9th Class Chemistry Practical 2020 | TechyTricks24
Expirement No 1
Object: How to cut and bend a glass tube and how to draw a jet.Apparatus: A meter
Tues: A meter long glass tube (5mm dia.), a meter sto
glass marking pencil and a knife
ter stick, a small triangular file, a
Method 1: Cutting of a glass tube
edure: Place a glass tube horizontally on a table. Measures
meter stick. Mark the length with a glass marking pencil. Make a sharp wran
scratch with the angular edge of the file at the mark Hold the tube between the ting
the hands and press the thump upward. Keen the tube away from your face. The
breaks evenly at the scratched place.
on a table. Measure the desired length by the Jets
Definition:
uses or melts is called Melting point.Apparatus: A can
Land, a glass rod stirrer a
liquid (conc H2O2) or (Paraffin li
A capillary tube, a thermometer, a small beaker
s rod stirrer, a thread, an iron stand with clamp
SO) or (Paraffin liquid).
small beaker, a wire gauze, a tripod
with clamp and a bunsen burner, bath
caution: To avoid any accident/injury Paraffin liqui
Note/Precaution:
of conc: H2O2
i liquid is recommended instead
Chemicals: Naphthalene, urea, stearic acid, acetamide, paraffin liquid or water.
way that the
thermometer ont
Procedure: Seal one end of a capilla
About This Post:
This Is 9th class chemistry practical Expirement No :1 Object: How to cut and bend a glass tube and how to draw a jet.
Apparatus: A metertus: A meter long glass tube (5mm dia.), a meter sto
glass marking pencil and a knife
ter stick, a small triangular file, a
Method 1: Cutting of a glass tube
edure: Place a glass tube horizontally on a table. Measures
meter stick. Mark the length with a glass marking pencil. Make a sharp wran
scratch with the angular edge of the file at the mark Hold the tube between the ting
the hands and press the thump upward. Keen the tube away from your face. The
breaks evenly at the scratched place.
Def:uses or melts is called Melting point.
Apparatus: A can
Land, a glass rod stirrer a
liquid (conc H2O2) or (Paraffin li
A capillary tube, a thermometer, a small beaker
s rod stirrer, a thread, an iron stand with clamp
SO) or (Paraffin liquid).
- on a table. Measure the desired length by the Jets: By Vicky Shaikh
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