Atmosphere MCQs - Everyday Science Practice | PakExamPoint

Practise Atmosphere MCQs in Everyday Science. Attempt multiple-choice questions, check answers and revise related subtopics.

Atmosphere MCQs and revision practice

Study Atmosphere through multiple-choice questions in Everyday Science. This subtopic contains 291 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.

Use these Atmosphere MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.

Continue your revision with related topics: 100 Most Repeated MCQs of EDS PDF MCQs, Alloy MCQs, Basics of Every Day Science EDS MCQs, Biology MCQs, Botany MCQs, Branch of Science MCQs, Cell MCQs, Chemistry MCQs.

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Atmosphere: questions and answer review

Try each question before opening its answer. Record the concept behind each mistake and revisit it during your next practice session.

71. Global warming is believed to have started in the?

خیال کیا جاتا ہے کہ گلوبل وارمنگ ان میں کب شروع ہوئی تھی

Check answer and explanation

Answer: Post-industrial era

Explanation Global warming began to accelerate with the advent of the Industrial Revolution, due to increased greenhouse gas emissions. Since the start of the Industrial Revolution, in about 1750 , Human activities have increased greenhouse gas concentrations in our atmosphere. such as : burning fossil fuels including coal and oil

72. Which of the following would produce minimum environmental pollution?

مندرجہ ذیل میں سے کون کم سے کم ماحولیاتی آلودگی پیدا کرے گا؟

Check answer and explanation

Answer: Hydrogen

Explanation Hydrogen produces water (H₂O) as a byproduct when burned, making it the cleanest fuel . Coal, Diesel, and Kerosene release carbon dioxide (CO₂) and other pollutants , contributing to environmental pollution.

73. Area below ice caps which are very cold climate is called?

برف کے ٹوپوں کے نیچے کا علاقہ جس کا موسم بہت سرد ہو، اسے کیا کہا جاتا ہے؟

Check answer and explanation

Answer: Tundra

Explanation Tundra is a cold, treeless region found near the Arctic and Antarctic . Soil is often frozen (permafrost) throughout the year. Vegetation includes mosses, lichens, and low shrubs . Animals adapted: polar bears, arctic foxes, reindeer . Last verified on 13-03-2026

74. Greenhouse effect is an environmental problem which is caused by increasing amount of ________ in the atmosphere.

گرین ہاؤس اثر ایک ماحولیاتی مسئلہ ہے جو فضا میں ________ کی بڑھتی ہوئی مقدار کی وجہ سے پیدا ہوتا ہے۔

Check answer and explanation

Answer: Carbon Dioxide

Explanation The greenhouse effect is an environmental problem caused by the increasing amount of carbon dioxide (CO2) in the atmosphere. Primarily due to human activities such as burning fossil fuels , deforestation, and land-use changes. This excess CO2 traps heat and leads to global warming and climate change.

75. According to the World Commission on Environment and Development, sustainable development is defined as ______?

ماحولیات اور ترقی کے عالمی کمیشن کے مطابق ، پائیدار ترقی کو ______ کے طور پر بیان کیا گیا ہے؟

Check answer and explanation

Answer: Economic development that takes future generations into account.

Explanation Sustainable development means meeting the needs of the present without compromising the ability of future generations to meet their own needs. This definition is from the World Commission on Environment and Development (Brundtland Report).

76. Organisms in an ecosystem can be classified as producers or consumers. The producers provide food for the consumers. Name the organism that consumes both producers and other consumers?

ایک ماحولیاتی نظام میں حیاتیات کو پروڈیوسر یا صارفین کے طور پر درجہ بندی کیا جاسکتا ہے۔ پروڈیوسر صارفین کو کھانا فراہم کرتے ہیں۔ اس جاندار کا نام بتائیں جو پروڈیوسر اور دوسرے صارفین دونوں کو کھاتا ہے؟

Check answer and explanation

Answer: Omnivore

Explanation Omnivores play a crucial role in ecosystems as they help to regulate populations of both plants and animals. They can adapt to different food sources depending on availability. Examples : humans, bears, and pigs.

77. Example(s) of primary pollutants is/are _____?

بنیادی آلودگیوں کی مثال _____ ہیں؟

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Answer: All of these

Explanation Primary pollutants are emitted directly into the air from sources like vehicles and industries . Examples include carbon monoxide ( CO ), sulfur dioxide ( SO₂ ), and nitrogen dioxide ( NO₂ ).

78. Fluid changes the volume under external pressure due to

سیال بیرونی دباؤ کی وجہ سے حجم کو کس میں تبدیل کرتا ہے۔

Check answer and explanation

Answer: Compressibility

Explanation

79. What is called the amount of moisture in the air?

ہوا میں نمی کی مقدار کو کیا کہتے ہیں؟

Check answer and explanation

Answer: Humidity

Explanation The amount of water vapor in the air is called absolute humidity. The amount of water vapor in the air as compared with the amount of water that the air could hold is called relative humidity.

80. Which layer near the surface of earth is called?

زمین کی سطح کے قریب کون سی پرت کہا جاتا ہے؟

Check answer and explanation

Answer: Troposphere

Explanation The troposphere is the lowest layer of Earth's atmosphere. The Layers of atmosphere are: the troposphere, stratosphere, mesosphere and thermosphere.

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