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Evergreen Three in One Science Lab Manual for Class 10 by Stalin Malhotra, Jatinder Singh, and Pradeep Singh, published by Evergreen Publications (India) Ltd., is the ultimate practical guide for CBSE students. This single volume covers all essential physics, chemistry, and biology experiments – from verifying Ohm’s Law and calculating resistances in series & parallel to determining the focal length of a concave mirror and convex lens, studying refraction of light through a glass slab and prism, performing temporary mount preparation, analysing pH value and chemical reactions, testing the cleaning capacity of soap in hard and soft water, and observing binary fission, budding, respiration, and embryology. Includes a dedicated Practical-Based Questions chapter for exam practice. Ideal for scoring top marks in Class 10 science practicals.
To determine the pH of various solutions using pH paper or universal indicator and classify them as acidic, basic, or neutral.
By focusing a distant object (e.g., tree or window) on a screen and measuring the distance between mirror and sharp image.
Phenolphthalein remains colorless in acid but turns pink when base is added, indicating neutralization endpoint.
At constant temperature, current through a conductor is directly proportional to potential difference across it.
Add individual resistances: Rs = R1 + R2 + R3. Total resistance increases and exceeds the largest resistor.
Glass slab causes parallel lateral shift without deviation; prism causes angular deviation and dispersion of white light.
Light splits into seven colors (VIBGYOR) due to different bending angles for different wavelengths of light.
Form a sharp image of a distant object on a screen; distance between lens and screen equals approximate focal length.
It tests CO2 release – germinating seeds produce CO2 that turns the pink permanganate solution colorless.
Small bud (outgrowth) forms on parent cell, enlarges, and eventually separates to form a new daughter cell.
To determine the pH of various solutions using pH paper or universal indicator and classify them as acidic, basic, or neutral.
By focusing a distant object (e.g., tree or window) on a screen and measuring the distance between mirror and sharp image.
Phenolphthalein remains colorless in acid but turns pink when base is added, indicating neutralization endpoint.
At constant temperature, current through a conductor is directly proportional to potential difference across it.
Add individual resistances: Rs = R1 + R2 + R3. Total resistance increases and exceeds the largest resistor.
Glass slab causes parallel lateral shift without deviation; prism causes angular deviation and dispersion of white light.
Light splits into seven colors (VIBGYOR) due to different bending angles for different wavelengths of light.
Form a sharp image of a distant object on a screen; distance between lens and screen equals approximate focal length.
It tests CO2 release – germinating seeds produce CO2 that turns the pink permanganate solution colorless.
Small bud (outgrowth) forms on parent cell, enlarges, and eventually separates to form a new daughter cell.
