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s Block Elements — JEE Main & Advanced NSEC PYQs

5 previous year questions from s Block Elements with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

5 questionsNSECSolutions on every page

An inorganic compound ' X ' of an alkali metal on heating gives a reddish-brown gas ' Y ' and a binary solid ' Z '. This solid is less soluble in water and its solution is basic. '

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A sample of water from a river was analyzed for the presence of metal ions and the observations were recorded as given below Reagent added Observation dil. HCl No change aq. Na ₂ C

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Which of the following is correct? I. Sodium (Na) is present as metal in nature II. Na ₂ O ₂ is paramagnetic III. NaO ₂ is paramagnetic IV. Na reacts with N ₂ to form Na ₃ ~N

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The correct statement about the solubilities of Group 2 hydroxides is:

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A dilute solution of an alkali metal in liquid ammonia is I. blue in colour II. conducts electricity III. paramagnetic IV. an oxidising agent

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