Displacement Reaction

Q.

What information do we get from chemical equations? Explain with the help of an example.

Q. Which of the following is a displacement reaction?

1. $\text{CaO(s)}+{\text{H}}_2\text{O(l)}\to {\text{Ca(OH)}}_2\text{(aq)}$
2. ${\text{MgCO}}_3\text{(s)}\to \text{MgO(s)}+{\text{CO}}_2\text{(g)}$
3. $2\text{Na}\text{(s)}+2{\text{H}}_2\text{O(l)}\to 2\text{NaOH(aq)}+{\text{H}}_2\text{(g)}$
4. ${\text{H}}_2\text{(g)}+{\text{Cl}}_2\text{(g)}\to 2\text{HCl}\text{(g)}$

Q.

When a lead strip is inserted into a copper chloride solution then products will be ______

1. Green solution with crimson red metal on lead strip

2. Only colourless solution

3. Colourless solution with shiny brown metal on lead strip

4. Blue solution with white precipitate

Q.

What is a displacement reaction? Give one example.

Q.

Give an example of a reaction in which a less reactive non-metal is displaced by a more reactive non-metal.

Q. Copper displaces zinc from zinc sulphate solution.

1. True
2. False

Q. Which of the following substance is best suitable to store buttermilk?

1. Aluminium container
2. Earthen pot
3. Magnesium container
4. Plastic container

Q.

List observations when the Iron is dipped in dilute Sulphuric acid.

Q. Write the word equation involved in the displacement reaction of copper sulphate and zinc.

Q.

Write the balanced chemical equation for the following reaction.

Lead nitrate + Magnesium $\to$ Magnesium nitrate + Lead

Q. A chemical reaction in which a more reactive element displaces a less reactive element from its compound is known as ___ reaction.

Q.

What will be the product when Zinc and Silver nitrate undergoes a single-replacement reaction?

Q.

Identify $"\mathrm{X}"$in the following reaction $\underset{\mathrm{Iron}\mathrm{chloride}}{{\mathrm{FeCl}}_3\left(\mathrm{s}\right)}+\underset{\mathrm{Sodium}\mathrm{hydroxide}}{3\mathrm{NaOH}\left(\mathrm{aq}\right)}\to \mathrm{X}+\underset{\mathrm{Sodium}\mathrm{chloride}}{3\mathrm{NaCl}\left(\mathrm{s}\right)}$

Q. Question 29
Iron is more reactive than copper. Can you write an activity to show this?

Q. Write the word equation involved in the displacement reaction of copper sulphate and zinc.

Q. If metal A is more reactive than metal B. Complete the following reaction:
Metal A + Salt of metal B $\to$ Salt of metal A + .

1. Metal B
2. Hydrogen
3. Salt of metal B

Q. Which of the following is the most appropriate order of the reactivity of metals towards hydrochloric acid?​

1. Magnesium > Iron > Sodium > Copper​
2. Potassium > Silver > Aluminium > Copper​
3. Sodium > Copper > Iron > Gold ​
4. Potassium > Aluminium > Iron > Silver ​

Q.

What would you observe when you put some zinc pieces into blue copper sulphate solution? [1 MARK]

Q.

Define displacement reaction with the help of an example.

Q. A metal X can displace metal Y from its salt solution. Another metal Z can displace metal Y but not metal X from their respective salt solutions. Determine the correct order of reactivity of the given metals.

1. Z > Y > X
2. X > Z > Y
3. Y > Z > X
4. Z > X > Y

Q. Which among the following metals will not liberate hydrogen gas on reaction with acid or base?

1. Zinc
2. Magnesium
3. Aluminium
4. Gold

Q.

Identify the type of reaction when dilute hydrochloric acid is added to iron filings.

1. Combination Reaction

2. Displacement Reaction

3. Double Displacement Reaction

4. Decomposition Reaction

Q. What do you observe when an iron nail is placed into a blue-coloured copper sulphate solution?

1. Both B and C
2. Copper gets deposited on the iron nail.
3. Blue-coloured copper sulphate solution turns green.
4. The iron nail gets corroded.

Q. What is the basic principle involved in the displacement reaction?

Q. Assertion :Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid, whereas copper does not. Reason: Zinc is above hydrogen in reactivity series.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Both Assertion and Reason are incorrect.

Q. Generally non-metals do not react with water but they react with oxygen or air. Which of the following non-metals is stored in water to prevent its contact with atmospheric oxygen?

सामान्यतः अ-धातुएँ जल के साथ अभिक्रिया नहीं करती हैं लेकिन ये ऑक्सीजन या वायु के साथ अभिक्रिया करती हैं। निम्नलिखित में से कौनसी अ-धातु को वायुमण्डलीय ऑक्सीजन के साथ सम्पर्क में आने से रोकने के लिए इसे जल में रखा जाता है?

1. Sulphur
   सल्फर
2. Iodine
   आयोडीन
3. Carbon
   कार्बन
4. Phosphorous
   फॉस्फोरस

Q. Iron nails were dipped in a solution kept in a test tube. After half an hour, it was observed that the colour of the solution has changed. The solution present in the test tube before the reaction was that of _________.

1. iron sulphate
2. zinc sulphate
3. copper sulphate
4. aluminium sulphate

Q. Rima was given two test tubes labelled A and B. When she dipped an iron nail in both the test tubes, she observed that the colour of the solution changed as shown in the image given below. Identify the solutions in test tubes A and B.

1. Solution in test tube A is ${\text{FeSO}}_4$ and that in test tube B is ${\text{CuSO}}_4$
2. Solution in test tube A is ${\text{ZnSO}}_4$ and that in test tube B is ${\text{CuSO}}_4$
3. Solution in test tube A is ${\text{CuSO}}_4$ and that in test tube B is ${\text{ZnSO}}_4$
4. Solution in test tube A is ${\text{CuSO}}_4$ and that in test tube B is ${\text{FeSO}}_4$

Q.

What happens when iron fillings are added to dilute hydrochloric acid?

1. NO reaction takes place

2. Hydrogen gas and Iron chloride are produced.

3. Iron salt and water are produced.

4. Chlorine gas and Iron hydroxide are produced.

Q. Non-metals always react with acids to release hydrogen gas.

1. True
2. False