Question 1 :
Assertion: Zinc is used in the galvanization of iron. Reason: Its coating on iron articles increases their life by protecting them from rusting.

Question 4 :
Process of depositing a thin layer of zinc metal on iron objects is called:

Question 6 :
The complete loss of an electron of one atom to another atom with the consequent formation of electrostatic charges is said to be

Question 9 :
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 12 :
Most of the metals which occurs in native state in nature:

Question 14 :
In case of formation of ionic compounds, the electronegativity difference between them is&#160;less than 1.7.<br/>

Question 16 :
When an element of very low ionization&#160;potential reacts with an element of very high&#160;electron affinity, then :

Question 22 :
State whether true or false :<br/><br/>All the elements having one electron in their outermost shell are metals.

Question 23 :
The bonds present in $\left( { N }_{ 2 }{ O }_{ 5 } \right) $ are:<br/>

Question 26 :
A magnesium ion has a net positive charge while the magnesium atom has __________.&#160;

Question 27 :
In CaF$_2$, the number of electron(s) transferred from calcium to fluorine atoms are_____.

Question 28 :
During electrolytic refining of copper.<br/>(a) Pure copper acts as anode.<br/>(b) Pure copper acts as cathode.<br/>(c) Impure copper acts as anode.<br/>(d) Impure copper acts as cathode.<br/>

Question 29 :
The attraction between molecules and salt, when a salt is dissolved in water molecules, is&#160;:

Question 31 :
&#160;Galvanizing is a process of coating iron with a&#160;metal to prevent it from rusting. The metal is :

Question 35 :
On the basis of following features identify the correct option:<br/>I. This metal is not obtained in free state.<br/>II. This metal is obtained by electrolysis of their chlorides&#160;in molten state.

Question 36 :
The second most abundant metal present in the crust of the earth is :

Question 39 :
During extraction of metals, electrolytic refining is used to obtain pure metals.&#160;Material which will be used as anode, for refining of silver metal by this process, is:<br/>

Question 40 :
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 41 :
$Li$, $K$, $Ca$, $Na$, $Mg$, $Al$, $Zn$, $Fe$, $Pb$, $Cu$, $Hg$, $Ag$<br/>Which metal will displace hydrogen from acids but not water?

Question 42 :
The process of protecting iron by coating with zinc is called:

Question 45 :
The process to heat the ore in the presence of excess supply of air below its melting point is called as ________.<br/>

Question 46 :
Which among the following metals is employed to provide cathodic protection to iron?

Question 49 :
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.