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chemical & physical properties of p block elements
Q)why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction? Ans) The Standard free energy of formation of Cu2S is greater than
why is filtration in soil and water a slow process and explain the colour change in the filtrate
Q. What is paired comparison test? In paired comparison test, the assessor is presented with two products and asked to indicate whether there is a preference between them.
lithium and beryllium markedly differ from other members of their respective groups.
Q.How can we determine Concentrations of Solutions? Ans. The concentration of a solution is the quantitative expression of the amount of solute dissolved in the solution.
what is allotropy
Q. Determine the gluten content in the sample of flour? After undertaking this activity, you will be able to: • assess the gluten content the given sample of flour, • c
the simplest forms of physical quantities
Uses of Citric Acid It finds make use in making lemonades, like an acidulant in food and soft drinks and makes the lemon sour, like a mordant in dyeing and calico printing. Fer
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