अंग्रेजी भाषा परीक्षा – IELTS / PTE

English Test – IELTS / PTE · ६,९९८ प्रश्न

सबै विषय Grammar Vocabulary & Collocations Reading (short passages) Writing tasks (structure, linking words) Speaking & Listening skills Test format, scoring and strategy

६,९९८ प्रश्न उपलब्ध। मोड छान्नुहोस्:

IELTS / PTE: प्रश्न र उत्तर

सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।

Read the passage and answer the question. Throughout the day, a chemical called adenosine slowly builds up in the brain and makes us feel sleepy. Caffeine works by blocking the brain's adenosine receptors, so we feel more alert even though our bodies may still be tired. The effect does not disappear quickly: caffeine stays in the body for several hours. For this reason, sleep experts advise people who have trouble sleeping to avoid coffee, strong tea and cola in the afternoon and evening. How does caffeine make people feel more alert?

💬 टिप्पणी / गल्ती रिपोर्ट (०)
छलफल / प्रश्न उत्तरमा गल्ती छ
टिप्पणी जाँचपछि मात्र देखिन्छ।
Read the passage and answer the question. A vacuum flask, often called a Thermos after an early brand, keeps hot drinks hot and cold drinks cold for many hours. It has two walls with a vacuum between them. Because there is almost no air in the gap, heat cannot easily pass through by conduction or convection. The inner surfaces are usually silvered like a mirror, which reflects heat radiation back. The weakest point is the stopper, so most of the heat that escapes does so through the top. According to the passage, where does most heat escape from a vacuum flask?

💬 टिप्पणी / गल्ती रिपोर्ट (०)
छलफल / प्रश्न उत्तरमा गल्ती छ
टिप्पणी जाँचपछि मात्र देखिन्छ।
Read the passage and answer the question. A vacuum flask, often called a Thermos after an early brand, keeps hot drinks hot and cold drinks cold for many hours. It has two walls with a vacuum between them. Because there is almost no air in the gap, heat cannot easily pass through by conduction or convection. The inner surfaces are usually silvered like a mirror, which reflects heat radiation back. The weakest point is the stopper, so most of the heat that escapes does so through the top. Why can heat not pass easily through the walls of a vacuum flask?

💬 टिप्पणी / गल्ती रिपोर्ट (०)
छलफल / प्रश्न उत्तरमा गल्ती छ
टिप्पणी जाँचपछि मात्र देखिन्छ।
Read the passage and answer the question. On a clear night, stars appear to twinkle, but the stars themselves are not flickering. Their light travels through the Earth's atmosphere, where layers of moving air at different temperatures bend it slightly in changing directions. Because stars are so far away, each one appears as a tiny point, and these small changes make it seem to jump and shimmer. Planets are much closer and appear as tiny discs rather than points, so they usually shine with a steadier light. This is one reason why astronomers build telescopes on high mountains or launch them into space. Based on the passage, why are telescopes built on high mountains?

💬 टिप्पणी / गल्ती रिपोर्ट (०)
छलफल / प्रश्न उत्तरमा गल्ती छ
टिप्पणी जाँचपछि मात्र देखिन्छ।
Read the passage and answer the question. On a clear night, stars appear to twinkle, but the stars themselves are not flickering. Their light travels through the Earth's atmosphere, where layers of moving air at different temperatures bend it slightly in changing directions. Because stars are so far away, each one appears as a tiny point, and these small changes make it seem to jump and shimmer. Planets are much closer and appear as tiny discs rather than points, so they usually shine with a steadier light. This is one reason why astronomers build telescopes on high mountains or launch them into space. Why do planets usually twinkle less than stars?

💬 टिप्पणी / गल्ती रिपोर्ट (०)
छलफल / प्रश्न उत्तरमा गल्ती छ
टिप्पणी जाँचपछि मात्र देखिन्छ।
Read the passage and answer the question. On a clear night, stars appear to twinkle, but the stars themselves are not flickering. Their light travels through the Earth's atmosphere, where layers of moving air at different temperatures bend it slightly in changing directions. Because stars are so far away, each one appears as a tiny point, and these small changes make it seem to jump and shimmer. Planets are much closer and appear as tiny discs rather than points, so they usually shine with a steadier light. This is one reason why astronomers build telescopes on high mountains or launch them into space. What causes stars to twinkle, according to the passage?

💬 टिप्पणी / गल्ती रिपोर्ट (०)
छलफल / प्रश्न उत्तरमा गल्ती छ
टिप्पणी जाँचपछि मात्र देखिन्छ।
Read the passage and answer the question. Why is the sea salty while most rivers are not? As rain falls and flows over rocks, it dissolves tiny amounts of minerals, including salts. Rivers carry these dissolved minerals to the sea. When sea water evaporates in the heat of the sun, the water rises into the air but the salts are left behind. Over millions of years, this process has slowly increased the amount of salt in the oceans. River water also contains salts, but in amounts far too small for us to taste. Why does the sea remain salty even though water evaporates from it?

💬 टिप्पणी / गल्ती रिपोर्ट (०)
छलफल / प्रश्न उत्तरमा गल्ती छ
टिप्पणी जाँचपछि मात्र देखिन्छ।
Read the passage and answer the question. Why is the sea salty while most rivers are not? As rain falls and flows over rocks, it dissolves tiny amounts of minerals, including salts. Rivers carry these dissolved minerals to the sea. When sea water evaporates in the heat of the sun, the water rises into the air but the salts are left behind. Over millions of years, this process has slowly increased the amount of salt in the oceans. River water also contains salts, but in amounts far too small for us to taste. According to the passage, where does the salt in the sea originally come from?

💬 टिप्पणी / गल्ती रिपोर्ट (०)
छलफल / प्रश्न उत्तरमा गल्ती छ
टिप्पणी जाँचपछि मात्र देखिन्छ।
Read the passage and answer the question. Why do zebras have stripes? Scientists have proposed many explanations, including camouflage, confusing predators and keeping cool. In recent years, the explanation with the strongest experimental support is that stripes discourage biting flies. In one study, flies landed far less often on horses wearing striped coats than on horses in plain coats. Flies seem to find it hard to slow down and land accurately on striped surfaces. Even so, researchers admit that stripes may serve more than one purpose. What is the writer's final position?

💬 टिप्पणी / गल्ती रिपोर्ट (०)
छलफल / प्रश्न उत्तरमा गल्ती छ
टिप्पणी जाँचपछि मात्र देखिन्छ।
Read the passage and answer the question. Why do zebras have stripes? Scientists have proposed many explanations, including camouflage, confusing predators and keeping cool. In recent years, the explanation with the strongest experimental support is that stripes discourage biting flies. In one study, flies landed far less often on horses wearing striped coats than on horses in plain coats. Flies seem to find it hard to slow down and land accurately on striped surfaces. Even so, researchers admit that stripes may serve more than one purpose. Why does the passage mention horses wearing striped coats?

💬 टिप्पणी / गल्ती रिपोर्ट (०)
छलफल / प्रश्न उत्तरमा गल्ती छ
टिप्पणी जाँचपछि मात्र देखिन्छ।

यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।