Question 2 :
The phenomenon of existence of an element in more than one physical form is called allotropy.<br/>

Question 4 :
Statement I: Water is a polar molecule.<br/>Statement II:&#160; Water has polar covalent bonds.<br/>

Question 6 :
<p class="wysiwyg-text-align-left"><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">The$<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">IUPAC$<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">name of $[Ni(NH_{3})_{4}][NiCl_{4}]$<i></i><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">is:</p>

Question 8 :
An organic compound 'A' produces a gas with brisk effervescence when sodium bicarbonate is added to it. The compound 'A' contains same number of carbons as in ethane. The compound 'A' reacts with ethanol to form a sweet smelling compound 'C' in presence of conc. $H_2SO_4$ acid. Then the name of compound A and the gas evolved is :