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