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