#ssc 10th
- If the market value of a share is more than its face value, the share is said to be Answer: D. at premium MV > FV means the share is at premium; MV = FV means at par; MV < FV means at discount. 1
- The rate of brokerage is 0.2%. The brokerage on shares worth ₹ 25,000 is Answer: D. ₹ 50 Brokerage = 0.2/100 × 25000 = ₹ 50 . 1
- The brokerage on a share transaction is ₹ 100. If GST on brokerage is 18%, the GST payable is Answer: C. ₹ 18 GST = 18% × 100 = ₹ 18 . 1
- A shopkeeper sells an article for ₹ 1000 within the state and charges GST at 5%. The SGST charged is Answer: A. ₹ 25 GST = 5% × 1000 = ₹ 50 . SGST is half of it: ₹ 25. 1
- The taxable value of an article is ₹ 2000 and the rate of GST is 12%. The total amount payable by the customer is Answer: C. ₹ 2240 GST = 12% × 2000 = ₹ 240 . Total = 2000 + 240 = ₹ 2240 . 1
- A trader's output tax is ₹ 5000 and his input tax credit (ITC) is ₹ 3000. The GST payable by him is Answer: B. ₹ 2000 GST payable = output tax - ITC = 5000 - 3000 = ₹ 2000 . 1
- A share of face value ₹ 10 is bought at a market value of ₹ 60. The company declares a dividend of 25%. The rate of return is (approximately) Answer: A. 4.17% Dividend per share = 25% × 10 = ₹ 2.50 . Rate of return = 2.5/60 × 100 ≈ 4.17% . 1
- 100 shares of market value ₹ 200 each are bought. The brokerage is 0.1% and GST on brokerage is 18%. The total cost of the shares is Answer: D. ₹ 20,023.60 Value = 100 × 200 = ₹ 20000 . Brokerage = 0.1% × 20000 = ₹ 20 . GST = 18% × 20 = ₹ 3.60 . Total = 20000 + 20 + 3.60 =... 1
- Q.3 (v) Write three characteristics of phylum-Mollusca. Answer: The body is soft and unsegmented, usually covered by a hard calcareous shell (absent in some, e.g. slug, octopus). The body is divid... 1
- The common difference of the A.P. 2, 6, 10, 14, ... is Answer: D. 4 d = t₂ - t₁ = 6 - 2 = 4 . 1
- Which of the following sequences is an A.P.? Answer: C. 3, 7, 11, 15, ... In 3, 7, 11, 15 the difference between consecutive terms is always 4. The other sequences do not have a constan... 1
- For an A.P., \(a = 2\) and \(d = 3\). Then \(t_5 = \) Answer: A. 14 t_n = a + (n-1)d , so t₅ = 2 + 4 × 3 = 14 . 1
- If the \(n\)th term of an A.P. is \(t_n = 3n + 2\), its common difference is Answer: C. 3 t_(n+1) - t_n = 3(n+1) + 2 - (3n + 2) = 3 . 1
- The sum of the first 20 natural numbers is Answer: D. 210 S_n = n(n+1)/2 = 20 × 21/2 = 210 . 1
- How many two-digit natural numbers are divisible by 3? Answer: C. 30 They form the A.P. 12, 15, ..., 99. 99 = 12 + (n-1)3 ⇒ n - 1 = 29 ⇒ n = 30 . 1
- Which term of the A.P. 10, 7, 4, ... is \(-20\)? Answer: C. 11th a = 10, d = -3 . 10 + (n-1)(-3) = -20 ⇒ n - 1 = 10 ⇒ n = 11 . 1
- The sum of the first \(n\) terms of an A.P. is \(S_n = n^2 + 2n\). Its 10th term is Answer: B. 21 t₁₀ = S₁₀ - S₉ = (100 + 20) - (81 + 18) = 120 - 99 = 21 . 1
- If \(2k + 1\), 13 and \(5k - 3\) are three consecutive terms of an A.P., then \(k = \) Answer: A. 4 For an A.P., 2 × 13 = (2k + 1) + (5k - 3) ⇒ 26 = 7k - 2 ⇒ k = 4 . 1
- Q.2 (B)(v) Complete the following conceptual picture :[Concept map: “Sewage after processing” in the centre with four empty boxes around it.] Answer: Uses of sewage after processing: (1) biogas (methane) as fuel, (2) sludge as manure/fertiliser, (3) treated water for irrigation and... 1
- Q.3 (i) Define heredity. Explain the mechanism of hereditary changes. Answer: Heredity is the transfer of characters (traits) from parents to offspring through genes. Mechanism: Characters are controlled by gen... 1
- Q.3 (ii) Write any four stages of mitosis and explain any two of them. Answer: The four stages of mitosis are prophase, metaphase, anaphase and telophase. Prophase: chromatin condenses into thick, visible chromo... 1
- Q.3 (iii) Explain with examples types of asexual reproduction in unicellular organism. Answer: Unicellular organisms reproduce asexually by binary fission, multiple fission and budding. Binary fission: the parent cell divides i... 1
- Q.3 (iv) Which fuel is used in thermal power plant ? Write any two problems associated with this type of power generation. Answer: Coal is the fuel used in thermal power plants. Problems: Burning coal releases carbon dioxide, which adds to global warming, and sul... 1
- Q.3 (vi) What are the constituents of acid rain ? What are its two effects on earth’s surface ? Answer: Acid rain contains sulphuric acid, nitric acid (and carbonic acid), formed when sulphur dioxide, nitrogen oxides and CO₂ dissolve in... 1