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