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