Question
Given below are a few elements
Given below are a few elements. Li, Li, K, Ca, F Identify the element which: (a) has the least atomic radius. (b)…
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Name the following
Name the following: (a) The most electronegative element of Period 2. (b) The largest atom of Period 3.
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5.6 litres of gas Z weighs 32 g at STP
5.6 litres of gas Z weighs 32 g at STP. What is the molecular weight and vapour density of Z?
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Study the reaction scheme shown below and identify the reactants A, B and C
Study the reaction scheme shown below and identify the reactants A, B and C.
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Give one relevant observation for the following
Give one relevant observation for the following: (a) Sodium hydroxide is added dropwise to Calcium nitrate solution. (b) Dilute Hydrochloric acid is…
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Bauxite is the principal ore used in the commercial extraction of aluminium
Bauxite is the principal ore used in the commercial extraction of aluminium. The Bayer’s process is used to refine bauxite into pure…
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Carbon reacts with an acid to form carbon dioxide, water and nitrogen dioxide
Carbon reacts with an acid to form carbon dioxide, water and nitrogen dioxide. (a) Name the acid used in the reaction. (b)…
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32.5 g of zinc reacts with concentrated nitric acid as given in the equation
Zn + 4HNO3 ⟶ Zn(NO3)2 + 2H2O + 2NO2 32.5 g of zinc reacts with concentrated nitric acid as given in the…
Question
Anil is a laboratory assistant in a college. He prepared nitric acid but stored it in a transparent container exposed to sunlight
Anil is a laboratory assistant in a college. He prepared nitric acid but stored it in a transparent container exposed to sunlight.…
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State whether the following statements are True or False
State whether the following statements are True or False: (a) Organic compounds having different molecular formula, but same structural formula are called…