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