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