Assertion: In froth flotation process sodium ethyl xanthate is used as collector. Reason: Sulphide ores are water soluble.

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How many bonds are there in CO2 molecule?

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Silver jewellery becomes black on prolonged exposure to air, it is due to the formation of

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Calculate the molarity of KOH in a solution prepared by dissolving 5.6 gm in enough water to form 500 mL of solution.

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The height of a right circular cylinder is 10.5 m. 3 times the sum of the areas of its 2 circular faces is twice the area of the curved surface. Find the volume of the cylinder.

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State the characteristics of groups in the periodic table.

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Why the two outermost shell of transition elements are incomplete?

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1. What is the difference between moleule and Covalent bond if there's not a difference then Give similarities between them ? 2. How CO2 gas is an acidic ? Please give in detailed solution....

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Define delocalisation.

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In laboratory, silicon can be prepared

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The percentage compostion of sodium phosphate as determined by analysis is 42.1% sodium, 18.9% phosphorus and 39% oxygen. Find the empirical formula of the compound.

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You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?

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Describe how you could show that phosphorus acid, H3PO3 is a weaker acid than Hydrochloric acid.

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The electronic configuration of Phosphorus (atomic number 15) will be:

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Maximum number of elements in a particular period depends upon : a)how electrons are filled into various shells b)the formula of 2n

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