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