Question

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.


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

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

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

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

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Answer 1

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

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Answer 2

i) Physical reversible

ii) Red

iii) Coal

iv ) Chemical reversible

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