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.

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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.

91. What are soft drinks made with chilled water rather than water at room temperature?

کمرے کے درجہ حرارت پر پانی کے بجائے ٹھنڈے پانی سے بنائے جانے والے سافٹ ڈرنکس کیا ہیں؟

Check answer and explanation

Answer: Chilled water attracts more carbon dioxide

Explanation Chilled wate r is used to cool a building's air and equipment.

92. Which is the lowest layer of atmosphere?

ماحول کی نچلی ترین پرت کون سی ہے؟

Check answer and explanation

Answer: Troposphere

Explanation Troposphere is the lowest layer of the atmosphere where all weather phenomena occur and where we live. Exosphere is the outermost layer, gradually merging into space, containing very thin air and satellites.

93. The term cosmic is most closely related to:

Check answer and explanation

Answer: Astronomy

Explanation The term "cosmic" pertains to the universe, space, and celestial phenomena .

94. Ozone layer protect us from the harmful _______ of the Sun.

اوزون کی تہہ ہمیں سورج کے نقصان دہ _______ سے بچاتی ہے۔

Check answer and explanation

Answer: Ultraviolet rays

Explanation The ozone layer acts as Earth’s natural sunscreen, protecting life from the sun’s harmful ultraviolet (UV) radiation . UV radiation can cause skin cancer, eye damage, and harm to plants and animals . Additional information : Chemical Formula: O₃ (three oxygen atoms) Layer Location: Stratosphere, 15–40 km above Earth Function: Absorbs UV-B and UV-C rays from the Sun Depletion Causes: Air pollution, CFCs, industrial chemicals Protection Measures: Reduce CFC use, ozone-friendly products Last verified on 09-03-2026

95. Carbon is an integral part of an ecosystem. It is cycled throughout the ecosystem as it is used and then reused. It is necessary for all life to exist. Name the process in which plants uses carbon dioxide?

کاربان ماحولیاتی نظام کا ایک لازمی حصہ ہے۔ اسے پورے ماحولیاتی نظام میں سائیکل کیا جاتا ہے کیونکہ اسے استعمال کیا جاتا ہے اور پھر دوبارہ استعمال کیا جاتا ہے۔ تمام زندگی کا وجود ضروری ہے۔ اس عمل کا نام بتائیں جس میں پودے کاربن ڈائی آکسائیڈ استعمال کرتے ہیں؟

Check answer and explanation

Answer: Photosynthesis

Explanation Photosynthesis is the process by which plants, algae, and some bacteria. It use energy from sunlight to convert carbon dioxide and water into glucose and oxygen.

96. Area where rainfall is very low resulting barren area is called?

وہ علاقہ جہاں بارش بہت کم ہوتی ہے جس کے نتیجے میں بنجر علاقہ کہا جاتا ہے؟

Check answer and explanation

Answer: Desert

Explanation Deserts are areas with very low rainfall , typically less than 25 centimeters (10 inches) per year. It resulting in a barren and often sandy landscape with limited vegetation and wildlife.

97. The lowest zone of atmosphere containing about seventy five percent of total mass of atmosphere and ninety percent of its water vapour is called?

فضا کی وہ سب سے نچلی تہہ جس میں فضا کی کل کمیت کا تقریباً پچہتر فیصد اور اس کے پانی کے بخارات کا نوے فیصد پایا جاتا ہے، کیا کہلاتی ہے؟

Check answer and explanation

Answer: Troposphere

Explanation The lowest layer of Earth's atmosphere is called the troposphere . This layer contains about 75-80% of the atmosphere's total mass and up to 99% of its water vapor.

98. Greenhouse effect causes

گرین ہاؤس اثر کا سبب بنتا ہے۔

Check answer and explanation

Answer: Global warming

Explanation IMPORTANT QUESTIONS AND INFORMATION RELATED TO "GREEN HOUSE EFFECT" Green House Effect means the Trapping of Solar energy due to atmospheric carbon dioxide The greenhouse effect is a good thing . It warms the planet to its comfortable average of 57 degrees Fahrenheit (13.9 degrees Celsius) The greenhouse effect keeps life on earth, well, livable. The Green House Effect is caused by an excess of Carbon dioxide The greenhouse effect causes Global warming Methane gas is 80 times potent than CO2 in Green House Effect ND2-03-2023 ********* VU FIA ASSISTANT PAST PAPER 01-01-2022

99. Trees that grow in coastal area, protect shorelines from being damages and act as nurseries for marine organism is _____?

جو درخت ساحلی علاقے میں اگتے ہیں ، ساحل کی لائنوں کو نقصانات ہونے سے بچاتے ہیں اور سمندری حیاتیات کے لئے نرسری کی حیثیت سے کام کرتے ہیں؟

Check answer and explanation

Answer: Mangroves

Explanation Mangroves grow in salty coastal areas and have roots that stabilize the shoreline, reducing erosion. They also serve as nurseries for marine life , providing shelter and breeding grounds for fish and other organisms.

100. ______ are mostly found near the earth’s surface having deep color.

زیادہ تر زمین کی سطح کے قریب پائے جاتے ہیں جس کا رنگ گہرا ہوتا ہے۔ _____

Check answer and explanation

Answer: Nimbus Clouds

Explanation Cumulus clouds are fluffy, white clouds with a deep color at the base and are found near the Earth's surface. They usually indicate fair weather but can develop into storm clouds (cumulonimbus).

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