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Federal Board SSC-1 Chemistry Test # 3: Section-B (Marks 18)

This document contains a chemistry test with multiple choice and written response questions covering various topics: 1. The test is divided into four sections (A, B, C, D) testing different concepts in chemistry. 2. Section B contains 6 short answer questions testing concepts like the use of tin in food cans, chemistry and photography, oxidation states, electrolytic cells, and properties of solids and gases. 3. Section C contains 5 short answer questions testing electrochemical industries, electroplating, oxidizing/reducing agents, boiling points, and gas laws. 4. Section D contains 2 long answer questions asking students to explain processes like metal extraction from ores, electrolytic/galvan

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Sohail Hameed
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45 views2 pages

Federal Board SSC-1 Chemistry Test # 3: Section-B (Marks 18)

This document contains a chemistry test with multiple choice and written response questions covering various topics: 1. The test is divided into four sections (A, B, C, D) testing different concepts in chemistry. 2. Section B contains 6 short answer questions testing concepts like the use of tin in food cans, chemistry and photography, oxidation states, electrolytic cells, and properties of solids and gases. 3. Section C contains 5 short answer questions testing electrochemical industries, electroplating, oxidizing/reducing agents, boiling points, and gas laws. 4. Section D contains 2 long answer questions asking students to explain processes like metal extraction from ores, electrolytic/galvan

Uploaded by

Sohail Hameed
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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THE MARK ACADEMY

Federal Board SSC-1


Chemistry Test # 3
Time Allowed: 2.15 hours Total Marks: 53

SECTION-B (MARKS 18)


Q.2 Attempt any SIX parts from the following. All parts carry equals marks. (6*3=18)
i. Why tin plated steel is used to make food cans?
ii. Explain how chemistry interact with photography?
iii. Define oxidation state? Also find oxidation state of S in the following compounds:
a)- b)-
iv. Define Electrolytic cell and also write its importance?
v. Differentiate between amorphous and crystalline solids.
vi. How does temperature affect vapour pressure of a liquid?
vii. Define allotropes. Also explain the allotropic form of Phosphorus?
viii. Why does evaporation lower the temperature of liquid?

SECTION-C (MARKS 15)


Q.3 Attempt any FIVE parts from the following. All parts carry equals marks. (5*3=15)
i. For what purpose electrochemical industries are used.
ii. What do you know about electroplating on steel? Explain.
iii. Define oxidizing and reducing agents. Elaborate with examples.
iv. Identify oxidizing and reducing agent in the following reaction:
a)-
b)-
v. Explain the effect of external pressure on boiling point.
vi. Define the following terms:
a)- Sublimation b)- Melting Point c)-Distillation
vii. State Charles’s Law. Explain volume-temperature relationship using Charles’s Law.

Temperature( C) Volume(cm ) Temperature( C) Volume(cm )


25 117.5 35 121.3
30 119.4 40 123.2
Temperature-volume data of a gas at 1 atm

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THE MARK ACADEMY

SECTION-D (MARKS 20)

NOTE: Attempt any TWO parts from the following. All parts carry equals marks. (2*10=20)
Q.4 a. Describe the method of recovering metal from its ores. (04)
b. Draw and explain the following: (06)
(a) Electrolytic Cells (b) Galvanic Cells (Daniel Cells)

Q.5 a. Explain manufacture of Sodium Metal from fused Sodium Chloride. (05)
b. Explain briefly what is corrosion? Also write its prevention. (05)

Q.6 a. Explain the effect on the volume of a gas by a change in the (04)
(a) Pressure (b) Temperature
b. Explain the Typical Properties of Gasses. (06)

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