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