observation of starch granules of potato
Biology

Observation of Starch Granules in Biology Lab

The Observation of Starch Granules is a practical experiment for Class Eleven Biology 1st Part in Bangladesh Educational System (NCTB). Necessary Materials for observation of Starch Granules: A Big Round Potato Glass Petri Dish Compound Microscope Scalpel Glass Slide Experiment: First, the round potato should be divided into different parts with a scalpel. Then remove the liquid from the potato parts in a Petri dish and take a drop on a clean slide and observe it under the microscope. Observations: Round potatoes on the slide will show oval whitish granules…

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observation of ideal plant cells of onion
Biology

Observation of ideal plant cells from onion peel

Observation of ideal plant cells from onion peel is a biology practical experiment for Class Eleven (HSC-1st part). Necessary Materials for observation of ideal plant cells: i) Onion, ii) Scalpel, iii) Forceps, iv) Needle, v) Glass Slide, vi) Cover Slip, vii) Small Brush, viii) 5% Glycerine, ix) Water, and x) Microscope. The procedure of the Experiment: Cut the onion lengthwise with a scalpel into several pieces. Take a piece of onion and break it with finger pressure on the opposite side of the cut edge. This will cause the scales…

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Microscope and its uses in Bangladesh
Biology

Microscope and its Uses in Biology Lab

The word microscope comes from the Greece languages ‘Micro’ and ‘skopein’. The microscope is an instrument with the help of which small and micro-objects invisible or dimly visible with bare eyes are magnified and visualized. Here we will discuss the microscope and its uses in Biology Lab. The ability to make different parts of an object visible is called resolving power. The resolving power of the human eye is typically 0.1 mm. That is, we cannot see objects smaller than 0.1 mm with our bare eyes. There are different types…

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Commonly Used Sodas in Bangladesh
Chemicals

Commonly Used Sodas in Bangladesh

There are lots of sodas chemically used worldwide. But here we discuss some commonly used sodas in Bangladesh for research, analysis, and industries. Commonly Used Sodas in Bangladesh: Sodium Carbonate [Na₂CO₃] Washing Soda, or Soda Ash Sodium bicarbonate [NaHCO₃] Baking soda Sodium hydroxide [NaOH] Caustic Soda Sodium Oxide [Na₂O] is an Alkali Metal Oxide Now, we will try to know details about commonly used sodas in Bangladesh: Sodium Carbonate: Sodium carbonate is an inorganic chemical compound with the chemical formula Na₂CO₃ and its commercial name is Soda Ash. It has…

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10 Most Used Salts in Bangladesh for Analysis and Research
Chemicals

10 Most Used Salts in Bangladesh for Analysis and Research

Every research laboratory used lots of salts for chemical analysis and experiments. Here we discuss the 10 Most Used Salts in Bangladesh for Analysis and Research. The Most Used Salts in Bangladesh: Let us start to know the details of the salts: (A) Sodium Chloride (Halite Salt) Sodium Chloride is a very common salt in our daily life and research lab. The trivial Name of sodium chloride is Halite. Sodium Chloride is an ionic compound and its chemical formula is NaCl, representing a 1:1 ratio of sodium ions and chloride…

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