Question 1 : <div>Which of the following reaction requires oxygen to be a reactant ?</div>
Question 2 : <div>Which of the following is an example of the exothermic reaction ?</div>
Question 4 :
Which one of the following would the following result in a displacement reaction?
Question 6 :
Which of the following reactions is involved in black and white photography?<br/>
Question 10 :
The reaction between acid and base to form salt and water is an example of:
Question 12 :
Copper can't displace zinc from zinc sulphate solution because copper is:
Question 14 :
$KXO_3$(s) well mixed with water, temperature of solution falls. This reaction is:<br/>
Question 15 :
$\displaystyle { H }_{ 2 }\left( g \right) +{ Cl }_{ 2 }\left( g \right) \rightarrow 2HCl\left( g \right) $<br/>The above reaction is classified as a ____________ reaction.<br/>
Question 16 :
Identify the product(s) which will be formed by using the information provided about the reactants:<br/>$Mg(s)+2HCl \rightarrow$
Question 17 : $Fe_2O_3 + 2Ca \rightarrow CaO + 2Fe$ <div>This reaction is an example of:</div>
Question 19 :
$\displaystyle 2Al\left( s \right) +6HCl\left( aq \right) \rightarrow 2{ Al }^{ 3+ }\left( aq \right) +6{ Cl }^{ - }\left( aq \right) +3{ H }_{ 2 }\left( g \right) $<br/> The reaction above is best described as a(an):<br/>
Question 21 :
In a change hydrogen peroxide gives rise' to hydrogen oxide and oxygen. This is an example of:
Question 24 :
Which of the following reactions is/are a double displacement reaction(s) ?<br/>(i) $AgNO_3 + NaBr\, \rightarrow\, NaNO_3\, +\, AgBr$<br/>(ii) $BaCl_2 + H_2SO_4\, \rightarrow\, BaSO_4\, +\, 2HCl$<br/>(iii) $AgNO_3\ +  NaCl\, \rightarrow AgCl +\ NaNO_3$<br/>(iv) $NaOH\, +\, HCl\,\rightarrow\, NaCl\, +\, H_2O$
Question 25 :
When $SO_{2}$ gas is passed into aqueous $Na_{2}CO_{3}$, product formed is <span>$Na_{2}SO_{3}$, the type of the reaction is :</span>
Question 26 :
In a ____________reaction, two or more substances combine to a form a new single substance.
Question 29 :
Copper sulphate solution, which is blue in colour, will change to a colourless solution with<span> the addition of which metal</span>?
Question 30 :
The chemical change involving iron and sulphuric acid illustrates a .......... reaction.
Question 36 :
<span>A magnesium ribbon is burnt in oxygen to give a white compound $X$ accompanied by </span>the emission<span> of light. If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound $Y$. </span>Write the chemical formula of $X$ and $Y$:<br/>
Question 37 : The rate of a reaction doubles when its temperature changes from $300\ K$ to $310\ K$. Activation energy of such a reaction will be: <div><br/><div>$[R = 8.314\ JK^{-1} mol^{-1}$ and $\log 2 = 0.301]$</div></div>
Question 39 :
$C{ H }_{ 3 }C{ O }_{ 2 }Na+HCl{ O }_{ 4 }\rightarrow C{ H }_{ 3 }C{ O }_{ 2 }H+NaCl{ O }_{ 4 }$<br/>The above reaction can be classified as a<span> :</span>
Question 40 :
Which of the following reactions are possible? <br>i) $Mg+CuSO_4 \rightarrow MgSO_4+Cu$<br>ii) $Ca+MgSO_4 \rightarrow CaSO_4+Mg$<br>iii) $Cu+ZnSO_4\rightarrow CuSO_4+Zn$<br>iv) $Fe+MgSO_4 \rightarrow FeSO_4+Mg$
Question 42 :
Observe the following reaction. <br/>$ NH_{3(g)} + HCl_{(g)} \rightarrow NH_4Cl_{(s) }$<br/>which of the following is a type of above reaction?
Question 44 : Identify the type reaction from the following.<div>$H_2CO_3 (aq) \rightarrow H_2O(l) + CO_2(g)$</div>
Question 45 :
<span><span>When sodium hydroxide solution is added to copper sulfate solution, a blue precipitate of copper hydroxide is formed along with sodium sulfate solution. What kind of chemical reaction takes place between them?</span></span><br/>
Question 46 :
Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?<br>(i) Displacement reaction<br>(ii) Precipitation reaction<br>(iii) Combination reaction<br>(iv) Double displacement reaction<br>
Question 49 : Observe the reaction:<div><br/>$CaCO_{3(s)} + 2NaOH_{(aq)} \rightarrow Na_{2}CO_{3(aq)} + Ca(OH)_{2(aq)}$<div><br/>Which of the following is a type of above reaction?</div></div>
Question 50 : <div>$R-CH = CH_2+CO+CH_3-NH_2 \xrightarrow {H^+, 300^oC, 500\ atm}$</div><div><br/></div>The product formed in the above reaction is :
