OBJECTIVE: To verify Archimedes Principle, which states that an object immersed in a fluid, partially or completely, experiences an upward buoyant force equal to the weight of the fluid displaced by the object. APPARATUS REQUIRED Eureka Can, Spring Balance, Digital Top Pan Balance, Beaker, Small stone, Thread, Water THEORY Archimedes Principle states that an object […]
TO VERIFY ARCHIMEDES’ PRINCIPLE Read More »
OBJECTIVES MATERIALS REQUIRED Fresh onion bulb, Safranin, Dropper, Glycerol, No. 0 painting round tip brush, forceps, needle, blade, scissor, wash bottle, petri dish, watch glass, cover glass, slide, compound microscope . THEORY Onion cells are commonly used for microscopic studies because they have large and easily observable cells. The onion cell has a rectangular shape
TO PREPARE TEMPORARY SLIDE OF ONION CELL FROM EPIDERMAL PEEL OF ONION BULB Read More »
OBJECTIVES MATERIALS REQUIRED Fresh leaf of Senna tora (or Bidens pilosa /Tradescantia /Celosia cristata/ Dioscorea bulbifera) or other soft dicot leaf, Safranin, Dropper, Glycerol, No. 0 painting round tip brush, forceps, needle, blade, scissor, wash bottle, petri dish, watch glass, cover glass, slide, compound microscope . THEORY Stomata are specialized structures found on the ventral
TO PREPARE TEMPORARY SLIDE OF STOMATA FROM VENTRAL PEEL OF DICOT LEAF Read More »
What are the relation Between Practical Work, Project Work and Report Writing in Scientific Learning? Characteristic Practical Work Project Work Report Writing Goals To learn the skills and procedures of science To develop inquiry and problem-solving skills To communicate the results of an investigation Structure More structured and teacher-directed More open-ended and student-directed More structured
Science Practical Work, Project Work and Report Writing Guidelines for Student Read More »
OBJECTIVE: The objective of this practical record is to determine the least count of the following measuring equipment: ruler, measuring cylinder, thermometer, aneroid barometer, and pipette. APPARATUS REQUIRED Ruler, Measuring cylinder, Thermometer, Aneroid barometer, Pipette THEORY The comparisons of unknown physical quantity with known standard quantity of same kind is called measurement. The known physical
MATERIAL REQUIRED Iodine Solution (Potassium Iodide), Ethanol, Beaker, Green Leaf of Sunny Place, Bunsen burner, Tripod stand with wire gauze. THEORY The process of preparation of food(Glucose/Starch) by green plant by using water and carbon dioxide in presence of sunlight absorbed by chlorophyll is called photosynthesis. The leaf is the chief parts of plant which
TO DEMONSTRATE THAT GREEN LEAF CONTAIN STARCH Read More »
MATERIAL REQUIRED Convex Lens, Optical Bench THEORY A lens is a piece of transparent material which concentrates or disperses light rays when passes through them by refraction. According to the shape and purpose of the lens, they are classified into two types convex lens and concave lens. A lens that is thicker at its center
TO DETERMINE FOCAL LENGTH OF CONVEX LENS Read More »
MATERIALS REQUIRED Round bottom flask, delivery tube with cork, water trough, beehive shelf, gas jar, tripod stand with wire gauze, stand with clamp, Bunsen’s burner, sodium nitrite, ammonium chloride. THEORY Nitrogen is one of the inactive gases. However, it has a significant role to play in the life of plants and animals. It is also
TO PREPARE NITROGEN GAS IN LABORATORY Read More »
MATERIAL REQUIRED Beaker, short stem funnel, test tube, spirogyra or hydrilla plant, sodium bicarbonate. THEORY The process in which green plant prepare their food in their body by using carbon dioxide and water in presence of sunlight absorbed by chlorophyll called photosynthesis. Water + Carbondioxide ➡ Glucose + Oxygen 6H2O + 6CO2 ➡ C6H12O6 +6O2↑
TO DEMONSTRATE THAT OXYGEN IS EVOLVED DURING PHOTOSYNTHESIS. Read More »
MATERIAL REQUIREDS A glass tumbler, water, postcard THEORY The force per unit area is called pressure. The pressure exerted by atmosphere is called atmospheric pressure. The atmosphere exerts pressure about 1.013 ✖ 10 5 N/m-2 or 760 mm of Hg at Sea level. Atmospheric pressure can hold about 10 m high water column. PROCEDURE OBSERVATION
TO PROVE THAT OCCURANCE OF ATMOSPHERIC PRESSURE BY TUMBLER AND POSTCARD METHOD Read More »
