A) 40j B) 20j C) 30j D) 10j
A) Mars B) Saturn C) Mercury D) Jupiter
A) all of the above B) stars and galaxies C) planets and moon D) energy and power
A) soil erosion B) bush burning C) farming D) rainfall
A) All of the above B) conducting, convection and radiation C) evaporation, condensation and precipitation D) transportation, transpiration and evaporation
A) electrical magnet radio B) electromagnetic radio C) electromagnetic radiation D) electronic management radiation
A) mulching B) avoid overgrazing C) deforestation D) planting of cover crops
A) 79% B) 76% C) 77% D) 78%
A) nitrogen cycle B) carbon cycle C) water cycle D) oxygen cycle
A) collation B) conversation C) collection D) harvesting
A) liquid B) water C) fuel D) air
A) primary and secondary hardness B) stable and unstable 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) all of the above B) melting and boiling points C) chemical test D) homogeneity
A) potential of hydrogen peroxide B) potential of hydrogen oxide C) potential of hydrogen D) potential of helium
A) ammoniation B) coagulation C) filtration D) fluoridation
A) lime treatment B) ammoniation C) transpiration D) chlorination
A) destroy soil structure B) lead to collapse of buildin C) loss soil fertility D) maintains soil texture
A) 10j B) 20j C) 40j D) 30j
A) newton B) meter C) seconds D) joules |