Nursery to 10th Class Questions & Answers

Here we are with another chapter of class 8 maths. In the chapter 2, "Power Play", we have 20 challenging questions for you. The will give you complete practice of the chapter. You can download the worksheet below. Chapter 2 Power Play PDF download : Power Play PDF Worksheet 20 Class 8 Maths Chapter 2 Power Play Worksheet Question 1. A paper has thickness 0.001 cm and doubles every fold. Which expression gives the thickness after n folds? a) 0.001 × n cm b) 0.001 × 2n cm c) 0.001 × 2ⁿ cm d) 0.001ⁿ × 2 cm Question 2. The thickness after 10 folds is 1.024 cm. What is the multiplication factor from fold 10 to fold 20? a) 20 b) 100 c) 512 d) 1024 Question 3. Using 0.001 cm initial thickness, the thickness after 46 folds is closest to: a) 7 km b) 700 km c) 7,00,000 km d) 70,00,000 km Question 4. In "Stones that Shine", the number of rooms is written as 3⁴. How many rooms are there? a) 27 b) 81 c) 243 d) 729 Question 5. In the same story, the...

Photosynthesis is the process by which green plants make their own food using sunlight. In this process, plants take carbon dioxide from the air and water from the soil, and convert them into glucose (food). Oxygen is released as a by-product. Basically, plants cook food without a gas stove or an electricity bill, and still give us oxygen. Show-offs. Photosynthesis Formula Photosynthesis Chemical Equation 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ Meaning of Each Part (So It Feels Easy) 6CO₂: Carbon dioxide (taken from air through stomata) 6H₂O: Water (absorbed by roots) C₆H₁₂O₆: Glucose (food made by the plant) 6O₂: Oxygen (released into air) Conditions Needed for Photosynthesis Sunlight: Provides energy for the reaction Chlorophyll: Green pigment that traps sunlight Carbon dioxide: From the air Water: From the soil Word Form of the Formula Carbon dioxide + Water → Glucose + Oxygen Important Notes (Small but Exam-Friendly) Photosynthesis mostly ha...