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Suspensions: Definition and Properties Definition A suspension is a heterogeneous mixture containing solid particles that are large enough for sedimentation. These particles are dispersed throughout a liquid but are not dissolved. Over time, the solid particles will settle out due to gravity. Explanation Unlike solutions, where the solute is dissolved and the particles are molecularly […]

Solutions: A Comprehensive Overview Definition A solution is a homogeneous mixture composed of two or more substances. Homogeneous means that the mixture is uniform throughout; you can’t see different components easily. It’s formed when one substance (the solute) dissolves uniformly into another substance (the solvent). Explanation Let’s break down the components: Solute: The substance that

Separation Techniques: A Comprehensive Guide Definition Separation techniques are physical methods used to separate a mixture into its individual components. These techniques exploit differences in the physical properties of the substances within the mixture, such as boiling point, solubility, particle size, and density. Explanation Separation techniques are crucial in chemistry and other scientific disciplines. The

Elements, Compounds, and Mixtures Definition This section explores the fundamental building blocks of matter: elements, compounds, and mixtures. It defines each term and differentiates them based on their composition and properties. We will also delve into the subtypes of mixtures, including homogeneous and heterogeneous mixtures, and further classify these into solutions, suspensions, and colloids. Explanation

Matter: States, Properties, and Changes Definition Matter exists in various states, primarily as solid, liquid, or gas. These states are defined by the arrangement and movement of the constituent particles (atoms or molecules). Explanation The state of matter is determined by the balance between the kinetic energy (energy of motion) of the particles and the

Matter: States, Properties, and Changes Definition Matter exists in various states, primarily as solid, liquid, or gas. These states are defined by the arrangement and movement of the constituent particles (atoms or molecules). Explanation The state of matter is determined by the balance between the kinetic energy (energy of motion) of the particles and the

Class 10 – Science Extra Questions – Ch. 11 – Electricity Q. 1 What is another term for the potential difference between two points A) voltage B) work C) electric power D) rating Q. 2 Which of the following formulas correctly expresses electrical power (P) in terms of voltage (V) and resistance (R) only? A)

Class 10 – Science Extra Questions – Ch. 12 – Magnetic Effects of Electric Current Q. 1 What types of materials does a magnet have an attraction to A) plastics B) any metal C) aluminium D) iron and steel Q. 2 What is the name of the apparatus that generates electricity A) generator B) galvanometer

Class 10 – Science Extra Questions – Ch. 10 – The Human Eye and the Colourful World Q. 1 What is the closest distance at which a young person with healthy eyesight can see an object clearly A) 25 m B) 2.5 cm C) 25 cm D) 2.5 m Q. 2 During an experiment, a

Class 10 – Science Extra Questions – Ch. 9 – Light Reflection and Refraction Q. 1 What type of lens has a shape that curves outward in its central area A) concave B) plano-convex C) convex D) concavo-convex Q. 2 When a light beam moves from air into water, how will its angle of bending