EXERCISE
1. Mention one use of each of the following
equipments :
(a) Spirit lamp (b) Test tube
(c) Conical flask
(d) Evaporating dish
(e) Wire gauze
(f) Beaker
(g) Mortar and pestle (h) Measuring cylinder
(i) Glass tube
(j) Gas jar
(k) Reagent bottle.
Answers
Answer:
a) Spirit lamp : It is an outdated method used for heating purposes.
b) Test tube : Used for heating chemicals and studying reactions in solutions.
c) Conical flask : Used for mixing different solutions.
d) Evaporating dish : Used for the evaporation of solutions and supernatant liquids.
e) Wire gauze : It prevents the glass apparatus from cracking on heating from below.
f) Beaker : It is used for holding, pouring and mixing solutions.
g) Mortar and pestle : Used to prepare ingredients or substances by crushing and grinding them into a fine paste or powder in the kitchen, laboratory, and pharmacy.
h) Measuring cylinder : Measures difinite volumes of a liquid by filling the liquid to the marked level and then pouring it out.
i) Glass tube : Used for solar thermal system and pharmaceutical packaging.
j) Gas jar : Used for collecting gases by different methods.
k) Reagent bottle : They are intended to contain chemicals in liquid or powder form for laboratories.
Explanation:
Hope this helps.