Test Details

Chemical Reactions and Equations

Jan 17, 9:10 AM

50 minutes

Jan 17, 5:00 PM

50.0 marks

MCQ

25 questions

Gaurav Kumar

Class Details

Science

10th Class

Science

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Question Text

Question 1 :
Copper can't displace zinc from zinc sulphate solution because copper is:

Question 2 :
Name the type of following chemical reaction.<div>$2H_2O_2 \rightarrow 2H_2O + O_2$</div>

Question 3 :
Which of the following statement is correct for a double displacement reaction?

Question 4 :
Identify the product(s) which will be formed by using the information provided about the reactants:<br/>$2K(s)+{2H}_{2}O(l) \rightarrow$

Question 5 :
$Fe_2O_3 + 2Ca \rightarrow CaO + 2Fe$ <div>This reaction is an example of:</div>

Question 7 :
$Al_2(SO_4)_3(aq)+3 Ca(OH)_2(aq)\rightarrow 2 Al(OH)_3(aq) + 3CaSO_4(s)$<br/>The given reaction is an example of:

Question 8 :
Which one of the following would the following result in a displacement reaction?

Question 10 :
The formation of calcium oxide and carbon dioxide by heating limestone is an example of:

Question 12 :
Which one of the following does not happen during a chemical reaction? 

Question 14 :
Balanced chemical equations imply which of the following?<br>$I$. Numbers of molecules are conserved in chemical change<br>$II$. Numbers of atoms are conserved in chemical change.<br>$III$. Mass is conserved in chemical change.

Question 16 :
In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate?<br>

Question 17 :
In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?<br/>

Question 18 :
Which of the following is not a characteristic of a chemical reaction?

Question 21 :
Identify the type reaction from the following.<div>$H_2CO_3 (aq) \rightarrow H_2O(l) + CO_2(g)$</div>

Question 22 :
Observe the following reaction. <br/>$ NH_{3(g)} + HCl_{(g)} \rightarrow NH_4Cl_{(s) }$<br/>which of the following is a type of above reaction?

Question 23 :
Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?<br>(i) Displacement reaction<br>(ii) Precipitation reaction<br>(iii) Combination reaction<br>(iv) Double displacement reaction<br>

Question 24 :
Heating of ferrous sulphate crystals results in change in the colour of the crystals. This reaction is an example of:

Question 25 :
Which methods are suitable for preparing both zinc sulfate and copper(II) sulfate?<br>(1)Reacting the metal oxide with warm dilute aqueous sulfuric acid<br>(2) Reacting the metal with dilute aqueous sulfuric acid<br>(3)Reacting the metal carbonate with dilute aqueous sulfuric acid

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