Doubtly : Engineering - Notes, Viva, Questions, and Answers

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Name the isotopes of hydrogen. Write their atomic composition schematically and explain which of these is radioactive ?

answered Dec 16, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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Name the following A. Alkali metal with smallest atom.

answered Dec 16, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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5. Choose the correct option. A. The unstable isotope of hydrogen is ..... a. H-1 b. H-2 c. H-3 d. H-4

answered Dec 16, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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A 50% solution of sulphuric acid is subjected to electrolyte oxidation and the product is hydrolysed

answered Dec 16, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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Find out the s block elements compounds importance/uses.

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A water sample, which did not give lather with soap, was found to contain Ca(HCO3 )2 and Mg(HCO3 )2 .

asked Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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Describe the industrial production of dihydrogen from steam. Also write the chemical reaction involved.

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Describe the diagonal relationship between Li and Mg with the help of two illustrative properties.

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Beryllium oxide is treated separately with aqueous HCl and aqueous NaOH solutions.

asked Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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Magnesium is heated in air.

asked Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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CO2 is passed into concentrated solution of NaCl, which is saturated with NH3 .

answered Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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Lithium floats an water while sodium floats and catches fire when put in water.

answered Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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BeCl2 is covalent while MgCl2 is ionic.

answered Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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Sodium dissolves in liquid ammonia to form a solution which shows electrical conductivity

answered Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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Alkaline earth metals have low values of electronegativity; which decrease down the group

answered Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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Standard reduction potential of alkali metals have high negative values.

answered Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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Hydrogen shows similarity with alkali metals as well as halogens.

answered Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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Collect the information of preparation of dihydrogen and make a chart

asked Nov 22, 2021 in Chapter 8: Elements of Group 1 and 2 by Doubtly (98.9k points)

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