Page 1 - HOME ASSIGNMENT-2(PRACTICE WORKSHHET)

SAI International School
Class-X

Subject_ Chemistry
Topic- Acids, Bases & Salts
Sub Topic- Study of Salts – 2. Bleaching Powder

Practice-Worksheet
Q.1 When the gases sulphur dioxide and hydrogensulphide mix in the presence of
1water, the reaction isSO2 + 2H2S ---------→ 2H2O + 3S.
Here hydrogen sulphide is acting as -
(a) an oxidising agent (b) a reducing agent
(c) a dehydrating agent (d) a catalyst

Q.2 The reagent used to distinguish iron (II) chloride and iron (III) chloride is

(a) distilled water (b) NaOH
(c) dil. HCl (d) Warm water

Q.3 Which of the following acid does not react with metals-

(a) sulphuric acid (b) phosphoric acid
(c) carbonic acid (d) nitric acid

DIRECTION:Each of these questions contains an Assertion followed by Reason. Read them
carefully and answer the question on the basis of following options. You have to select the one that
best describes the two statements.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.

(d) If Assertion is incorrect but Reason is correct.
(e) If Assertion & Reason both are incorrect.

Q.4 Assertion : When common salt is kept open, it absorbs moisture from the air.
Reason: Common salt contains magnesium chloride.

Q.5 Assertion : H2CO3 is a strong acid.

Reason : A strong acid dissociates completely or almost completely in water.

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