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