VIP HOUSE TOWARD WASSCE

4a) - egg, - larva, - pupa - adult. 4b)Air is regarded as mixture because of the following reasons: _(PICK ANYONE OF YOUR CHOICE)_ - Air can be separered into its consituents like oxygen m, nitogen , etc , by the the physical process of fractional distillation (of liquid air). - Air shows the properties combustion , carbon dioxide turns lime water milky and air also turus lime water milky, though very slowly. - Heat and light , etc , are neither given out nor absorbed when air is prepared by mixing the required proportions of oxygen , nitrogen , carbon dioxide , argon ,water vapour., etc. - Air has a variable compostion because air at different places contains different amounts of the various gases, it does not have a definite formula. - Liquid air does not have a fixed boiling point 4c) magnetic pole is a region at each end of a magnet where the external magnetic field is strongest. A bar magnet suspended in Earth's magnetic field orients itself in a north–south direction. 4d) - less seed expenses, - better controlling of stubble, - less work on the soil, - more easily controlling weeds between rows.

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SOLUTIONS ✅

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1.J) A buffer solution is one that does not change in PH irrespective of further Acid or Base added ii) NH3/NH4CL

Q5 di. The central atom in ammonia (NH3), which is nitrogen, is the one that undergoes hybridization to give sp3 hybridised molecules. BCl3 is SP2 hybridisation Hybridization of H20 is sp3 hybridization . ii. H2O is tratahedral shape BCl3 is trigonal planer NH3 ....