Chemistry 10 - Students Free Notes

Chemistry 10

Compare how big data is applicable to various fields of life. Illustrate your answer with suitable examples.

Big data has widespread applications across various fields, transforming industries and enabling advancements in numerous areas. Let’s explore how big data impacts different sectors: Healthcare:Big data is revolutionizing healthcare by enabling the analysis of vast amounts of medical data, from patient records to diagnostic images and genetic data. For example, predictive analytics based on big … Read more

Explain the procedure of plant tissue culture and illustrate your answer with a suitable diagram.

Plant tissue culture is a technique used to grow new plants from a small piece of plant tissue under sterile conditions in a nutrient medium. The process involves: 1. Selection of an explant (a small tissue from a plant). 2. Sterilization to prevent microbial contamination. 3. Placement in a nutrient-rich culture medium containing growth hormones. … Read more

Model Paper 10

Total Marks: 65 Time Allowed: 2 Hours 20 Minutes Section A: MCQs (12 Marks, 20 Minutes) (Each MCQ carries 1 mark.) 1. Which of the following is an alkali metal? a) Magnesium b) Calcium c) Sodium d) Iron 2. What is the empirical formula of glucose (C₆H₁₂O₆)? a) CHO b) C₆H₁₂O₆ c) CH₂O d) C₂H₄O₂ … Read more

Model Paper 9

Total Marks: 65 Time Allowed: 2 Hours 20 Minutes — Section A: MCQs (12 Marks, 20 Minutes) (Each MCQ carries 1 mark.) 1. Which element is present in all organic compounds? a) Hydrogen b) Oxygen c) Carbon d) Nitrogen 2. What is the common name for calcium sulfate dihydrate? a) Gypsum b) Limestone c) Quicklime … Read more

Model Paper 8

Total Marks: 65 Time Allowed: 2 Hours 20 Minutes Section A: MCQs (12 Marks, 20 Minutes) (Each MCQ carries 1 mark.) 1. What is the molecular formula of ethanoic acid? a) CH₄ b) C₂H₄O₂ c) C₂H₆O d) C₆H₆ 2. Which gas is produced when calcium carbonate reacts with hydrochloric acid? a) Oxygen b) Carbon dioxide … Read more

Model Paper 6

Total Marks: 65 Time Allowed: 2 Hours 20 Minutes Section A: MCQs (12 Marks, 20 Minutes) (Each MCQ carries 1 mark.) ⦁ Which process is used to concentrate sulfur ores? a) Froth flotation b) Roasting c) Electrolysis d) Hydration ⦁ What is the molecular formula of benzene? a) C₂H₆ b) C₃H₈ c) C₆H₆ d) C₆H₁₂ … Read more

Model Paper 4

Total Marks: 65 Time Allowed: 2 Hours 20 Minutes — Section A: MCQs (12 Marks, 20 Minutes) 1. Which of the following is an example of an exothermic reaction? a) Melting of ice b) Photosynthesis c) Combustion of methane d) Electrolysis of water 2. The functional group in alcohols is: a) –COOH b) –CHO c) … Read more

Model Paper 3

Total Marks: 65 Time Allowed: 2 Hours 20 Minutes   Section A: MCQs (12 Marks, 20 Minutes) 1. Which of the following is a strong electrolyte? a) Glucose b) NaCl c) Urea d) Alcohol 2. What is the functional group of aldehydes? a) –COOH b) –CHO c) –OH d) –COO–   3. The process of … Read more