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Chemistry

Write True or False against the following statements:
(a) Cutting of paper into pieces is a chemical change.
(b) Rusting of iron is a chemical change.
(c) Earthquake is a desirable change.
(d) Melting of ice is a physical change.
(e) Burning of sugar is a temporary change.

Phy & Chem Changes

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Answer

(a) False
Correct Statement — Cutting of paper into pieces is a physical change.

(b) True

(c) False
Correct Statement — Earthquake is an undesirable change.

(d) True

(e) False
Correct Statement — Burning of sugar is a permanent change.

Answered By

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Related Questions

State whether the following are physical or chemical changes.
(a) glowing of a bulb
(b) burning of sugar
(c) heating of water
(d) growing of a piglet into a pig
(e) burning of wood
(f) passing electric current through a heater's rod
(g) water cycle in nature
(h) respiration in living beings
(i) shaping a piece of glass
(j) lightning
(k) dissolving sugar in water
(l) heating a mixture of iron fillings and sulphur
(m) mixing oil with water
(n) cutting wood into small pieces
(o) photosynthesis
(p) Digestion of food
(q) Melting of wax
(r) Boiling of an egg
(s) Slaking of lime
View Answer

Match the following:
Column A Column B
(a) Evaporation of water (i) Non-periodic change
(b) Milk turning sour (ii) Periodic change
(c) Earthquake (iii) Chemical change
(d) Change of seasons (iv) Physical change
(e) Glowing of bulb (v) Reversible change