Question 1 :
$Li$, $K$, $Ca$, $Na$, $Mg$, $Al$, $Zn$, $Fe$, $Pb$, $Cu$, $Hg$, $Ag$<br/>Which metal will displace hydrogen from acids but not water?

Question 2 :
Assertion: Ionic compounds are bad conductors of electricity. Reason: In ionic compounds mobile ions exists.

Question 3 :
A solid compound &#34;A&#34; consists of simple ions.<br/>Nature of the bond present in A will be:

Question 5 :
Which of the following metals exist in their native state in nature?<br/>(i) Ca<br/>(ii) Au<br/>(iii) Zn<br/>(iv) Ag<br/>

Question 7 :
The process of protecting iron by coating with zinc is called:

Question 8 :
What are the conditions for a species to act as a donor and an acceptor during dative bond formation?

Question 11 :
When manganese dioxide is heated with aluminium powder, the products obtained are _________ .<br/>

Question 14 :
Process of depositing a thin layer of zinc metal on iron objects is called:

Question 17 :
In electrolytic refining, which one is the anode and which is cathode?

Question 18 :
The bonds present in $\left( { N }_{ 2 }{ O }_{ 5 } \right) $ are:<br/>

Question 19 :
Which one of the methods given in column- I is applied for the extraction of the metal given in column II:<br/><blockquote><table class="wysiwyg-table"> <tbody><tr> <td><b>Column -I</b></td> <td><b>Column - II</b></td> </tr> <tr> <td>(A)&#160;Electrolytic reduction</td> <td>(i)&#160;Aluminium</td> </tr> <tr> <td>(B) Reduction with carbon</td> <td>(ii)&#160;Zinc</td> </tr> <tr> <td>(C) Reduction with aluminium</td> <td>(iii)&#160;Sodium</td> </tr> <tr> <td>&#160;</td> <td>(iv)&#160;Iron</td> </tr> <tr> <td>&#160;</td> <td>(v)&#160;Manganese</td> </tr> <tr> <td>&#160;</td> <td>(vi)&#160;Chromium</td> </tr></tbody></table></blockquote>

Question 20 :
We have $CuSO_4$ solutions (blue) in two&#160;beakers A and B. In beaker A we add Ag pieces and in B we add&#160;Zn&#160;pieces. What will happen&#160;in A if :<br/>1.&#160;$Cu^{2+}$ is reduced to Cu<br/>2. no reaction.