • Introduced thinking of : Plato, Plontinus and Bergson into Indian thought. • Work : Translated Indian Philosophy into standard academic jargon, • Ambassador : The Soviet Union. • Honours : National : Bharat Ratna in 1954 • International : Templeton Prize, Peace Prize of German Book Trade. Order of Merit.

Discussion

4.	Write a letter of application in response to the following advertisement with the help of the given C.V. (Resume) : C.V. (Resume) Name : Aruna Anil Shinde Address : B1-104, Rose Parade, S.B. Road, Nagpur. Educational Qualifications : Other Qualifications : Successfully completed Computer Diploma from NIIT, Nagpur-2014 Work Experience : Worked as the Purchase Officer in Login Private Ltd., Nagpur. Interest/Hobbies : Reading, music, swimming, chass. Languages Known : English, Marathi, Hindi, Gujarati.
Answer» B1 - 104, Rose Parade, S.B. Road, Nagpur 21st March, 20XX The Managing Director, Cosmos Ltd., 72-E, Industrial Area, Andheri (E), Mumbai-400 093 Subject : Application for the post of Purchase Officer. Sir/Madam, With reference to your advertisement in The Hindu, dated 20th March, 20XX, I would like to submit an application for the position of Purchase Officer. I believe, I am suitably qualified with the skillset required to make a valuable contribution to your company. I have done B.E. (Electrical). I have a diploma in Computer from NIIT, Nagpur. I had also worked in Login Private Ltd. Nagpur as a Purchase Officer. As regards my hobbies, I like to read books, listen to music, swim and play chess. Moreover, I am well-conversant in different types of languages like English, Hindi, Marathi and Gujarati. For reference, I am enclosing my C.V. with the hope of a positive response from you. Thanking you, Yours truly, (Aruna Anil Shinde)

Discussion

5.	State the conditions for constructive and destructive inter-ference of light.
Answer» For constructive interference: (a) Phase difference between any two waves should be integral multiple of `2pi`,i.e., `phi=2n pi,` where n = 0, 1, 2, …… (b) Path difference should be equal to `(lambda)/(2pi)` times of phase difference, i.e., `Delta=(lambda)/(2pi)xx`Phase difference `=(lambda)/(2pi)xx2n pi=n lambda,` Where, n = 0, 1, 2, ........... For destructive interference : (a) Phase difference between two waves should be `phi =J(2n-1)pi, ` where n = 1, 2, 3, ........ (b) Path difference should be, `Delta =(lambda)/(2pi)xx` Phase difference `=(lambda)/(2pi)xx(2n-1)pi` `=((2n-1)lambda)/(2)` Where, n = 1, 2, 3 ..........

Discussion

6.	One day, I saw the tree was being cut. I rushed to the site and begged the tree cutters to spare the trunk as it was the home of many a parrot. But I was laughed at and the tree fell with a great thud. I ran to the top end to see two just hatched chicks thrown out of their nest and smashed to death. I looked into all the nests and saw smashed eggs in two of them and one little chick in the other one. Fortunately, the little one survived the fall. I brought it home. The chick can be identified as a parrot only by the shape and colour of its beak. No feathers had come out. I carefully fed it with milk and within two weeks it began to eat bananas, and two months later, it started to fly and I let him fly away. But he would not fly long. He used to linger on the coconut trees in our compound and when I reached home from school, he would fly down and land on my head ! I would show him my finger and he would jump on to it from my head and drink the milk I offered him in a little plate. By putting the sharp end of the upper beak stationary in the plate, he would drink the milk by moving his tongue and lower beak to and fro. Then he would fly on to my shoulder and eat paddy from my palm. Do you think, we have deprived the birds of their natural habitats ? What are its effects ?
Answer» Yes, we have deprived the birds of their natural habitat and its effects are adverse. When we cut a tree, we destroy the shelter of the birds and animals. It leads to the death of small birds, chicks, etc., resulting in decrease in the number of birds.

Discussion

7.	One day, I saw the tree was being cut. I rushed to the site and begged the tree cutters to spare the trunk as it was the home of many a parrot. But I was laughed at and the tree fell with a great thud. I ran to the top end to see two just hatched chicks thrown out of their nest and smashed to death. I looked into all the nests and saw smashed eggs in two of them and one little chick in the other one. Fortunately, the little one survived the fall. I brought it home. The chick can be identified as a parrot only by the shape and colour of its beak. No feathers had come out. I carefully fed it with milk and within two weeks it began to eat bananas, and two months later, it started to fly and I let him fly away. But he would not fly long. He used to linger on the coconut trees in our compound and when I reached home from school, he would fly down and land on my head ! I would show him my finger and he would jump on to it from my head and drink the milk I offered him in a little plate. By putting the sharp end of the upper beak stationary in the plate, he would drink the milk by moving his tongue and lower beak to and fro. Then he would fly on to my shoulder and eat paddy from my palm. Describe how did the boy save the life of a chick ?
Answer» But taking it home and feeding it carefully, the boy saved the life of a chick.

Discussion

8.	One day, I saw the tree was being cut. I rushed to the site and begged the tree cutters to spare the trunk as it was the home of many a parrot. But I was laughed at and the tree fell with a great thud. I ran to the top end to see two just hatched chicks thrown out of their nest and smashed to death. I looked into all the nests and saw smashed eggs in two of them and one little chick in the other one. Fortunately, the little one survived the fall. I brought it home. The chick can be identified as a parrot only by the shape and colour of its beak. No feathers had come out. I carefully fed it with milk and within two weeks it began to eat bananas, and two months later, it started to fly and I let him fly away. But he would not fly long. He used to linger on the coconut trees in our compound and when I reached home from school, he would fly down and land on my head ! I would show him my finger and he would jump on to it from my head and drink the milk I offered him in a little plate. By putting the sharp end of the upper beak stationary in the plate, he would drink the milk by moving his tongue and lower beak to and fro. Then he would fly on to my shoulder and eat paddy from my palm. Find out the words from the extract which mean : (i) neatly (ii) stay for longer
Answer» (i) carefully (ii) linger on

Discussion

9.	They whisper like drizzles as they roam the streets with a lost graze as though something they had thrown up never returned to earth. They shiver like December nights in their dreamless sleep on shop verandahs. Why do the old women in this extract roam the streets?
Answer» The old women roam the streets to whisper.

Discussion

10.	They whisper like drizzles as they roam the streets with a lost graze as though something they had thrown up never returned to earth. They shiver like December nights in their dreamless sleep on shop verandahs. Pick out the expressions from the extract showing the sad situation of the old women.
Answer» lost gaze whisper like drizzles shiver like December nights dreamless sleep

Discussion

11.	They whisper like drizzles as they roam the streets with a lost graze as though something they had thrown up never returned to earth. They shiver like December nights in their dreamless sleep on shop verandahs. What would you like to do for the betterment of the old people?
Answer» In order to save the old people from being alone, people or their children should be made aware about love and care they require at this age. If they are sent to old-age homes, they should be visited often. So that, they would not feel alone.

Discussion

12.	मुहावरों के अर्थ लिखकर वाक्यों में प्रयोग कीजिए हिदायत देना ।
Answer» हिदायत देना - निर्देश देना । वाक्य - माँ - बाप हमेशा अपने बच्चो के उज्जवल भविष्य की खातिर जो हिदायते देते है उन्हें बच्चो को कभी अनसुना नहीं करना चाहिए ।

Discussion

13.	A flat curve an a highway has a radius of curvature 400 m. A car goes around a curve at a speed of 32 m//s. What is the minimum value of coefficient of friction that will prevent the car from sliding ? `(g=9.8 m//s^(2))`
Answer» Given: `r = 400m, v=32 m//s` Maximum safety speed of car along curved horizontal road to prevent sliding is `v=sqrt(mu rg)` `32^(2)=mu xx 400 xx 9.8` [Squaring on both sides] `mu=((32)^(2))/(400xx9.8)` `mu=0.261`

Discussion

14.	Calculate the work done in increasing the radius of a soap bubble in air from 1 cm to 2 cm. The surface tension of soap solution is 30 dyne/cm. `(pi=3.142)`
Answer» Given : Initial radius of soap bubble `(r_(1))=1 cm` `=1xx10^(-2)m` Final radius of soap bubble `(r_(2))` `=2cm=2xx10^(-2)m` Surface tension (T) `=30 ` dyne/cm `=(30xx10^(-5)N)/(10^(-2)m)=30xx10^(-3)N//m` We know that, Work done = T.dA `=30xx 10^(-3)xx4pi xx [2^(2)-1^(2)]xx10^(-4)xx2` `=2.262 xx 10^(-4)` joule

Discussion

15.	Define : (a) Antiseptics (b) Antioxidants
Answer» (1) Drugs which are applied to the living tissues to kill the bacteria and to stop their grouwth in wound, thus preventing its infection are called antiseptics. (2) Antioxidant is a substance which when added to food, retards or prevents oxidative deterioration of food.

Discussion

16.	निम्नलिखित विषयो पर टिप्पणियाँ लिखिए । सरोवर में हंस -हंसिनी की बातें ।
Answer» सरोवर में हंस - हंसिनी की बातें सरोवर में हंस - हंसिनी मंत्री की समस्या के बारे में ही बातें करते थे । हंसिनी ने हंस की उदासी का कारन पूछा । हंस ने उसे बताया कि राजा के मर जाने से मंत्री जी उसके उत्तराधिकारी के बारे में चिंतित है । राजा के कोई संतान न होने से मंत्री जी के लिए यह समस्या थी कि वे सिंहासन पर किसे बिठाए ? हंसिनी ने कहा कि इसमें चिंता की कोई बात नहीं है आखिर देश की असली मालिक तो प्रजा ही है । हंस ने कहा कि प्रजा में तो लाखो लोग है । राज - काज सँभालने के लिए तो कुछ लोग ही चाहिए । इस पर हंसिनी का कहना थे कि प्रजा में से कुछ होशियार व्यक्ति चुने जाएं । वे प्रजा की ओर से राज - काज संभाले । चिंता से छुटकारा पाने के लिए मंत्री जी को यही तरीका अपनाना चाहिए ।

Discussion

17.	निम्नलिखित प्रश्नो के उत्तर दीजिए : रैदास जी ने प्रभु के प्रति अपना भक्तिभाव किन दृस्टांतो द्वारा स्पष्ट किया है ?
Answer» कवि रैदास जी भगवान श्रीराम के परम भक्त है । वे निरंतर राम नाम की माला जपते रहते है । वे हमेशा राम से जुड़े रहना चाहते है । इसलिए वे कहते है कि यदि राम चन्दन है तो वे पानी जिसका उपयोग चन्दन घिसते समय किया जाता है यदि प्रभु श्रीराम चन्द्रमा है तो रैदास चातक पक्षी है जिसे प्रकार चन्द्रमा को देखते हुए चातक का मन नहीं भरता उसी प्रकार ध्यान में राम के दर्शन करते हुए रैदास के मन को तृप्ति नहीं मिलती । यदि श्रीराम दीपक है तो रैदास जी खुद को बाटी मानते है जो दीपक में जलकर धन्य होती है यदि श्रीराम सोना है तो कवि रैदास जी अपने को सुहागा समझते है । यदि श्रीराम स्वामी है तो कवि रैदास जी उनके दास बनने में धन्यता अनुभव करते है । इस प्रकार विभिन्न दृष्टांतो द्वारा कवि रैदास जी ने प्रभु श्रीराम के प्रति अपनी भक्ति भाव व्यक्त किया है ।

Discussion

18.	निम्नलिखित प्रश्नो के उत्तर दीजिए : वृक्ष हमेशा किस गली को चौंकन्ना रहता है ?
Answer» कवि के घर के बहार खड़ा हुआ वृक्ष एक चौकीदार की तरह तना हुआ दिखाई देता है । बूढा होते हुए भी वह बहुत जानदार है उसकी एक सूखी दाल राफेल जैसी लगती है उसके एक दाल जो हरी-भरी है वह पत्तियों से और फूलो से लदी हुई है । वह बिलकुल उसकी पगड़ी जैसी लगती है जमीन से ऊपर उभरी हुई पेड़ की जेड पेड़ रुपी चौकीदार के फटे-पुराने जूतों जैसी प्रतीक होती है हवा चलने पर वे जूतों की तरह चरमराती है । वह पेड़ चौकीदार की तरह बहुत शक्तिशाली है चाहे धुप हो या वर्षा, उसकी सतर्कता में कोई फर्क नहीं पड़ता । इस प्रकार वह पेड़ खाकी रंग की वर्दी में एक चौकीदार की तरह चौकन्ना रहता है ।

Discussion

19.	निम्नलिखित प्रश्नो के उत्तर दीजिए : अहिंसा एक विज्ञान है इस विचार का पाठ के आधार पर विवेचना कीजिए ।
Answer» महात्मा गाँधी अहिंसक के पुजारी थे । वे अहिंसा के अस्त्र को शक्तिशाली अस्त्र - शस्त्र से भी ताकतवर शस्त्र मानते थे । वे कहा करते थे कि अहिंसा भी एक प्रकार का विज्ञान है । जिसे प्रकार विज्ञान में पदार्थो के निरीक्षण तथा निष्कर्ष पर पहुँचने की प्रक्रियाएँ होती है उसी प्रकार अहिंसा को परखने के लिए भी इस तरह की प्रक्रियाओं की आवश्यकता होती है अहिंसा की परख केवल हिंसा के माहौल में ही हो सकती है अहिंसा के वातावरण में अहिंसा की परख नहीं हो सकती । जिसे प्रकार विज्ञान के क्षेत्र में अपेक्षित परिणाम प्राप्त करने के लिए अनेक बार असफलताओं का सामना करना पड़ता है उसी प्रकार अहिंसा के क्षेत्र में भी कई बार असफलताएँ हाथ लगती है पर ये प्रक्रिया का हिस्सा होती है जिस प्रकार अहिंसा के क्षेत्र का अस्त्र चलाने का ज्ञान बहुत थोड़े लोगो को है । हिंसा का जवाब अहिंसा से देने में जो कठिनाई महसूस होती है वह मन की दुर्बलता के कारण पैदा होती है ।

Discussion

20.	निम्नलिखित प्रश्नो के उत्तर दीजिए : विवेकानंद जी ने स्वदेश भक्ति के सम्बन्ध में कौन - सा आदर्श प्रस्तुत किया है ?
Answer» विवेकानंद जी देश के युवकों से ह्रदयवान बनने का आग्रह करते है । वे कहते है कि हमारे करोड़ो देशवासी सदियों से पराधीनता सहते - सहते पशुतुल्य हो गए है । करोड़ो लोग आज भूखे मर रहे है । अज्ञान के बादलो ने देशवाशियो के मन -मस्तिष्क को ढककर रखा है । यदि देश की पराधीनता और भूखे से मरने वाले देशवाशियो की पीड़ा देखकर हमारा ह्रदय व्यथित होता है तो देशवासियो के प्रति यह हमारी सह्दयता का प्रतीक है वह सह्दयता देशभक्ति की पहली सीढ़ी है देशभक्ति का यह भाव जागने पर व्यक्ति अपने नाम, यश और सम्पत्ति को भी भूल जाता है इस प्रकार, विवेकानद जी ने स्वदेशभक्ति के सम्बन्ध में देशवासियो के प्रति सह्दयता का आदर्श प्रस्तुत किया है

Discussion

21.	निम्नलिखित प्रश्नो के उत्तर दीजिए : कार्यहीन मनुष्यो का मन शैतान का निवास स्थान होता है, पाठ के आधार पर स्पष्ट कीजिए ।
Answer» शैतान स्वभाव दूसरो को हानि पहुँचता है और उपद्रव देता है अच्छी बातो से वह परे होता है दुष्ट कार्यो में उसे आनंद मिलता है कार्यहीन मनुष्य के चंचल मन में तरह - तरह के उपद्रवी विचार आते है । उद्योगप्रियता मनुष्य के मन को किसी-न-किसी उधोग में उलझाएँ रखती है और उसके मन को स्थिरता प्रदान करती है उधोग में प्रवृति मनुष्य के मन को इधर-इधर भटकने का अवसर ही नहीं मिलता । सिर्फ अपने कार्य के बारे में ही सोचता है । कार्य में आने वाली बाधाओं को दूर करने के उपाय खोजता है । कार्य में सफल होने की आशाएँ और कल्पनाएँ उसके मन को घेरे रहती है कार्यहीन व्यक्ति के पास आलस्यपूर्वक समय बिताने के अतिरिक्त और कोई गतिविधी नहीं होती । वह पड़े - पड़े हवाई किले बढ़ता रहता है । ईर्ष्या - द्वेष की भावनाओं से उसका मन घिरा होता है परोपकार के विचार उसके मन को कभी छूते नहीं है । वह सिर्फ दूसरो को सताने और उनके काम बिगाड़ने के बारे में ही लगा रहता है । इस प्रकार कार्यहीन मनुष्यो का मन शैतान का निवास स्थान होता है ।

Discussion

22.	निम्नलिखित गद्यांशों को पढ़कर नीचे दिए प्रश्नो के उत्तर लिखिए : ' सांभा - साहब कल रात यह भेड़िया धने जंगलो में पेड़ काटता पाया गया । आपके हुक्म से लोग हजारो पेड़ लगा रहे है लेकिन यह पापी उन पेड़ो को काटकर बेच देता है ।' प्रस्तुत अवतरण किसने कहा है ?
Answer» प्रस्तुत अवतरण नंबरदार शम्भा ने सरपंच गबरुसिहं से कहा है ।

Discussion

23.	निम्नलिखित पद्यांशों को पढ़कर नीचे दिए प्रश्नो के उत्तर लिखिए : ' जो तोको काँटा बुवै, ताहि बोय तू फूल । तोहि फूल को फूल है, वाको है तिरसूल ।।' इस दोहे में क्या बोने को कहा है ?
Answer» इस दोहे में अपने रस्ते में काँटा बोने वालो के रस्ते में फूल बोने के लिए कहा है ।

Discussion

24.	निम्नलिखित पद्यांशों को पढ़कर नीचे दिए प्रश्नो के उत्तर लिखिए : ' जो तोको काँटा बुवै, ताहि बोय तू फूल । तोहि फूल को फूल है, वाको है तिरसूल ।।' हमारे लिए काँटा बोने वाले के लिए फूल बोने पर हमें क्या मिलेगा ?
Answer» हमारे लिए काँटा बोने वाले के लिए फूल बोने पर हमें फूल मिलेंगे अर्थात भलाई के बदले भलाई मिलेगी ।

Discussion

25.	निम्नलिखित पद्यांशों को पढ़कर नीचे दिए प्रश्नो के उत्तर लिखिए : मेरी हर देश की जय हो स्वार्थभाव का क्षण - क्षण क्षय हो , जल - जलकर जीवन दूँ जग को, ltbr gt बस इतना सम्मान चाहिए । किसकी जय जो ?
Answer» कवि देश की जय चाहते है ।

Discussion

26.	निम्नलिखित पद्यांशों को पढ़कर नीचे दिए प्रश्नो के उत्तर लिखिए : ' जो तोको काँटा बुवै, ताहि बोय तू फूल । तोहि फूल को फूल है, वाको है तिरसूल ।।' काँटा बोने पर कांटे से क्या मिलेगा ?
Answer» काँटा बोने पर कांटे से त्रिशूल अर्थात बुराई मिलेगा ।

Discussion

27.	The process in which the value of `Delta U=0` is :A. AdiabaticB. IsothermalC. IsobaricD. Isochoric
Answer» Correct Answer - B

Discussion

28.	An ionic crystal lattice has `(r^(+))/(r^(-))` radius ratio of 0.320, its co-ordination number is :A. 3B. 4C. 6D. 8
Answer» Correct Answer - B

Discussion

29.	What is the action of chlorine on : (a) `CS_(2)` (b) Excess `NH_(3)`
Answer» (a) `CS_(2)+3Cl_(2)rarr C Cl_(4)+S_(2)Cl_(2)` (b) `NH_(3)+3Cl_(2)rarr NCl_(3)+3HCl`

Discussion

30.	Write balanced chemical equations for the following : (a) Phosphorus reacts with magnesium. (b) Flowers of sulphur boiled with calcium hydroxide. (c ) Action of ozone on hydrogen peroxide.
Answer» (a) `6Mg+P_(4)to 2Mg_(3)P_(2)` (b) `3Ca(OH)_(2)+12Sto CaS_(5)+underset(("Calcium thiosulphate"))(CaS_(2)O_(3))+3H_(2)O` (c ) `H_(2)O_(2)+O_(3)to H_(2)O+2O_(2)`

Discussion

31.	Write balanced chemical equations for the conversion of `CrO_(4)^(2-)` to `Cr_(2)O_(7)^(2-)` in acidic medium and `Cr_(2)O_(7)^(2-)` to `CrO_(4)^(2-)` in basic medium.
Answer» In acids medium `2K_(2)CrO_(4)+2HCl rarr K_(2)Cr_(2)O_(7)+2KCl+H_(2)O` In basic medium `K_(2)Cr_(2)O_(7)+2KOH rarr 2K_(2)CrO_(4)+H_(2)O` `rArr underset(("Orange-red"))(Cr_(2)O_(7)^(2-))+H_(2)OhArr underset(("Yellow"))(2CrO_(4)^(2-))+2H^(+)`

Discussion

32.	The reaction `A+B to` products is first order in each of the reactants. (a) How does the rate of reaction change if the concentration of A is increased by factor 3 ? (b) What is the change in the rate of reaction if the concentration of A is halved and concentration of B is doubled ?
Answer» (a) `A+B to` Product Rate = K [A] [B] If concentration of A is increased by factor 3 then rate also increases 3 times. (b) If concentration of A is halved and concentration of B is doubled then rate remains unchanged.

Discussion

33.	Write the molecular and structural formulae of : (a) Thiosulphuric acid (b) Dithionous acid
Answer» (a) Thiosulphuric acid `(H_(2)S_(2)O_(3))` `HO-overset(S)overset("\|\|")underset(O)underset("\|\|")(S)-OH` (b) Dithionous acis `(H_(2)S_(2)O_(4))` `HO-overset(O)overset("\|\|")(S)-overset(O)overset("\|\|")(S)-OH`

Discussion

34.	मुहावरों के अर्थ लिखकर वाक्यों में प्रयोग कीजिए पैरो पर लौटना \|
Answer» पैरो पर लौटना - प्रभावित होना, शरण में आना । वाक्य निरामय संस्कृति के मामले में दुनिया अपने भारत देश के पैरो पर लोटती है ।

Discussion

35.	मुहावरों के अर्थ लिखकर वाक्यों में प्रयोग कीजिए डींग हाँकना ।
Answer» डींग हाँकना - बढ़ा - चढ़ाकर बातें करना वाक्य कुछ लोग अपनी डींग हांकने की आदत से मुसीबत में फंस जाते है ।

Discussion

36.	मुहावरों के अर्थ लिखकर वाक्यों में प्रयोग कीजिए दिमाग सातवें आसमान पर होना ।
Answer» दिमाग सातवें आसमान पर होना - अत्यधिक अभिमान होना । वाक्य - अपनी अमीरी की वजह से सोनू का दिमाग हमेशा दिमाग सातवें आसमान पर है ।

Discussion

37.	In stationary wave, the distance between a node and its adjacent antinode is ……….A. `lambda`B. `(lambda)/(4)`C. `(lambda)/(2)`D. `2lambda`
Answer» Correct Answer - B

Discussion

38.	If the source is moving away from the observer, then the apparent frequency …………..A. will increaseB. will remain the sameC. will be zeroD. will decrease
Answer» Correct Answer - D

Discussion

39.	A particle of mass m performs vertical motion in a circle of radius r. Its potential energy at the highest point is ….. ` " " `( g is acceleration due to gravity)A. 2 mgrB. mgrC. 0D. 3 mgr
Answer» Correct Answer - A

Discussion

40.	The phase difference between displacement and acceleration of a particle performing S.H.M. isA. `2pi` radB. `(pi)/(2)` radC. `pi` radD. `(pi)/(4)` rad
Answer» Correct Answer - C

Discussion

41.	The reflected waves from on ionsphere are ………..A. ground wavesB. sky wavesC. space wavesD. very high frequency waves
Answer» Correct Answer - B

Discussion

42.	The average kinetic energy of a molecule of a gas at absolute temperature T is proportional toA. `((3)/(2))` RTB. `((3)/(2))K_(B)T`C. `((2)/(3))R T`D. `((3)/(2)) ((RT)/(M))`
Answer» Correct Answer - B

Discussion

43.	A capacitor of capacitance 0.5 `muF` is connected to a source of alternating e.m.f. of frequency 100 Hz. What is the capacitive reactance? `(pi=3.142)`
Answer» Given, `C=0.5mu F=0.5xx10^(-6)F=5xx10^(-7)F, f=100Hz, pi=3.142` Capacitive reactance, `X_(c)=(1)/(2pi fC)` `=(1)/(2xx3.142xx100xx5xx10^(-7))` `=3182.66Omega ~~3.182k Omega`

Discussion

44.	A thin ring has mass 0.25 kg and radius 0.5 m. Its moment of inertia about an axis passing through its centre and perpendicular to its plane is ………… .A. `0.0625 kg m^(2)`B. `0.625 kg m^(2)`C. `6.25 kg m^(2)`D. `62.5 kg m^(2)`
Answer» Correct Answer - A

Discussion

45.	State the assumptions of the kinetic theory of gases.
Answer» Assumptions of kinetic theory of gases : 1. Nature of gas molecules : (a) A gas consists of very large number of tiny particles called molecules . (b) The molecules are rigid and perfectly elastic spheres of very small diameters i.e., `10^(-10)m`. 2. Random motion of gas molecules : (a) The molecules are always in a state of random motion. This state is also called as molecular chaos. (b) Between any two successive collisions, the molecule follows a straight line path with constant velocity known as free path.

Discussion

46.	The electron in the hydrogen atom is moving with a speed of `2.5 xx 10^(6)` m/s in an orbit of radius 0.5 `Å`. Magnetic moment of the revolving electron is
Answer» Given : `v=2.3xx10^(6)m//s, r=0.53 "Å"=0.53 xx10^(-10)m` Time period of revolution is given by, `T=(2pi r)/(v)` Substituting the value, we get `T=(2xx3.14 xx0.53xx10^(-10))/(2.3xx10^(6))` `T=(1.06xx3.142xx10^(-16))/(2.3)` `=(3.33052xx10^(-16))/(2.3)` `T=1.448xx10^(-16)s`

Discussion

47.	Define magnetization. Write its S.I. unit and dimensions.
Answer» Magnetization : The net magnetic dipole moment per unit volume is called as the magnetization `(vecM_(z)).` Magnetization `=("Net magnetic moment")/("Volume")` i.e., `vec M_(z)=(vecM_("net"))/("Volume")` The S.I. unit is `Am^(-1).` The dimensions are `[M^(0)L^(-1)T^(0)I^(1)]`.

Discussion

48.	In a biprism experiment, light of wavelength 5200 Å is used to get an interference pattern on the screen. The fringe width changes by 1.3 mm when the screen is moved towards biprism by 50 cm. Find the distance between two virtual image of the slit.
Answer» Given, `lambda=5200"Å"=5.2 xx 10^(-7)m` `X_(1)-X_(2)=1.3 mm =1.3 xx 10^(-3)m` `D_(1)-D_(2)=50cm=0.5m` We know that, `X_(1)-X_(2)=(lambda D_(1))/(d)-(lambda D_(2))/(d)` `X_(1)-X_(2)=(lambda)/(d)(D_(1)-D_(2))` `therefore d=(lambda(D_(1)-D_(2)))/(X_(1)-X_(2))` `=(5.2xx10^(-7)xx0.5)/(1.3xx10^(-3))` `=0.002 m` `=0.2 mm`

Discussion

49.	Prepare a paragraph with an appropriate title to be used for the Counter-View Section on the following topic in about 120 words : 'Facebook is a user-friendly device.' You may take help of the following points included in the View Section :
Answer» FACEBOOK IS NOT A USER-FRIENDLY DEVICE Social media is one of the most famous platform now-a-days. Everybody is using it in order to stay connected with their friends and relatives. But, it cannot be called as a user-friendly device. It has many disadvantages as far as its usage is concerned. It allows people to share information to this, such social sites lead to hacking of the personal profiles of the people. Though it allows the users to create a profile page which interrelates with friends and relative, it is low on the security levels. On the whole, facebook is not a friendly device and needs to be avoided by the people.

Discussion

50.	Imagine that your college arranged a Cleanliness Drive in which your Principal, a social activist, a local MLA, doctors, teachers and students participated on a large scale. The event was a grand success as it made people aware of cleanliness and social hygiene. Prepare a short report for your college magazine with the help of the following points : Venue, chief guest, inauguration, unique participation and conclusion.
Answer» CLEANLINESS DRIVE The Swachh Bharat Abhiyan was conducted on 2nd October, 20XX in Vibgyor International School, Nagpur, under the able guidance of our honourable Principal, Dr. Surendra Dass. The chief guest for the event was the MLA, Mr. Arun Awasthi, who inaugurated the event. The participation seemed to be a unique one because along with the students and the teachers, there were doctors and social activists. Everybody participated enthusiastically and actively performed the drive. The chief guest had enlightened the students and the staff with his words of wisdom. The event was a grand success as it made people aware of the cleanliness and social hygiene.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

How glucose is prepared from cane sugar ? Write the formula of the complex copper (II) hexacyano ferrate (II).

State the conditions for constructive and destructive inter-ference of light.

They whisper like drizzles as they roam the streets with a lost graze as though something they had thrown up never returned to earth. They shiver like December nights in their dreamless sleep on shop verandahs. Why do the old women in this extract roam the streets?

They whisper like drizzles as they roam the streets with a lost graze as though something they had thrown up never returned to earth. They shiver like December nights in their dreamless sleep on shop verandahs. Pick out the expressions from the extract showing the sad situation of the old women.

They whisper like drizzles as they roam the streets with a lost graze as though something they had thrown up never returned to earth. They shiver like December nights in their dreamless sleep on shop verandahs. What would you like to do for the betterment of the old people?

मुहावरों के अर्थ लिखकर वाक्यों में प्रयोग कीजिए हिदायत देना ।

A flat curve an a highway has a radius of curvature 400 m. A car goes around a curve at a speed of 32 m//s. What is the minimum value of coefficient of friction that will prevent the car from sliding ? `(g=9.8 m//s^(2))`

Calculate the work done in increasing the radius of a soap bubble in air from 1 cm to 2 cm. The surface tension of soap solution is 30 dyne/cm. `(pi=3.142)`

Define : (a) Antiseptics (b) Antioxidants

निम्नलिखित विषयो पर टिप्पणियाँ लिखिए । सरोवर में हंस -हंसिनी की बातें ।

निम्नलिखित प्रश्नो के उत्तर दीजिए : रैदास जी ने प्रभु के प्रति अपना भक्तिभाव किन दृस्टांतो द्वारा स्पष्ट किया है ?

निम्नलिखित प्रश्नो के उत्तर दीजिए : वृक्ष हमेशा किस गली को चौंकन्ना रहता है ?

निम्नलिखित प्रश्नो के उत्तर दीजिए : अहिंसा एक विज्ञान है इस विचार का पाठ के आधार पर विवेचना कीजिए ।

निम्नलिखित प्रश्नो के उत्तर दीजिए : विवेकानंद जी ने स्वदेश भक्ति के सम्बन्ध में कौन - सा आदर्श प्रस्तुत किया है ?

The process in which the value of `Delta U=0` is :A. AdiabaticB. IsothermalC. IsobaricD. Isochoric

An ionic crystal lattice has `(r^(+))/(r^(-))` radius ratio of 0.320, its co-ordination number is :A. 3B. 4C. 6D. 8

What is the action of chlorine on : (a) `CS_(2)` (b) Excess `NH_(3)`

Write balanced chemical equations for the following : (a) Phosphorus reacts with magnesium. (b) Flowers of sulphur boiled with calcium hydroxide. (c ) Action of ozone on hydrogen peroxide.

Write balanced chemical equations for the conversion of `CrO_(4)^(2-)` to `Cr_(2)O_(7)^(2-)` in acidic medium and `Cr_(2)O_(7)^(2-)` to `CrO_(4)^(2-)` in basic medium.

The reaction `A+B to` products is first order in each of the reactants. (a) How does the rate of reaction change if the concentration of A is increased by factor 3 ? (b) What is the change in the rate of reaction if the concentration of A is halved and concentration of B is doubled ?

Write the molecular and structural formulae of : (a) Thiosulphuric acid (b) Dithionous acid

मुहावरों के अर्थ लिखकर वाक्यों में प्रयोग कीजिए पैरो पर लौटना |

मुहावरों के अर्थ लिखकर वाक्यों में प्रयोग कीजिए डींग हाँकना ।

मुहावरों के अर्थ लिखकर वाक्यों में प्रयोग कीजिए दिमाग सातवें आसमान पर होना ।

In stationary wave, the distance between a node and its adjacent antinode is ……….A. `lambda`B. `(lambda)/(4)`C. `(lambda)/(2)`D. `2lambda`

If the source is moving away from the observer, then the apparent frequency …………..A. will increaseB. will remain the sameC. will be zeroD. will decrease

A particle of mass m performs vertical motion in a circle of radius r. Its potential energy at the highest point is ….. ` " " `( g is acceleration due to gravity)A. 2 mgrB. mgrC. 0D. 3 mgr

The phase difference between displacement and acceleration of a particle performing S.H.M. isA. `2pi` radB. `(pi)/(2)` radC. `pi` radD. `(pi)/(4)` rad

The reflected waves from on ionsphere are ………..A. ground wavesB. sky wavesC. space wavesD. very high frequency waves

The average kinetic energy of a molecule of a gas at absolute temperature T is proportional toA. `((3)/(2))` RTB. `((3)/(2))K_(B)T`C. `((2)/(3))R T`D. `((3)/(2)) ((RT)/(M))`

A capacitor of capacitance 0.5 `muF` is connected to a source of alternating e.m.f. of frequency 100 Hz. What is the capacitive reactance? `(pi=3.142)`

A thin ring has mass 0.25 kg and radius 0.5 m. Its moment of inertia about an axis passing through its centre and perpendicular to its plane is ………… .A. `0.0625 kg m^(2)`B. `0.625 kg m^(2)`C. `6.25 kg m^(2)`D. `62.5 kg m^(2)`

State the assumptions of the kinetic theory of gases.

The electron in the hydrogen atom is moving with a speed of `2.5 xx 10^(6)` m/s in an orbit of radius 0.5 `Å`. Magnetic moment of the revolving electron is

Define magnetization. Write its S.I. unit and dimensions.

In a biprism experiment, light of wavelength 5200 Å is used to get an interference pattern on the screen. The fringe width changes by 1.3 mm when the screen is moved towards biprism by 50 cm. Find the distance between two virtual image of the slit.

Prepare a paragraph with an appropriate title to be used for the Counter-View Section on the following topic in about 120 words : 'Facebook is a user-friendly device.' You may take help of the following points included in the View Section :