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    copper displace zinc from zinc sulphate solution true or false

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    Q.4 Mark ‘T’ If The Statement Is True And ‘F’

    Get detailed answer of q.4 mark ‘t’ if the statement is true and ‘f’ if it is false. (a) generally, non-metals react with acids. ( ) (b) sodium is

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    Q.4 Mark ‘T’ if the statement is true and ‘F’ if it is false.

    Demo

    (a) Generally, non-metals react with acids. ( )

    (b) Sodium is a very reactive metal. ( )

    (c) Copper displaces zinc from zinc sulphate solution. ( )

    (d) Coal can be drawn into wires. ( )

    Answer :

    a) Generally, non-metals react with acids. ( F )

    b) Sodium is a very reactive metal. ( T )

    c) Copper displaces zinc from zinc sulphate solution. ( F )

    d) Coal can be drawn into wires. ( F )

    EXPLANATION :

    a) Generally, non-metals react with acids. This statement is not true because when a substance reacts with acids it provides electrons to the H+ ions produced by the acids. Non-metals are acceptors of electrons and hence, they cannot donate electrons.

    b) Sodium is a very reactive metal. This statement is true because sodium is quite reactive with air and its reactivity is a function of the relative humidity or water-vapour content of the air. The corrosion of solid sodium by oxygen is accelerated by the presence of small amounts of impurities in the sodium.

    c) Copper displaces zinc from zinc sulphate solution. This statement is not true because copper is less reactive than zinc and hence cannot displace zinc from its solution.

    d) Coal can be drawn into wires. This statement is not true because coal is mostly composed of carbon which is ultimately a non-metal. As non-metals doesn't show ductility hence coal cannot be drawn into wires and if stretched, it breaks.

    NCERT solutions of related questions for Materials: Metals and Nonmetals

    Q.1 Which of the following can be beaten into thin sheets? (a) Zinc (b) Phosphorus (c) Sulphur (d) Oxygen

    Q.2 Which of the following statements is correct? (a) All metals are ductile. (b) All non-metals are ductile. (c) Generally, metals are ductile. (d) Some non-metals are ductile.

    Q.3 Fill in the blanks. (a) Phosphorus is a very _________non-metal. (b) Metals are conductors of heat and ____________ . (c) Iron is ____________reactive than copper. (d) Metals react with acids to produce ____________ gas.

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    Q.6 Give reasons for the following. (a) Aluminium foils are used to wrap food items. (b) Immersion rods for heating liquids are made up of metallic substances. (c) Copper cannot displace zinc from its salt solution. (d) Sodium and potassium are stored in kerosene

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    Copper displaces zinc from zinc sulphate solution.

    Copper displaces zinc from zinc sulphate solution.

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    Copper displaces zinc from zinc sulphate solution.

    Question

    Copper displaces zinc from zinc sulphate solution.

    A True B False Open in App Solution

    The correct option is B False

    In a displacement reaction, a more reactive element displaces a less reactive metal from its salt. Zinc is more reactive than copper. Hence, copper will not displace zinc from zinc sulphate. Thus, the given statement is false.

    Suggest Corrections 7

    SIMILAR QUESTIONS

    Q. Assertion :Zinc displaces copper from copper sulphate solution. Reason: The

    E ∘ of Z n is − 0.76

    volt and that of copper is

    + 0.34 v o l t .

    Q.

    Give reasons for the following :

    (a) Sodium and potassium are stored in kerosene.

    (b) Copper cannot displace zinc from its salt solution (zinc sulphate solution).

    Q.

    Which of the following pairs cannot undergo displacement reaction?

    (a) iron sulphate solution and magnesium

    (b) zinc sulphate solution and iron

    (c) zinc sulphate solution and calcium

    (d) silver nitrate solution and copper

    Q. State whether a displacement reaction will occur if the following are mixed. Give reasons. Give the reaction.

    (a) copper sulphate and zinc

    (b) copper sulphate and iron

    (c) zinc sulphate and copper

    (d) zinc sulphate and iron

    (e) iron sulphate and zinc

    (f) iron sulphate and copper

    Q. Copper displaces zinc from zinc sulphate solution.

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    स्रोत : byjus.com

    State whether following statements are true or false class 11 chemistry CBSE

    State whether following statements are true or false A Generally nonmetals react with acids B Sodium is a very reactive metal C Copper displaces zinc from zinc sulphate solution D Coal can be drawn into

    State whether following statements are true or false.

    (A) Generally, non-metals react with acids

    (B) Sodium is a very reactive metal

    (C) Copper displaces zinc from zinc sulphate solution

    (D) Coal can be drawn into wires.

    Answer Verified 207.9k+ views 1 likes

    Hint: Ductile materials are used to make thin wires. Those metals replace other metals from its salt solution, which is more reactive than the other metal. Sodium is present in the first group of alkali metals.Complete step by step answer:

    To know which of the following option is true or false, we will consider each statement one by one.

    Considering option (A), Generally, non-metals react with acids. Non-metals do not react with acids. This is due to the fact that a substance undergoing reaction with acids, donates electrons to the hydronium ions produced by the acids. But non-metals are acceptors of electrons and hence they do not donate electrons to the hydrogen ion of the acid. Metals react with acids. Therefore, this statement is false.

    Considering option (B), Sodium is a very reactive metal. As a part of the alkali metal group in the periodic table, sodium is highly reactive and is never found pure in nature. It tarnishes easily and has a low melting point and density. Sodium is so reactive because they lose their valence electron very easily. Therefore, this statement is true.

    Considering option (C), Copper displaces zinc from zinc sulphate solution. Copper is less reactive than zinc and so placed below zinc in the reactivity or electron affinity series of metals.A metal which is less reactive, cannot displace a more reactive metal from a solution of its salt.Hence, copper cannot displace zinc from its salt solution. Therefore, the statement is false.

    Considering option (D), Coal can be drawn into wires. Coal is neither malleable nor ductile. It is brittle. It would crumble if you tried to draw it into a wire. Hence, it is a false statement.

    So, the correct answer is “Option B”.Note: Ductility is when a solid material stretches under tensile strain. If ductile, a material may be stretched into a wire. Malleability, a similar property, is a material's ability to deform under pressure (compressive stress). If malleable, a material may be flattened by hammering or rolling.

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