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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.

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Magnesium is heated in air.

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

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

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

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BeCl2 is covalent while MgCl2 is ionic.

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

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

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Standard reduction potential of alkali metals have high negative values.

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Hydrogen shows similarity with alkali metals as well as halogens.

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Collect the information of preparation of dihydrogen and make a chart

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ias exam paper pdf download 2019

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Write short notes A. Useful and harmful bacteria.

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Why is binomial nomenclature important?

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What will be the shape of bacillus and coccus type of bacteria?

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What are the salient features of monera?

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Paramoecium : Ciliated Protist Plasmodium : a. Amoeboid protozoan b. Ciliophora c. Flagellate protozoan d. Sporozoan

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Select odd one out for Heterotrophic bacteria. a. Nitrogen fixing bacteria b. Lactobacilli c. Methanogens d. Cyanobacteria

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Causative agent of red tide is _____________. a. Dinoflagellate b. Euglenoid c. Chrysophyte d. Lichen

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