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