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ICSE-STUDY OF THE FIRST ELEMENT - HYDROGEN-TOPIC 1 Hydrogen and its Laboratory Preparation (1 MARK QUESTIONS)
- Hydrogen is.......... soluble in water.
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- Sodium ............... reacts smoothly with cold water.
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- Which of the following statements about hydrogen is incorrect?
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- Which metal gives hydrogen with all of the following: water, acids, al...
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- Why does hydrogen show dual nature ?
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- Why was hydrogen called 'inflammable air' ?
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- Which metal is preferred for preparation of hydrogen from acid ?
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- Why is hot concentrated sulphuric acid not used in the preparation of ...
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- Give equations to express the reaction between calcium and water.
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- Inert solvent is used for keeping sodium?
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- Why is sodium kept immersed in kerosene oil?
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- Provide the reason: Preferential use of Zinc in granulated form to p...
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- Give reasons : Conc. sulphuric acid is used as drying agent.
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