Chemistry MCQs for ETEA Jobs – Test Preparation Guide
Are you preparing for the ETEA Chemistry job exam? Look no further! This guide provides a comprehensive collection of MCQs, past papers, solved questions, and study materials to help you prepare effectively and enhance your chances of success.
Key Features of This Guide
✅ Latest ETEA Chemistry MCQs (Updated for 2025)✅ Pak MCQs for General Knowledge & Current Affairs
✅ Past Papers with Solutions – Learn from previous exams
✅ Syllabus Breakdown – Understand what to study
✅ Effective Study Tips – Proven strategies for scoring high
✅ Downloadable PDFs – Get past papers in one click
Which of the following is/are purest form of carbon?
______ مندرجہ ذیل میں سے کون سی/کون سی پرفیکٹ شکلیں کاربن کی خالص شکل ہیں؟
Choices:
A. Diamond
B. Graphite
C. Bucky ball
D. Marble
✅ Answer: A. Diamond ,B. Graphite ,C. Bucky ball
📝 Explanation: Diamond, graphite, and buckyballs (fullerenes) are all allotropes of pure carbon, whereas marble is primarily calcium carbonate.
The glitter of diamond is due to?
______ ہیرا چمکتا کیوں ہے؟
Choices:
A. Because it is transparent
B. Because it is a non-conductor
C. Due to its quality of reflecting light
D. Because of its density
✅ Answer: C. Due to its quality of reflecting light
📝 Explanation: Diamond has a high refractive index, which causes total internal reflection, making it sparkle.
In colorful diamonds, different colors are present due to?
______ رنگین ہیروں میں مختلف رنگ کہاں سے آتے ہیں؟
Choices:
A. Impurities
B. Angular bonds between carbon atoms
C. Different patterns of carbon chains
D. None of the above
✅ Answer: A. Impurities
📝 Explanation: Impurities such as nitrogen (yellow), boron (blue), and radiation exposure (green) cause different diamond colors.
All of the following are different uses of hydrogen peroxide except?
______ مندرجہ ذیل تمام ہائیڈروجن پر آکسائیڈ کے مختلف استعمال ہیں سواۓ؟
Choices:
A. Used as a bleaching agent
B. Used to deodorize sewers
C. Used as fuel in space
D. Used to prepare organic peroxides
✅ Answer: All Of The Above
📝 Explanation: Hydrogen peroxide is not typically used to deodorize sewers.
Ozone is present in which of the following layers of the atmosphere?
______ اوزون کس فضائی تہہ میں موجود ہے؟
Choices:
A. Troposphere and Thermosphere
B. Troposphere and Stratosphere
C. Mesosphere
D. Thermosphere
✅ Answer: B. Troposphere and Stratosphere
📝 Explanation: The ozone layer is mainly in the stratosphere, but ozone can also be found in the troposphere as a pollutant.
Adver
In Pakistan and other countries, which of the following methods is used in the manufacture of sulfuric acid?
______ پاکستان اور دیگر ممالک میں سلفیورک ایسڈ کی تیاری میں مندرجہ ذیل میں سے کون سی طریقہ استعمال ہوتی ہے؟
Choices:
A. Contact process
B. Frasch method
C. Ostwald’s method
D. Haber’s process
✅ Answer: A. Contact process
📝 Explanation: The Contact Process is used to manufacture sulfuric acid industrially.
The process of smelting and cooling converts pig iron into?
______ پگ آئرن کو سمیلٹنگ اور ٹھنڈا کرنے کے عمل سے کیا تبدیل کیا جاتا ہے؟
Choices:
A. Silicon Steel
B. Cast iron
C. Wrought iron
D. Steel
✅ Answer: D. Steel
📝 Explanation: Pig iron is converted into steel through smelting and cooling.
Here are the questions rewritten in the requested format:
Pure iron is obtained by the reduction of which of the following in the blast furnace?
______ پگ آئرن کو بلاسٹ فرنس میں درج ذیل میں سے کس کے کمی کرنے سے حاصل کیا جاتا ہے؟
Choices:
A. Haematite
B. Magnetite
C. Iron oxide
D. Limonite
✅ Answer: A. Haematite
📝 Explanation: Haematite (Fe₂O₃) is the primary ore of iron, reduced in blast furnaces to extract pure iron.
Methane is used in daily life with the name of?
______ میتھین روزمرہ زندگی میں کس نام سے استعمال ہوتی ہے؟
Choices:
A. Carbon dioxide
B. Natural gas
C. Carbon monoxide
D. Calcium carbonate
✅ Answer: B. Natural gas
📝 Explanation: Methane is the primary component of natural gas used for cooking and heating.
When electricity is passed through neon, it glows?
______ جب نیین سے کرنٹ گزارا جاتا ہے تو یہ کس رنگ میں چمکتی ہے؟
Choices:
A. Blue
B. Green
C. Red
D. Yellow
✅ Answer: C. Red
📝 Explanation: Neon gas emits a red-orange glow when electrically excited.
Download ETEA Chemistry Past Papers PDF
For easy access to past papers, download the PDF file below:
[Download PDF Here]
By practicing past papers, you’ll learn how to manage your time effectively during the exam and understand the types of questions that typically appear.
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