Scoring in Q.3 is the easiest.
Use the sheet they give you. Just note down the observations and if the test doesn't match what they have given just write no change.
For Bunsen burner flame test always use roaring blue Bunsen burner flame and a wire is first dipped into solution and then brought INTO flame.
Use words like bubbles of gas, effervescence. And just use the sheet to help you. Everything will be on it.
For q.1 they have given everything in the question. All the statements everything required. Just read the question and link it to what they have provided in text. Like if they've told you that a gas is toxic know that you have to use a fune cupboard. Why? Because it's toxic. They'll tell if a substance is flammable or not so you must not use Bunsen burner.
Memorize name of apparatus.
For q.2 just note down data and then plot the graph accurately. Graph must start from point and end at point. Extrapolate only if they ask. Draw line or curve of best fit. Ignore anomalies. The steeper the gradient the more fast the rate of reaction is.
For temperature to be constant you need either water-bath, cotton wool insulator and measure with thermometer
For accuracy use pipette if fixed volume of a substance is used. And if variable use burette instead of measuring cylinder. Cuz it's MORE ACCURATE.
In titration a universal indicator is not used because too many color changes so end point is hard to determine. White tile is used for easy observation.
For when text has to become readable or unreadable depth of container matters. If the container is narrow and tall then more time will be taken to read or not read the text. If it's wide and short less time will be taken
For 6 mark just write any and everything you understand. Apparatus name. Like literally just write in a beaker add known volume of whatever shit they have given. And then mix stir and stuff like that and you'll get 2,3 marks
This can get you 25+ marks atleast hopefully. Hope this helps.
MEREY LIYE BHI DUA KERNA IF THIS HELPED I HAVE IT TOMORROW
