Can volume of given mass of gas may be changed, if T is constant so that promoure may 26. What are the main 27. What type of molecular motion exist in gaseous state? 28. Does gas laws are valid at 273°C? 29. What is the relation between kinetic energy of gas and its temperature? 30. What effect is noticed if a gas is heated at constant pressure? 31. What effect is noticed if a gas is subjected to high pressure at constant temperature 32. How are bar and atm related? 33. 34. What is the volume of 1 mole gas at 1 bar and 25°C (or SATP)? 35. What is the volume of 1 mole gas at STP? 36. What is the volume of 1 mole gas at 1 bar and 0°C? 37. What is average kinetic energy of gas molecules? 8. Which one is heavier out of N20 and 0,? . Most of the volume of container having a gas is empty space. Is it true or false? Give one example of each gas which is monoatomic, diatomic, triatomic and polyatomis? What is Boyle temperature? In which unit density of gases is expressed?
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10. A sum of 15,000 was borrowed at a rate of 20% per annum for 3 years, find the simple interest and compound interest after three years, when the interest is compounded annually.
11. Write an expression to find the amount if the principal P is invested for two years and the interest is compounded monthly, at a rate of r% per annum.
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The best place to start making a difference is right in your own home. Learn how you can reduce, reuse, and recycle materials to decrease household waste. The tips below will help you get started.
Lawn and Garden
Learn to compost at home. Use food scraps, yard trimmings, and other organic wastes to create a compost pile. Adding the compost you make to soil increases water retention, decreases erosion, and keeps organic materials out of landfills.
Raise the cutting height of your lawnmower during hot summer months to keep grass roots shaded and cooler, reducing weed growth, browning, and the need for watering.
If you need large lawn and garden equipment such as tillers and chainsaws, you can reduce waste (and save money) by setting up a sharing program with your neighbors.
When you mow, “gra sscycle” by leaving grass clippings on your lawn instead of bagging then. The clippings will return nutrients to the soil instead of taking up space in landfills.
Donate healthy plants that you want to replace to community gardens, parks and schools.
If you have a wood burning fireplace, save your ashes instead of throwing them away. Once cooled, wood ashes can be mixed into your compost heap and provide nutrients to your garden.
Home Improvement
Use insulation made from recycled paper, glass, and other recovered materials.
Clean and properly store tools, toys and outdoor furniture to protect them from damage and keep them out of landfills.
Turn off or unplug lights during the day. Doing so will save energy and help your lights last longer.
Storms can cause power outages. Prevent waste by keeping rechargeable batteries for your flashlights. If you do use disposable batteries, reduce hazardous waste by buying ones with low mercury content.
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