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