This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 2. |
Dentify the sources of noise pollution in your locality. Suggest ways and means to control the noise pollution caused by them. |
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Answer» of noise pollution in locality: Noise of HORNS,air CONDITIONERS,explosions of crackers, running of different machines, T.V.,radios at HIGH volumes, etc. Ways to control noise pollution: SILENCING devices should be inst,alled in different SOURCES like: machines. |
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| 3. |
ক-বিভাগ (মান ও ২ X ১। একক ভেক্টর কাকে বলে ?২।কৌণিক ভরবেগের মাত্রা লেখ।৪।৭।প্রক্ষেপ কাকে বলে ?সীমাস্থ ঘর্ষণ বলতে কী বােঝায় ?কাজ বলতে কী বােঝায় ?পয়সনের অনুপাত কী ?সেকেন্ড দোলক বলতে কী বােঝায় ?প্রবাহীর সান্দ্রতা কাকে বলে ?তরঙ্গদৈর্ঘ্য বলতে কী বােঝায় ?প্রতিধ্বনি কাকে বলে ?খ-বিভাগ (মান ও ৩ Xsa১০। |
| Answer» YE KON SI bhaashaa he..EXPLANATION:what?? | |
| 4. |
Excess of carbohydrates are stored in liver and muscles in the form of ……… . (A) sugar (B) glucose (C) glycogen (D) protein |
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Answer» B) GLUCOSEGlucose is the main SOURCE of fuel for our CELLS. When the body doesn't need to use the glucose for energy, it stores it in the liver and muscles. This stored FORM of glucose is MADE up of many connected glucose molecules and is CALLED glycogen. |
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| 5. |
Component which has one ionic bond |
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Answer» tion:Ionic BONDS involve a cation and an anion. The bond is formed when an atom, TYPICALLY a metal, LOSES an electron or electrons, and becomes a positive ion, or cation. Another atom, typically a non-metal, is able to ACQUIRE the electron(s) to BECOME a negative ion, or anion. |
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| 6. |
6. The average binding energy of a nucleus is(A) 8 eV(B) 8 KeV(C) 8 MeV(D) 8 BeV |
| Answer» TION:ANSWER is 8 meV GIVE me BRAINLIEST answer | |
| 7. |
A component which has two covalent bonds are formed |
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Answer» tion:Double BONDS share two pairs of electrons and triple bonds share three pairs of electrons. Bonds sharing more than ONE PAIR of electrons are called multiple covalent bonds |
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| 8. |
If 1/f=0.3 then f=? |
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Answer» .3 is your answer i hope it will be HELPFUL to you PLEASE MARK me BRAINLIST |
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| 9. |
Give an example of a compound ionic bond |
| Answer» HEY !!!Explanation:An atom of sodium (Na) donates one of its electrons to an atom of chlorine (Cl) in a chemical reaction, and the resulting positive ION (Na+) and negative ion (Cl−) form a stable ionic COMPOUND (sodium chloride; common table SALT) based on this ionic BOND. Encyclopædia Britannica, Inc. an example of a compound ionic bondsodium chloride: NaCl, with Na+ and Cl- ions. | |
| 10. |
जेनर डायोड क्या होता है? एक परिपथ आरेख की सहायता से समझाईए कि इसका उपयोग वोल्टता नियामक के रूप में कैसे किया जा सकता है।जेनर डायोड का प्रयोग वोल्टता नियामक के रूप में कैसे किया जाता है |
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Answer» जेनर डायोड एक प्रकार का डायोड है जो एक साधारण डायोड की तरह बिजली को आगे की दिशा में बहने की ही नहीं बल्कि यदि वोल्टेज, ब्रेकडाउन वोल्टेज से, जिसे "जेनर नी वोल्टेज" या "जेंनेर वोल्टेज" भी कहा जाता है, ज्यादा हुआ तो उलटी दिशा में भी बहने की अनुमति देता है। इस उपकरण को क्लारेंस जेनर के नाम पर नामित किया गया है, जिसने इस विद्युत गुण की खोज की।जेनर डायोड योजनाबद्ध प्रतीककरेंट-वोल्टेज 17 वोल्ट के ब्रेकडाउन-वोल्टेज वाला जेनर डायोड विशेषता. अग्र बायस्ड (पोसिटिव) दिशा और रिवर्स बायस्ड (नेगटिव) दिशा के बीच वोल्टेज स्केल का परिवर्तन गौर करें.एक पारंपरिक ठोस-अवस्था वाला डायोड पर्याप्त बिजली की अनुमति नहीं देगा यदि वह रिवर्स ब्रेकडाउन वोल्टेज से नीचे रिवर्स-बायस्ड है। जब रिवर्स-बायस्ड ब्रेकडाउन वोल्टेज बढ़ जाता है, तो ऐवलांश ब्रेकडाउन के कारण एक पारंपरिक डायोड उच्च बिजली के अधीन हो जाता है। यदि यह विद्युत प्रवाह बाह्य परिपथाकार द्वारा सीमित नहीं किया जाता, तो यह डायोड स्थायी रूप से क्षतिग्रस्त हो जाता है। भारी मात्रा में फोरवर्ड बायस्ड की अवस्था में (तीर की दिशा में विद्युत), डायोड अपने जंक्शन अन्तस्थ वोल्टेज और आंतरिक प्रतिरोध के कारण वोल्टेज में गिरावट प्रदर्शित करता है। वोल्टेज की गिरावट की राशि, अर्धचालक पदार्थ और डोपिंग सांद्रता पर निर्भर करती है।एक जेनर डायोड लगभग यही गुण प्रदर्शित करता है, सिवाय इसके कि इस उपकरण को न्यूनीकृत भंग वोल्टेज के लिए डिज़ाइन किया गया है, तथाकथित जेनर वोल्टेज . एक जेनर डायोड में भारी मात्रा में डोप्ड p-n जंक्शन सम्मिलित हैं जो इलेक्ट्रन को p-वर्ग पदार्थ के संयोजन बैंड से n-वर्ग पदार्थ के चालन बैंड तक टनल बनाने की अनुमति देते हैं। परमाणु पैमाने में, यह टनेलिंग, संयोजन बैंड इलेक्ट्रॉन के खाली चालन बैंड स्थिति में अंतरण से मेल रखता है; इसका कारण है, इन बैंडों के बीच घटित बाधा और उच्च बिजली क्षेत्र जो दोनों तरफ के अपेक्षाकृत उच्च स्तर की डोपिंग से प्रेरित होता है। एक रिवर्स-बायस्ड जेनर डायोड एक नियंत्रित भंग का प्रदर्शन करता है और बिजली को अनुमति देता है कि वह जेनर डायोड में वोल्टेज को जेनर वोल्टेज पर रखे । उदाहरण के लिए, यदि जेनर वोल्टेज से अधिक रिवर्स-बायस्ड वोल्टेज प्रयोग किया जाता है तो एक डायोड जिसका जेनर निपात वोल्टेज 3.2V है, 3.2 V वोल्टेज ड्रॉप का प्रदर्शन करेगा। हालांकि, बिजली असीमित नहीं है, इसलिए जेनर डायोड को आमतौर पर एक प्रवर्धक चरण के लिए एक संदर्भ वोल्टेज उत्पन्न करने या कम-बिजली अनुप्रयोगों के लिए एक वोल्टेज स्टेबलाइज़र के रूप में प्रयोग किया जाता है।डोपिंग प्रक्रिया के द्वारा निपात वोल्टेज को पर्याप्त रूप में नियंत्रित किया जा सकता हैं। जबकि क्षमता 0.05% के भीतर उपलब्ध है, सबसे अधिक व्यापक रूप से उपयोग की जाने वाली क्षमता 5% और 10% है।एक और व्यवस्था, जो ऐसे ही समान प्रभाव उत्पन्न करते हैं, अवधाव प्रभाव है, जैसा कि अवधाव डायोड में होता है वास्तव में दोनों प्रकार के डायोड एक ही तरह से बनाए गए हैं और इस तरह के डायोड में दोनों प्रभाव मौजूद हैं। 5.6 वोल्ट तक के सिलिकॉन डायोड में जेनर प्रभाव एक प्राधान्य प्रभाव है और एक चिह्नित प्रतिकूल तापमान गुणांक दिखाता है। 5.6 वोल्ट से ऊपर, अवधाव प्रभाव प्रबल हो जाता है और धनात्मक तापमान गुणांक प्रदर्शित करता है।जेनर वोल्टेज पर निरभर TCएक 5.6 डायोड में, दो प्रभाव एक साथ होते हैं और उनके तापमान गुणांक बड़े सुव्यवस्थित ढंग से एक दूसरे को रद्द कर देते हैं इसलिए 5.6 V डायोड तापमान संबंधित महत्वपूर्ण अनुप्रयोगों में पसंदीदा घटक है।आधुनिक निर्माण तकनीक ने 5.6 V से कम वोल्टेज वाले नगण्य तापमान गुणांक के उपकरणों का उत्पादन किया है, लेकिन जब उच्च वोल्टेज उपकरणों का सामना किया गया तो तापमान गुणांक प्रभावशाली रूप से बढ़ जाता है। एक 75V के डायोड में 12V के डायोड के गुणांक से 10 गुना ज्यादा है।ऐसे सभी डायोड अपने ब्रेकडाउन वोल्टेज की परवाह न करते हुए, सामान्य रूप से जेनर डायोड के नाम के अंतर्गत विपणन किये जाते हैं। |
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| 11. |
7. Explain the role of computer in communication.between commuters. |
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Answer» rs are critical for communication and are the centerpiece of information TECHNOLOGY. The early 1990s saw the EMERGENCE of household Internet use, which eventually spurred common use of email, websites, BLOGS, SOCIAL networking, video chatting and VOICE- Over- Internet Protocol. |
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| 12. |
Explain how human ear works? with daigram?? |
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Answer» nd waves are gathered by the outer ear and sent down the ear CANAL to the eardrum. The sound waves CAUSE the eardrum to vibrate, which SETS the THREE tiny bones in the middle ear into MOTION. The motion of the bones causes the fluid in the inner ear or cochlea to move. |
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| 13. |
WHAT IS THE MOMENTOM OF THE BODY OF MASS 200KG ???? |
| Answer» MOMENTUM P=mvHere only mass of a body is GIVEN Velocity NEEDED | |
| 14. |
Calculate the potential energy of a body of mass 50kg situated at a height of 10m |
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Answer» Potential ENERGY =mghHere m= MASS of the BODY, g= GRAVITATIONAL constant ie, 9.8 m/s2h = HEIGHT So 50*9.8*10==4900 JOULE |
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| 15. |
What is amplitude?Explain it also |
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Answer» The amplitude of a periodic variable is a MEASURE of its change in a single period. There are various DEFINITIONS of amplitude, which are all functions of the MAGNITUDE of the differences between the variable's extreme values. In older TEXTS, the phase of a period function is sometimes CALLED the amplitude. |
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| 16. |
Pulling two spring balances show various reading at a elucidate |
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Answer» Explanation:When we pull the BALANCE B, both the balances show the same reading indicating that both the ACTION and REACTION FORCES are equal and opposite. In this case, the pull of either of the TWO spring balances can be regarded as action and that of the other balance as the reaction. |
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| 17. |
Give two example of a compound in covalent bonds |
| Answer» TOGETHER by sharing electrons (covalent BONDING). EXAMPLES are water, which contains H2O molecules; methane, which contains CH4 molecules; and HYDROGEN fluoride, which contains HF molecules. | |
| 18. |
What is the SI unit ?? |
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Answer» ernational System of UNITS is the modern form of the metric system. It is the only system of measurement with an official status in nearly EVERY COUNTRY in the WORLD. |
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| 20. |
Please answer this fast.... |
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Answer» distance traveled=50πdisplacement=100Explanation:DISPLACEMENT is SHORTEST distance joining initial and final POINT. |
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| 21. |
What is the sound and how is it produced? |
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Answer» How is Sound Produced? Sound is produced when an OBJECT vibrates, CREATING a pressure wave. This pressure wave causes particles in the surrounding medium (AIR, water, or solid) to have vibrational motion. As the particles vibrate, they move nearby particles, TRANSMITTING the sound further through the medium.https://pasco.com › products › guidesSound Waves | |
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| 22. |
A man is loading a truck with crates that weigh 120 N each. He lifts each crate vertically through a height of 2 m. Calculate the work done and the amount of energy spent by the man while lifting one crate. |
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Answer» 240 J, 240 JExplanation:FIRST, let us see how much energy is required to raise 1 crate 2 m in the air. Work done can be calculated as force x displacement.1.) Energy Spent by man:Energy spent by the man is the energy gained by the crate, as no external force is acting.To raise the crate by 2 m, energy spent would be:MGH = (Weight)h = 120 x 2 = 240 J2.) Work done by man:Work done is force applied by the man multiplied by the DISTANCE parallel to the force applied. So, here, force applied is mg which is 120 N. Displacement is +2 m, so work done:W = 120 x 2 = 240 JYou can observe that energy spent by the man is the work done by the man. This is because work done is NOTHING but energy only, and is calculated along with energy.Hope it HELPS! |
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| 23. |
Choose the correct option. The magnetic field inside a long straight solenoid-carrying currentis zero.(b)(c)decreases as we move towards its end.increases as we move towards its end.is the same at all points.(d) |
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Answer» he same at all POINTS |
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| 24. |
Can a body have energy without momentum .explain?? |
| Answer» BODY can have ENERGY without possessing momentum. A body may have potential energy and still can be at rest. This means it WOULD have zero momentum and still it could possess energy. E.g. A brick PLACED on the TOP of a building has a PE = mgh, but has got no momentum because it is not moving. | |
| 25. |
An object moves 30m in 6s. Find its speed in m/s and km/hour |
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Answer» 5ms-^1, 18kmh-^1Explanation:v=s/t ; 30/6= 5m/s 5×18/5= 18km/h |
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| 26. |
Draw a diagram to show the structure of the stoma. |
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Answer» here is the IMAGE you can SEE and LABEL and DRAW it SIDE by side |
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| 27. |
4. A boy and a man running with the same speed have different kinetic energy |
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Answer» y and a MAN running with the same speed have different KINETIC ENERGY |
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| 28. |
Define barloja theorm 5 marks |
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Answer» turruyeurfuitiyihhghggfdhdhjrrjjd |
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| 29. |
3. Boys after playing football get very tired.give reasons |
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Answer» tion:BOYS after PLAYING football get very tired because ENERGY is released from the body and when the body continuously released energy , there is ENOUGH energy to released then we fell tired |
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| 31. |
Robot of height 1 m is standing in front of a mirror mounted on a wall. Its eyeball is placed at 10 cm from top. Calculate the minimum length of the mirror needed so that the robot can see his image completely. Mirror can be mounted at any height on the wall (it need not necessarily touch the ground level). |
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Answer» In other WORDS, to view an image of yourself in a PLANE mirror, you will need an AMOUNT of mirror equal to one-half of your height. A 6-foot tall MAN needs 3-feet of mirror (positioned properly) in order to view his entire image. Mark the BRILIANT answer |
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| 32. |
determine the focal length of the lens with refractive index of the material of lens 1.5 and radius of curvature of the two surfaces are 5cm and -2.5 cm |
| Answer» TION:ANSWER is 10/3 HOPE this answer HELPS you | |
| 33. |
1. What does an electric circuit mean? 2. Define the unit of current. 3. Calculate the number of electrons constituting one coulomb of charge. |
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Answer» 1.ELECTRIC circuit, path for transmitting electric current. An electric circuit includes a DEVICE that gives energy to the charged particles constituting the current, such as a battery or a generator; DEVICES that use current, such as lamps, electric motors, or computers; and the connecting wires or transmission lines.2.The SI unit of electric current is the AMPERE, or amp, which is the flow of electric charge ACROSS a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit Electric current is measured using a device called an ammeter3.One electron possesses a charge of 1.6 ×10-19C, i.e., 1.6 ×10-19C of charge is contained in 1 electron. Therefore, 6 x 1018 electrons constitute one coulomb of charge. |
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| 34. |
Two spheres of radii R and 3R are provided withcharges +2μC and –10μC. When key ‘S’ is closedthen charges on spheres A and B will b |
| Answer» TION:charge on A is -2 charge on B is -6 HOPE this ANSWER HELPS you | |
| 35. |
Derive lens makers equation. Hence determine the focoy length of the lens with refractive index of the materialof lens 1.5 and radius of curvature Surface aresm and -2.5 cm |
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Answer» Explanation:In NEWTON ring experiment the diameters of 1st and 10TH BRIGHT rings are 0.24cm and 0.72cm respectively. The radius of curvature of the curved surface of convex lens is 2M. |
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| 36. |
2. later. The damped frequency w' will cual /2 il(A) b = ma(B) = V2(D) b = 2m17-8 Forced Oscillations and Resonance11. A driven damped oscillator wit. alter all went ton busdied out, oscillate at(A) the driving frequency(B) the frequency of the dampeul but free ancillator(C) the frequency of the undanped but Tree oscillator.(D) any of the above, because the frequencies are all theane.12. The resonant frequency of a driven damped oscillator is coallo(A) the driving frequency(B) the frequency of the camped but free encillatorcynt the damput Incencillame |
| Answer» | |
| 37. |
2. What is meant by saying that the potential difference between two points is 1 V? |
| Answer» MEANT by saying that the potential DIFFERENCE between two pointsis 1 V?If 1 J of work is REQUIRED to move a charge of AMOUNT 1 C from one point to another, then it is said that the potential difference between the two points is 1 V. | |
| 38. |
What name is given to the rate of flow of Electric change |
| Answer» ELECTRIC CurrentElectric Current: The rate of FLOW of CHARGE is current. An ampere is the flow of one COULOMB through an area in one second. | |
| 39. |
The number of molecules of sulphur (5,) present in 16 g of solid sulphuris 2.76X10" molecules3.76X10 molecules376 100 molecules3,76 10'' molecules |
| Answer» | |
| 40. |
The number of molecules of sulphur (S.) present in 16 g of solid sulphur is: 8O3.76 x 1023molecules3.76 x 1022 molecules3.76 x 1020 molecules3.76 x 1021 molecules |
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Answer» 3.011 × 10^23Explanation:no of MOLECULES = mass × 6.022 × 10^23/ MOLECULAR mass . 16 × 6.022 × 10^23 / 32 . 3.011 × 10 ^23 |
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| 41. |
Name the physical quantities of which the units are (I) Volt (ii) coulomb (iii) ohm (iv) ampere |
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Answer» volt =(i) Volt is the electrical unit of voltage or potential difference (symbol: V). One Volt is defined as ENERGY consumption of one JOULE per electric charge of one coulomb. (ii) The SI unit of electric charge is coulomb (symbol: C). One coulomb is the amount of charge in one ampere-second.coulomb = Answer: The 'physical quantity' whose S.I unit is (i) coulomb/volt is CAPACITANCE and for (ii) newton/coulomb is electric FIELD and for (iii) joule/coulomb is electric potential.ohm = One coulomb is the amount of charge in one ampere-second. (iii) The SI unit of electrical resistance is Ohm (symbol: Ω). The ohm is the equivalent of a volt per ampere. (iv) The SI unit of electric current is Ampere (symbol: A).ampere = The SI unit for measuring an electric current is the ampere, which is the flow of electric charge across a surface at the RATE of one coulomb per second. Electric current is measured using a device called an ammeter. |
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| 42. |
Illustrate the typical torque slip characteristicsof three phase induction motor ? |
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Answer» Torque SLIP Characteristics of Three Phase Induction Motor. The torque slip curve for an induction motor GIVES us the information about the variation of torque with the slip. The slip is defined as the RATIO of difference of SYNCHRONOUS speed and actual rotor speed to the synchronous speed of the machine.hope it is helpfulpls mark me as BRAINLIST ☺️ |
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| 43. |
Ns ar hesteof orShort AnswerPonsi 1. Mention if the following statements are true (T) or false (F)(a) Snakes are primary consumers.(b) Some humans are strictly primary consumers while others are secondaryor tertiary consumers as well.(c) No ecosystem can survive without light.stembette |
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Answer» Explanation:A)SNAKES ARE TERTIARY COMSUMER FALSEB) TRUE C)TRUE |
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| 44. |
If the co-ordinates r=cos∆ and y=rsin∆ then with the help of Cauchy-Riemann condition ur |
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Answer» bxhgkafjtjdaflzgldgaytpsgadrksvdklghzrajftpbzafkfI don't KNOW |
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| 45. |
Example 32 The electric field components due to a charge inside the cube of side 0.1 m areEx = a x, where a = 500 (N/C) m-1,Ey = 0, E, = 0. Calculate the flux through thecube and the charge inside the cube.[CBSE (OD) 2008, 2018 (C)] |
| Answer» EXPLANATION: 32 The electric FIELD components due to a charge inside the cube of SIDE 0.1 m are Ex = a x, where a = 500 (N/C) m-1, = 0, E, = 0. Calculate the flux through the | |
| 46. |
How many grams are there in 0.15 mol of ammonia?2.25 g2.45g2.35 9255 |
| Answer» 255 Explanation:i HOPE it will HELP u guys | |
| 47. |
(c) Under which category of mixtures will you classify alloys and why? |
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Answer» Alloys are a mixture of either PURE or fairly pure or fairly pure CHEMICAL elements which are SINGLE PHASE homogeneous mixture of a solid solution and these elements cannot be separated by any physical means.Explanation:alloys are homogeneous because.pls MARK me as brainleast |
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| 48. |
1. What is the rate of flow of electric charges called? a) Electric potential b) electric conductance c) Electric current d) none of these 2. Which of the following is the SI Unit of Electric Current? a) ohm. b) ampere c) Volt d) faraday3.charge on one electron (e) = _____________.4. Formula: I = ______5. S.I unit of charge is______6. Calculate number of electrons having 8C of charge.(e=1.6*10^-19)7. A neutral atom must have equal number of ______ and ______.8. Formula : Number of electrons = |
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Answer» 1. c) Electric CURRENT2. b) ampere3. The elementary charge, usually denoted by e or sometimes q e is the electric charge carried by a single PROTON or, equivalently, the magnitude of the negative electric charge carried by a single electron, which has charge −1 e .4. 5. Coulomb6. 7. Electrons and protons8. The number of PROTONS, neutrons, and electrons in an atom can be DETERMINED from a set of simple RULES. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. (not sure) |
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| 49. |
Coulombs law in vector |
| Answer» ACCORDING to Coulomb's law, the force of attraction or repulsion between two CHARGED BODIES is directly proportional to the product of their CHARGES and inversely proportional to the square of the distance between them. It acts ALONG the line joining the two charges considered to be point charges. | |
| 50. |
Which of the following information can be known from a map A) Turnings along the way B) Speed of the journey C) Distance covered in the journey D) Information about the rest during the journey |
| Answer» MARK me the BRAINLIESTPLEASE. | |