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