This book is the Arihant Laboratory Manual Science for CBSE Class X, published by Arihant Publications as per the CBSE syllabus. It is an English medium (अंग्रेज़ी माध्यम) book, written entirely in English (Roman script), with no Hindi content. The manual covers the complete Class 10 Science practical syllabus across physics, chemistry and biology — determination of focal length of concave mirror and convex lens, tracing the path of a ray of light through a glass slab and prism, verification of Ohm's law, resistors in series and parallel, pH of samples and properties of acids and bases, types of chemical reactions, reactivity series of metals, saponification and properties of ethanoic acid, study of stomata, binary fission in Amoeba and budding in yeast, and the experiment on the percentage of water absorbed by raisins. Each experiment is set out with aim, apparatus and materials required, theory, procedure, observation tables, calculations, result and precautions, with clear labelled diagrams for the practical file, plus viva-voce questions with answers for the practical examination. Key Features: English medium book — complete content written in English (Roman script), no Hindi content Published by Arihant Publications As per the CBSE syllabus for Class 10 (Class X) Science practicals Covers the complete practical syllabus — physics, chemistry and biology experiments Experiments set out with aim, apparatus, theory, procedure, observation and result Calculations and precautions given for every experiment Clear labelled diagrams, ray diagrams and circuit diagrams for the practical file Physics — focal length of mirror and lens, ray through glass slab and prism, Ohm's law, series and parallel resistors Chemistry — pH of samples, acids and bases, types of chemical reactions, reactivity series, ethanoic acid and saponification Biology — stomata, binary fission in Amoeba, budding in yeast, water absorbed by raisins Viva-voce questions with answers for practical examination preparation Ready-to-use format for maintaining the practical file Suitable for CBSE Class 10 practical examination and internal assessment 'Arihant Laboratory Manual Science' (CBSE कक्षा X) Arihant Publications द्वारा प्रकाशित है और यह CBSE पाठ्यक्रम के अनुसार तैयार की गई है। इसमें कक्षा 10 के विज्ञान (Science) विषय का सम्पूर्ण प्रायोगिक पाठ्यक्रम — अवतल दर्पण एवं उत्तल लेंस की फोकस दूरी, काँच की स्लैब एवं प्रिज्म से प्रकाश किरण का पथ, ओम का नियम, श्रेणी एवं समांतर क्रम में प्रतिरोध, pH मापन, अम्ल-क्षारक के गुण, रासायनिक अभिक्रियाओं के प्रकार, धातुओं की सक्रियता श्रेणी, एथेनोइक अम्ल एवं साबुनीकरण, रंध्र का अध्ययन, अमीबा में द्विविभाजन, यीस्ट में मुकुलन तथा किशमिश द्वारा जल अवशोषण — कवर किया गया है, साथ ही प्रत्येक प्रयोग हेतु उद्देश्य, विधि, प्रेक्षण सारणी, परिणाम, सावधानियाँ, चित्र एवं वाइवा प्रश्न भी दिए गए हैं। ध्यान दें: यह पुस्तक पूर्णतः अंग्रेज़ी भाषा एवं रोमन लिपि में है, हिन्दी में नहीं।