A) 20j B) 10j C) 40j D) 30j
A) Mercury B) Saturn C) Jupiter D) Mars
A) stars and galaxies B) all of the above C) planets and moon D) energy and power
A) bush burning B) rainfall C) soil erosion D) farming
A) conducting, convection and radiation B) transportation, transpiration and evaporation C) All of the above D) evaporation, condensation and precipitation
A) electrical magnet radio B) electronic management radiation C) electromagnetic radiation D) electromagnetic radio
A) avoid overgrazing B) planting of cover crops C) deforestation D) mulching
A) 77% B) 78% C) 76% D) 79%
A) water cycle B) carbon cycle C) nitrogen cycle D) oxygen cycle
A) collection B) conversation C) harvesting D) collation
A) fuel B) liquid C) water D) air
A) stable and unstable hardness B) primary and secondary hardness C) permanent and temporary hardness D) tertiary and primary hardness
A) impure substance B) none of the above C) pure substance D) two pure substances
A) all of the above B) homogeneity C) chemical test D) melting and boiling points
A) potential of hydrogen B) potential of hydrogen peroxide C) potential of hydrogen oxide D) potential of helium
A) fluoridation B) filtration C) ammoniation D) coagulation
A) ammoniation B) lime treatment C) transpiration D) chlorination
A) loss soil fertility B) destroy soil structure C) lead to collapse of buildin D) maintains soil texture
A) 30j B) 20j C) 10j D) 40j
A) seconds B) meter C) joules D) newton |