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