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