Question 2 :
<div><span>Non-metals are usually poor conductors of heat and electricity. They are&#160;non-lustrous, non-sonorous, non-malleable, and are colored.</span></div>Non-metal which is required for combustion is ______________.<br/>

Question 3 :
Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results were tabulated as below:<div><br/><table class="wysiwyg-table"><tbody><tr><td>Metal</td><td>Iron (II) Sulphate</td><td>Copper (II) sulphate</td><td>Zinc sulphate</td><td>Silver nitrate</td></tr><tr><td>A</td><td>No reaction</td><td>Displacement</td><td></td><td></td></tr><tr><td>B</td><td>Displacement</td><td></td><td>No reaction</td><td></td></tr><tr><td>C</td><td>No reaction</td><td>No reaction</td><td>No reaction</td><td>Displacement</td></tr><tr><td>D</td><td>No reaction</td><td>No reaction</td><td>No reaction</td><td>No reaction</td></tr></tbody></table><br/></div><div>Which is the most reactive metal?</div>

Question 4 :
<span>A metal which reacts with cold water vigorously producing hydrogen is:<br/></span>

Question 7 :
2 ml each of concentrated $HCl$, $HNO_{3}$ and a mixture of concentrated $HCl$ and concentrated $HNO_{3}$ in the ratio of 3 : 1 were taken in test&#160;tubes labelled as A, B and C. A small piece of metal was put in&#160;each test tube. No change occurred in test tubes A and B but the&#160;metal got dissolved in test tube C respectively. The metal could be :<br/>

Question 9 :
Name two product of the given reaction.<div><span>$Zn &#160; +&#160;\underset{(Steam)}{H_2O} &#160; &#160;\rightarrow &#160; &#160; &#160; $</span><br/></div>

Question 10 :
The conduction of electricity through&#10;a solution involves the movement of_________ particles.

Question 14 :
Arrange the following metals in the decreasing order of their chemical reactivity placing the most active first. The metals are&#160;<span>Cu, Mg, Fe, Na, Ca, Zn.</span>

Question 17 :
<span>During extraction of metals, electrolytic refining is used to obtain pure metals.&#160;</span>Material which will be used as anode, for refining of silver metal by this process, is:<br/>

Question 18 :
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 19 :
During the formation of ionic bond ________transfer takes place from one atom to the others.

Question 20 :
How can you tell that a metal is reacting with water?

Question 21 :
Which of the following metal evolves hydrogen on reacting with cold dilute&#160;$HNO_{3}$?&#160;

Question 22 :
A metal gives lilac colour in bunsen flame and the solution of its oxide turns red litmus paper blue. The metal is?

Question 24 :
The gas given off when a metal reacts with an acid is