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