Identify the correct statements.

(i) Hydrogen gas turns limewater milky.
(ii) Both rust formation and ice formation are chemical changes.
(iii) Mixing of an acid and a base is a chemical change accompanied by the evolution of heat energy.
(iv) Depletion of ozone layer is a physical change.

I, II, III and IV only

No worries! We‘ve got your back. Try BYJU‘S free classes today!

II and IV only

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Only III

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

I and II only

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Only III

Suggest Corrections

Similar questions

Q. (a) What is meant by chemical reaction? Explain with the help of an example.
(b) Give one example each of a chemical reaction characterised by:
(i) evolution of a gas
(ii) change in colour
(iii) formation of a precipitate
(iv) change in temperature
(v) change in state.

The chemical reaction between quicklime and water is characterised by :
(a) evolution of hydrogen gas

(b) formation of slaked lime precipitate

(d) change in colour of the product

Q. Classify the following as physical and chemical changes:
(i) Cleaning with soap and water
(ii) Cooking chicken
(iii) Formation of clouds
(iv) Making ice candy

A) Physical change - (i), (ii), (iii); chemical change - (iv)

B) Physical change - (i), (iii), (iv); chemical change - (ii)

C) Physical change - (i), (ii); chemical change - (iii), (iv)

D) Physical change - (i), (iii); chemical change - (ii), (iv)

[1 Mark]

Classify the following as physical and chemical changes:
(i) Making sugar solution
(ii) Cooking chicken
(iii) Formation of clouds
(iv) Making ice candy

Q. Fill in the blanks in the following statements:

(a) When carbon dioxide is passed through lime water, it turns milky due to the formation of
(b) The chemical name of baking soda is
(c) Two methods by which rusting of iron can be prevented are and
(d) Changes in which onlyproperties of a substance change are called physical changes.
(e) Changes in which new substances are formed are called changes.

Join BYJU'S Learning Program

Identify the correct statements. (i) Hydrogen gas turns limewater milky. (ii) Both rust formation and ice formation are chemical changes. (iii) Mixing of an acid and a base is a chemical change accompanied by the evolution of heat energy. (iv) Depletion of ozone layer is a physical change.

The correct option is C Only III

Identify the correct statements.

(i) Hydrogen gas turns limewater milky.
(ii) Both rust formation and ice formation are chemical changes.
(iii) Mixing of an acid and a base is a chemical change accompanied by the evolution of heat energy.
(iv) Depletion of ozone layer is a physical change.