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.

Return to all Everyday Science topics to choose your next area of study. Read the MCQ study guide to plan your revision, or try a Everyday Science practice quiz.

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.

211. Tapeworm that live inside organisms and feed on the nutrients of the food organism eat are an example of _____?

ٹیپ ورم جو حیاتیات کے اندر رہتے ہیں اور غذائی اجزا کے غذائی اجزا کو کھاتے ہیں _____ کی مثال ہیں؟

Check answer and explanation

Answer: Parasitism

Explanation Tapeworms are a type of parasite that live inside the digestive system of their host organism (such as humans or animals) and feed on the nutrients absorbed by the host. They do not contribute to the host's survival or well-being, and can in fact harm the host by competing for nutrients and causing disease.

212. Sound cannot travel through ______?

آواز ______ سے گزر نہیں سکتی؟

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Answer: Vacuum

Explanation Because sound is just vibrating air, space has no air to vibrate and therefore no sound in a vacuum . Sound waves below 20 Hz are known as infrasound . Sound waves above 20 kHz are known as ultrasound Sound waves transmit a medium such as a gas, liquid, or solid. The speed of sound in air is about 343 meters per second The sound travels at 1,481 m/s in water The speed of sound in a vacuum is zero meters per second.

213. The most abundant gase in the earth's atmosphere by volume is _____?

حجم کے لحاظ سے زمین کے ماحول میں سب سے زیادہ وافر گیس _____ ہے؟

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Answer: Nitrogen

Explanation Nitrogen makes up about 78% of the Earth’s atmosphere. Oxygen is about 21%, Other gases like argon and carbon dioxide are in very small amounts. Last updated by NA on 28April 2026

214. The second most important lawyer of Earth atmosphere is

زمینی ماحول کا دوسرا اہم ترین وکیل ہے۔

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Answer: stratosphere

Explanation The stratosphere is a layer of Earth's atmosphere. It is the second layer of the atmosphere as you go upward

215. The average temperature of the surface of the earth increases is known as?

زمین کی سطح کے اوسط درجہ حرارت میں اضافے کو کیا کہا جاتا ہے؟

Check answer and explanation

Answer: Global Warming

Explanation Global warming is the gradual increase in Earth's surface temperature, primarily caused by human activities releasing greenhouse gases. It leads to rising temperatures , extreme weather events, and altered ecosystems.

216. Deforestation causes ______?

جنگلات کی کٹائی ______ کا سبب بنتی ہے؟

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Answer: Pollution by reducing oxygen levels and increasing CO2 levels in the atmosphere

Explanation Deforestation reduces the number of trees that absorb CO₂ and release oxygen. This leads to higher CO₂ levels , contributing to pollution and climate change.

217. The biggest source of energy and heat is:

توانائی اور حرارت کا سب سے بڑا ذریعہ کیا ہے

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Answer: Sun

Explanation The energy of the sun is the original source of most of the energy found on earth. The principal source of energy: the Sun **** ND10-1-2023

218. The coldest region in atmosphere is ______?

ماحول کا سب سے سرد خطہ ______ ہے؟

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Answer: Mesosphere

Explanation The mesosphere is the coldest layer of the atmosphere, with temperatures dropping as low as -90°C . It lies above the stratosphere and below the thermosphere .

219. The green plants, algae, and some bacteria that can make their own food by using H2O and CO2 in the presence of sun's energy are called?

وہ سبز پودے، الجی اور کچھ بیکٹیریا جو سورج کی توانائی کی موجودگی میں پانی اور کاربن ڈائی آکسائیڈ کو استعمال کرکے اپنی خوراک بناسکتے ہیں، ان کو _____ کہتے ہیں؟

Check answer and explanation

Answer: Producers

Explanation Producers, also known as autotrophs. They are organisms that can produce their own food through photosynthesis, using water (H2O), carbon dioxide (CO2), and sunlight to produce glucose and oxygen.

220. All of the following are pollutants, which one is not produced by vehicle?

مندرجہ ذیل میں سے تمام آلودگی ہیں ، کون سا گاڑی کے ذریعہ تیار نہیں کیا جاتا ہے؟

Check answer and explanation

Answer: CFCs

Explanation CFCs (Chlorofluorocarbons) are not produced by vehicles . They are primarily released from refrigerants and industrial processes . CO2, NO2, and CO are all pollutants emitted by vehicle exhaust.

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