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.
زہریلے مادے اور گیسیں جو کھلی کچرے کے ڈھیروں سے تیار کی جاتی ہیں وہ _____ کا سبب بنتی ہیں؟
A. Water pollution
B. Air pollution
C. Both A and B
D. None of these
Check answer and explanation
Answer: Both A and B
Explanation Open garbage dumps release toxic gases into the air, leading to air pollution (e.g., methane, ammonia ). When rainwater passes through waste, it f orms leachate , which contaminates groundwater and causes water pollution.
Explanation The old name of Nitrogen is Azote . This name, derived from the Greek word "azotikos" meaning " no life ". It was given because nitrogen gas does not support respiration, making it inert or "lifeless" in this context.
Explanation The propagation of radio signals is greatly influenced by the ionosphere. Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another in a vacuum , or into various parts of the atmosphere . Propagation of thes e high-frequency waves over short distances is therefore strongly influenced by the buildings, trees, and terrain in the vicinity of, and between, the transmitter and receiver. SH2-8-2023
Explanation The central color of a rainbow is Green ROYGBIV: This mnemonic helps remember the order of colors. Red (outermost) Orange Yellow Green (central) Blue Indigo Violet (innermost)
قابل تجدید توانائی ذرائع یا عمل سے حاصل ہوتی ہے جو مستقل طور پر بھرتی رہتی ہیں۔ مندرجہ ذیل میں سے کون سا قابل تجدید توانائی کے ذرائع نہیں ہے؟
A. Geothermal energy
B. Biomass energy
C. Nuclear energy
D. Solar energy
Check answer and explanation
Answer: Nuclear energy
Explanation Nuclear energy is produced by splitting atoms (fission) and relies on uranium , a finite resource, making it non-renewable . Renewable sources like solar, geothermal, and biomass naturally replenish over time.
Explanation Natural gas burns more cleanly than other fossil fuels. It produces less carbon dioxide (CO₂) and fewer pollutants. This makes it more environmentally friendly compared to coal and oil. Main component of natural gas is methane (CH₄). It is widely used for cooking, heating, and electricity generation. Last verified on 06-05-2026
Explanation Bernoulli’s Principle explains that faster airflow over the wings creates lower pressure, producing lift that keeps the airplane in the air.
Explanation Composition of Air : Nitrogen → 78% Oxygen → 20.95% Argon → 0.93% Carbon dioxide → 0.04% Other gases → very small traces Last verified on 30-04-2026
Explanation The ozone hole happens when the protective ozone layer in the stratosphere above the South Pole begins to thin every September. All Important Questions Related to "OZONE" The s tratospheric ozone layer is Earth's “ sunscreen ” protecting living things from too much ultraviolet radiation from the sun. Oxygen layer in the atmosphere Ozone protects us from the harmful ultraviolet radiation of the sun. Ozone formula : O3 The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere. The ozone layer is depleting : Air pollution ND17-7-2023
ماحول کی کون سی تہہ سورج سے الٹرا وائلٹ شعاعوں کو باہر نکالنے کے لیے ذمہ دار ہے؟
A. None
B. Troposphere
C. Mesosphere
D. Stratosphere
Check answer and explanation
Answer: Stratosphere
Explanation The stratosphere prevents UV rays from coming surface of the Earth 90% of the ozone in the atmosphere is occupied by the Stratosphere. Ozone molecules are constantly formed and destroyed in the stratosphere Additional Information Ozone is a molecule that contains three oxygen atoms The atmosphere can be divided into five layers: Troposphere ( all weather occurs within this layer ) Stratosphere ( ozone layer absorbs UV rays) Mesosphere ( coldest layer of the atmosphere ) Thermosphere ( radiowaves transmitted from the Earth and reflected by this layer ) Exosphere ( molecules and atoms escape )
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