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