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See all →- Niobium forms bcc structure the density of niobium is 8.55 g/cm3 and length of unit cell edge Answer: In 0.5 g of niobium there are 1.62×10²¹ unit cells and 3.24×10²¹ atoms. Given: bcc so n = 2 atoms per unit cell, ρ = 8.55\ g cm⁻³, a... 2
- A and B each have certain number of oranges. A says to B, “ if you give me 10 of your oranges, Suppose A has x no. of oranges and B has y no. of oranges. According to the given conditions, we have x+10=2(y−10)⇒x−2y+30=0 (i) and, y+10=x... 1
- std 10th maharashtra board science part 1 gravitation notes Answer: Gravitation (Std 10 Science Part 1, Chapter 1) - solved exercise notes. 1. Match the entries and rewrite them in correct rows Quanti... 2
- M.In two moles of acetaldehyde (CH3 CHO) calculate the following a. Number of moles of carbon b. Number of moles of hydrogen Answer: (a) 4 mol C, (b) 8 mol H, (c) 2 mol O, (d) 1.2044 × 10²⁴ molecules Molecular formula of acetaldehyde: CH₃CHO = C₂H₄O. One molecule (... 1
- The density of iridium is 22.4 g/cm3 . The unit cell of iridium is fcc. Calculate the radius of iridium atom. Molar mass of iridium is 192.2 g/mol. Answer: Radius of iridium atom r ≈ 136\ pm (edge length a ≈ 385\ pm) Given: ρ = 22.4\ g cm⁻³, M = 192.2\ g mol⁻¹, fcc unit cell so n = 4 ato... 1
- E. A student used a carbon pencil to write his homework. The mass of this was found to be 5 mg. With the help of this calculate. Given: mass of carbon = 5mg = 5× 10⁻³ g Atomic mass of carbon=12u Solution :: a. The number of moles of carbon in his homework writing numbe... 1
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See all →- Match the Columns :Column ‘A’Column ‘B’Refractive index of water(a) 1.31(b) 1.36(c) 1.33 Answer: Refractive index of water – (c) 1.33 The absolute refractive index of water is 1.33, of glass about 1.5 and of diamond 2.42. It is t... 2
- About all The method Calculation Can u pls solve this all bez I am just confused All the sums And give me ans in both of the 2 method Here are all six equations of Practice Set 2.3, each solved by both methods: completing the square and the formula method. Both methods alwa... 1
- Give me objective in Marathi बारावी कला, इतिहास: महत्त्वाचे बहुपर्यायी प्रश्न (objective) मराठीत. योग्य पर्याय निवडा. उत्तरे शेवटी दिली आहेत. प्रबोधन (Renaissance) काळाच... 1
- Which question is IMP for board These are the important (IMP) questions of Life Processes in Living Organisms Part 1, the ones that keep coming back in board papers. Every... 1
- What does the poet pray to the Almighty for? The poet prays to the Almighty (God, the Father) to awaken his country into a ‘heaven of freedom’ – a nation where people are fearless, self... 2
- With a neat circuit diagram, explain the operation of an NPN transistor as a switch. In such a circuit \(V_{CC}=12\) V, \(R_C=1\) kΩ, \(\beta=100\) and \(V_{CE(sat)}=0.2\) V; find the collector saturation current and the minimum base current needed t… Answer: I_(C(sat)) = 11.8\ mA and I_(B(min)) = 118\ μA. Circuit An NPN transistor is connected in common-emitter mode. The load (R_C, or a l... 1
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See all →- Tourism, Transport and Communication Class 10 Notes, Questions | SSC Geography SSC Class 10 Geography Ch 9 notes: tourism, transport and communication in India and Brazil, IST vs BRT, key terms and exam Q&As.
- Economy and Occupations Class 10 Notes, Questions | SSC Geography SSC Class 10 Geography Chapter 8 notes: India vs Brazil economy, sectors, 2016 GDP data, agriculture, mining, fishing, key terms and exam qu...
- Human Settlements Class 10 Notes, Questions | SSC Geography SSC Class 10 Geography Chapter 7 Human Settlements notes: nucleated vs dispersed settlements, urbanisation in India and Brazil, terms and ex...
- How to Use NEET Previous Year Questions: A 4-Month Plan A month-by-month plan to use NEET previous year questions: unit-wise practice, timed sectionals, full mocks, a mistake notebook and a syllab...
- NEET Previous Year Papers 2016–2025: What 10 Years of Questions Show We tagged 2,060 questions from official NEET papers 2016–2025. See which Physics, Chemistry and Biology units grew or shrank, and what staye...
- Topics Removed from the NEET Syllabus (and How Many Questions They Had) All topics removed from the NEET syllabus, with how many questions each had in official 2016–2025 papers, and how to practise old papers.