question_answer

Fill in the blanks by choosing an appropriate option.

When sugar is dissolved in water, it undergoes a ___(i)___ change but if sugar is heated in a test tube over the Bunsen burner flame, it first melts, turns brown and finally turns ___(ii)___. The new substance formed is ___(iii)___ and the change is a ___(iv)___ change.

 

A)

(i)	(ii)	(iii)	(iv)
Physical, reversible	Black	Charcoal	Chemical, irreversible

               

B)

(i)	(ii)	(iii)	(iv)
Physical, irreversible	Black	Coal	Chemical, irreversible

               

C)

(i)	(ii)	(iii)	(iv)
Physical, irreversible	Red	Charcoal	Chemical, reversible

               

D)

(i)	(ii)	(iii)	(iv)
Physical, reversible	Red	Coal	Chemical, reversible