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