Every textbook question, solved the way the board expects.
Popular board questions
See all →- 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
- 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 ,... 2
- 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... 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 numb... 1
- 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
Recently answered
See all →- Find the rate of change of demand (\(x\)) of a commodity with respect to its price (\(y\)) if \(y=\frac{5x+7}{2x-13}\) Answer: dx/dy=-(2x-13)²/79 By the quotient rule, dy/dx=(2x-13)(5)-(5x+7)(2)/(2x-13)²=10x-65-10x-14/(2x-13)²=-79/(2x-13)² . The rate of chang... 1
- Draw a circle with centre O and radius 3.5 cm. Draw tangents PA and PB from an external point P such that the angle between them is 60°. Also find the length of PO and of each tangent segment. Answer: ∠ AOB = 120^° ; PO = 7 cm and PA = PB = 3.5√(3) ≈ 6.1 cm. Analysis: In square OAPB , ∠ A = ∠ B = 90^° , so ∠ AOB = 360^° - 180^° - 6... 1
- \(\Delta PQR \sim \Delta PMN\). In \(\Delta PQR\), QR = 5.4 cm, \(\angle Q = 60^\circ\), \(\angle R = 45^\circ\), and \(\dfrac{QR}{MN} = \dfrac{3}{4}\). Construct \(\Delta PQR\) and \(\Delta PMN\). Answer: Δ PMN has MN = 7.2 cm, ∠ M = 60^° , ∠ N = 45^° . Analysis: Corresponding angles of similar triangles are equal: ∠ M = ∠ Q = 60^° , ∠... 1
- \(\Delta XYZ \sim \Delta XLM\). In \(\Delta XYZ\), XY = 4.8 cm, YZ = 5.6 cm and XZ = 4.2 cm, and \(\dfrac{XY}{XL} = \dfrac{4}{3}\). Construct \(\Delta XYZ\) and \(\Delta XLM\). Answer: Δ XLM has XL = 3.6 cm, LM = 4.2 cm, XM = 3.15 cm. Analysis: XY/XL = YZ/LM = XZ/XM = 4/3 . XL = 3 × 4.8/4 = 3.6 cm, LM = 3 × 5.6/4 =... 1
- Draw a circle with centre O and radius 3.4 cm. Draw a chord AB of length 6 cm. Draw tangents at A and B and let them meet at P. Measure \(\angle APB\) and \(\angle AOB\). What do you observe? Answer: ∠ AOB ≈ 124^° and ∠ APB ≈ 56^° ; they add up to 180°, and PA = PB. Steps of construction: Draw a circle with centre O, radius 3.4 cm... 1
- Draw a circle with centre C and radius 3 cm. Take point P such that CP = 7 cm and draw tangents from P. Measure the tangent segments and verify by calculation. Answer: Two tangents PA and PB, each about 6.3 cm. Steps of construction: Draw a circle with centre C and radius 3 cm. Take point P such tha... 1
Latest notes
See all →- SSC Class 10 Board Exam 2027: 4-Month Study Plan (Nov–Feb) A month-by-month plan for the Maharashtra SSC board exam 2027: daily routine, subject-wise tips, how to use board papers, and free practice...
- Government Exams for Maharashtra Students: Calendar for November 2026 to March 2027 Upcoming govt exams after 10th, 12th and graduation for Maharashtra students: dates, official sources, eligibility and which exams are in Ma...
- CTET December 2026: Exam Pattern, Syllabus, Marathi Option and 45-Day Preparation Plan CTET on 12–13 Dec 2026: Paper 1 vs Paper 2, 150 Q with no negative marking, Marathi as Language I/II, syllabus by section, CDP tips and a 45...
- Maharashtra Police Bharti 2026 Written Exam: Pattern, Syllabus and How Marks Are Combined Maharashtra Police Bharti: 15,631 posts, 100-mark 90-minute Marathi written test, section-wise syllabus, physical + written merit, and a 30-...
- MPSC Group C 2026 (Including Talathi): Exam Date, Pattern, Syllabus and 60-Day Plan MPSC Group C 2026 (Advt 017/2026) with Talathi: 5,707 posts as reported, Prelims on 3 Jan 2027, 100 Q pattern, syllabus and a 60-day plan.
- SBI Clerk 2026 for Maharashtra: 1,718 Posts, Marathi Language Test, Exam Pattern and Study Plan SBI Clerk 2026 has 1,718 Maharashtra posts. Marathi language test, Prelims and Mains pattern, syllabus and a 30-day Mains plan.