Question 1 :
$KXO_3$(s) well mixed with water, temperature of solution falls. This reaction is:<br/>
Question 4 :
AB + CD $\rightarrow$ AD + BC<br/><br/>The reaction is an example of _________.<br/><br/><br/>
Question 5 :
In $HS^, I^, R-NH_2, NH_3$ order of proton excepting tendency will be:
Question 6 :
Which of the following symbol is used to show solid precipitate?
Question 7 :
Other signs of a chemical reaction might be an increase in temperature if heat is released or a change in _____.
Question 13 :
Which of the following is an example of the exothermic reaction ?
Question 14 :
The substance that initially involved in a chemical reaction is called a reactant.
Question 15 :
A chemical reaction in which heat is evolved is called a/an:<br/>
Question 16 :
In the reaction, $4Fe+3O_2\rightleftharpoons 4Fe^{3+}+6O^{2-}$ Which of the following statements is incorrect?
Question 18 :
What is the difference between displacement over double displacement reactions ?
Question 19 : <p>Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of :</p>
Question 20 :
The conversion of ${Cr}_{2}{O}_{7}^{2-}$ to ${Cr}^{3+}$ during a chemical reaction is an example of:
Question 21 :
The reaction of hydrochloric acid with zinc oxide to form zinc chloride and water is neutralization reaction. State whether the statement is true or false
Question 22 :
State true or false.<br/>In a chemical equation, the products are written on the left-hand side and the reactants on the right-hand side with an arrow in between.
Question 23 :
Reaction of iron nails with copper sulphate solution is an example of ____________.
Question 24 :
Which of the following reaction requires oxygen to be a reactant ?
Question 26 :
$FeCl_3 + 3NaOH \rightarrow 3NaCl + Fe(OH)_3$<br/><br/>The reaction is an example of________.
Question 27 :
A less reactive metal replaces a more reactive metal from its salt solution in water.<br>
Question 29 :
Which type of chemical decomposition reaction is the following reaction?<br>$Cu(OH)_2\xrightarrow {heat} CuO+H_2O$
Question 32 :
Identify the type of reaction which will occur based on the information provided about the reactants:<br>${CH}_{4}(g)+{O}_{2}(g)\rightarrow$
Question 34 :
Three cations $A, B, C$ are allowed to react with ammonium hydroxide solution. $A$ and $B$ produce a dirty green precipitate and a reddish brown precipitate respectively, both of which do not dissolve on further addition of ${NH}_{4}OH$. $C$ gives pale blue colour precipitate with less amount of ammonium hydroxide and on further addition of ${NH}_{4}OH$, precipitate becomes soluble and deep blue colour solution is formed:
Question 35 :
When chlorine reacts with sodium bromide the solution turns brown because ________.
Question 38 :
Name the type of the following chemical reaction.$2KClO_3 \rightarrow 2KCl +3O_2$
Question 40 :
State true or false.<br/><br/>In redox reactions, oxidation and reduction take place simultaneously.<br/>
Question 41 :
Assertion: In a reaction<br/><br/>$Z n ( s ) + CuSO_4 (aq) \rightarrow ZnSO_4 (aq) + Cu(s)$<br/><br/>Zn is a reductant but itself get oxidized.
Reason: In a redox reaction, oxidant is reduced by accepting electrons and reductant is oxidized by losing electrons.
Question 42 :
The decomposition of $KClO_3$ to $KCI$ and $O_2$ on heating is an example of:
Question 44 :
When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. The reaction is an example of:<br/>
Question 45 :
When $Fe$ replaces $CuSO_4$ in the following reaction, what will be the ionic compound that forms between Fe and $CuSO_4$?
Question 47 :
When oxygen gas is either absent or present in low quantity in the solid, in places like stagnant swamps, the soil is said to be in:
Question 48 :
How many molecules of $CO_2$ are formed when one molecule of $C_6H_{12}O_6$ is oxidised in our body?
Question 51 :
Two aqueous solutions are mixed and a precipitate is formed. What type of reaction is it? 
Question 52 :
The standard reduction potentials at 298 K for the following half reactions are given against each<br/>$Zn^{2+}(aq)+2e\rightleftharpoons Zn(s)\ -0.762$<br/>$Cr^{3+}(aq)+2e\rightleftharpoons Cr(s)\ -0.740$<br/>$2H^+(aq)+2e\rightleftharpoons H_2(g)\ 0.000$<br/>$Fe^{3+}(aq)+2e\rightleftharpoons Fe^{2+}(aq)\ 0.770$<br/>Which is the strongest reducing agent?
Question 54 :
In a change hydrogen peroxide gives rise' to hydrogen oxide and oxygen. This is an example of:
Question 56 :
Give an example of each of the following chemical changes: An endothermic reaction <br/>
Question 58 :
What happens when a piece of zinc metal is added to copper sulphate solution ?<br/>
