Water Properties.pdf

a) solution, b) solvent, c) oxygen, d) oil, e) condensation, f) rainwater, g) heavy, h) temperature
a) solvent, b) true, c) true, d) true, e) true
Column A: Nimbu pani - solution, Salt - soluble in water, Water - solvent, Mustard oil - insoluble in water, Evaporation - change of liquid to vapors
A. a) Changing of temperature, B. b) Floats, C. a) Condensation, D. b) 3
a) Solvent - substance that dissolves solute, b) Condensation - process of conversion of vapor to liquid, c) Evaporation - process of conversion of liquid to vapor
a) Oxygen, carbon dioxide, b) through gills, c) substance floats when density is less than water, sinks when density is more than water, d) density, e) when vapor condenses, f) because they mix with pollutants, g) solution
S.N, Name of Substance, Sink/ Float/ Soluble
a) fuel, b) LPG, c) wood, d) CNG, e) CNG, f) coal, g) fossil, h) non-renewable, i) biogas
Column A: LPG - Liquified Petroleum gas, CNG - Compressed natural gas, PNG - Piped natural gas, Petroleum - fossil fuels
a) true, b) true, c) true, d) false, e) true
A. c) CNG, B. a) Petrol, C. a) Cleaner fuels, D. b) can be replenished
a) solar, wind, b) because it gives energy, c) because they produce less pollution, d) because they produce less pollution, e) heating, cooking, transportation, f) coal, g) petroleum, h) from plants, i) coal, petroleum, gas, j) because renewable can be replenished, k) to save for future
S.N, Name of the fuel, Purpose of the fuel
S.N, Name of the fuel, Renewable/ Non-renewable
Make a poster for conservation of energy
Write a slogan to encourage the use of alternative source of energy