Question 2 :
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 3 :
When chlorine reacts with sodium bromide the solution turns brown because ________.
Question 4 :
Which type of chemical decomposition reaction is the following reaction?<br>$Cu(OH)_2\xrightarrow {heat} CuO+H_2O$
Question 9 :
Which of the following symbol is used to show solid precipitate?
Question 11 :
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 12 :
What is the difference between displacement over double displacement reactions ?
Question 13 :
An oxidizing agent is always takes part in the reduction process while a reducing agent is always take part in the _______ process.
Question 14 :
Which of the following is an example of the exothermic reaction ?
Question 15 :
The conversion of ${Cr}_{2}{O}_{7}^{2-}$ to ${Cr}^{3+}$ during a chemical reaction is an example of:
Question 16 :
The substance that initially involved in a chemical reaction is called a reactant.
Question 17 :
Aqueous solutions of magnesium chloride and silver nitrate are mixed to form solid silver chloride and aqueous magnesium nitrate.<br/><br/>The balanced molecular equation contains which one of the following terms?
Question 23 :
A less reactive metal replaces a more reactive metal from its salt solution in water.<br>
Question 25 :
Reaction of iron nails with copper sulphate solution is an example of ____________.
Question 26 :
AB + CD $\rightarrow$ AD + BC<br/><br/>The reaction is an example of _________.<br/><br/><br/>
Question 27 :
Other signs of a chemical reaction might be an increase in temperature if heat is released or a change in _____.
Question 29 :
State true or false.<br/><br/>In redox reactions, oxidation and reduction take place simultaneously.<br/>
Question 30 :
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 31 :
$FeCl_3 + 3NaOH \rightarrow 3NaCl + Fe(OH)_3$<br/><br/>The reaction is an example of________.
Question 32 :
Name the type of the following chemical reaction.$2KClO_3 \rightarrow 2KCl +3O_2$
Question 34 :
A chemical reaction in which heat is evolved is called a/an:<br/>
Question 37 :
Which of the following reaction requires oxygen to be a reactant ?