IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Which planet has maximum satellite? 1710 05b5cc6a1e4d2b4197774caef
5b5cc6a1e4d2b4197774caef- 1Saturnfalse
- 2Earthfalse
- 3Jupitertrue
- 4Marsfalse
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उत्तर : 3. "Jupiter"
व्याख्या :
Answer: C) Jupiter Explanation: Jupiter has 67 natural satellites. Eight of Jupiter's moons are regular satellites, with 4 large, spherical moons, and 4 smaller moons that orbit closer to Jupiter. Jupiter has an additional 55 tiny irregular satellites. The planet with the second highest number of moons is Saturn, with 61 moons. Earth has only one natural satellite i.e, Moon. Mercury and Venus have no satellites.
प्र: I will disappear every time you say my name. What am I? 1687 05b5cc6a1e4d2b4197774caf4
5b5cc6a1e4d2b4197774caf4- 1Thieffalse
- 2Silencetrue
- 3Shadowfalse
- 4Nonefalse
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उत्तर : 2. "Silence"
व्याख्या :
Answer: B) Silence Explanation:
प्र: Flower : Bud :: Plant : ? 1524 05b5cc6a1e4d2b4197774caf9
5b5cc6a1e4d2b4197774caf9- 1Seedtrue
- 2Leaffalse
- 3Twigfalse
- 4Rootfalse
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उत्तर : 1. "Seed"
व्याख्या :
Answer: A) Seed Explanation: A bud is an undeveloped or embryonic shoot and may be specialized to develop flowers. Similarly, Seed is undeveloped and may be developed into a plant. Hence, Flower : Bud :: Plant : Seed.
प्र: Which of the following is the lightest metal? 2312 05b5cc6a1e4d2b4197774cae5
5b5cc6a1e4d2b4197774cae5- 1Lithiumtrue
- 2Silverfalse
- 3Mercuryfalse
- 4Leadfalse
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उत्तर : 1. "Lithium"
व्याख्या :
Answer: A) Lithium Explanation: Lithium is the lightest metal and the lightest solid element. It is a soft, silvery-white alkali metal. Under standard conditions. Like all alkali metals, lithium is highly reactive and flammable and is stored in mineral oil.
प्र: Which is a common first indicator of an approaching thunderstorm? 17086 05b5cc6a1e4d2b4197774caea
5b5cc6a1e4d2b4197774caea- 1too hotfalse
- 2heavy windfalse
- 3a buildup of dark cloudstrue
- 4lightningfalse
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उत्तर : 3. "a buildup of dark clouds"
व्याख्या :
Answer: C) a buildup of dark clouds Explanation: The first indicator of an approaching thunderstorm is a buildup of dark clouds. A thunderstorm is a storm with lightning and thunder; it is usually produced by heavy rain, gusty wind, and the cumulonimbus cloud. The thunderstorm is made up of moisture, unstable air and lift.
प्र: How many pints of blood in the human body? 2378 05b5cc6a1e4d2b4197774cadb
5b5cc6a1e4d2b4197774cadb- 16 - 8false
- 210 - 12true
- 38 - 10false
- 45 - 7false
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उत्तर : 2. "10 - 12"
व्याख्या :
Answer: B) 10 - 12 Explanation: Scientists estimate the volume of blood in a human body to be approximately 7 percent of body weight. An average adult body with a weight of 150 to 180 pounds will contain approximately 4.7 to 5.5 liters of blood. An average child with a body weight of 80 pounds will have approximately half the amount of blood as an adult. The amount of blood in a human body varies, depending on factors such as age, sex, overall health and even where a person lives. For example, men tend to have more blood than women of comparable size and weight. Interestingly, people who live at high altitudes may have up to two liters of extra blood compared to those who live at lower altitudes. Because the air at higher altitudes has less oxygen, people who live at high altitudes need extra blood to deliver the right amount of oxygen to their lungs. We know that 1 Pint = 0.473 liters Hence, an average amount of blood in the human body = 4.7 - 5.5 lit = 10 - 12 pints.
प्र: Soil erosion can be prevented by 1844 05b5cc6a1e4d2b4197774cad1
5b5cc6a1e4d2b4197774cad1- 1Removal of vegetationfalse
- 2Overgrazingfalse
- 3Afforestationtrue
- 4Increasing bird populationfalse
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उत्तर : 3. "Afforestation"
व्याख्या :
Answer: C) Afforestation Explanation: The four most common soil erosion prevention methods are vegetation, geotextiles, mulch, and retaining walls. By planting grass in areas of concentrated water flow, farmers can prevent much of the soil erosion that results from runoff, as the grass stabilizes the soil while still providing an outlet for drainage. Preventing soil erosion is critical in protecting your property and exposed soil, whether from wind, weather, running water, and even the after-effects of the forest fire.
प्र: In economics,"capital" refers to 1407 05b5cc6a1e4d2b4197774cad6
5b5cc6a1e4d2b4197774cad6- 1mineral resourcesfalse
- 2the money in one's pocketfalse
- 3consumer goodsfalse
- 4buildings and equipmenttrue
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उत्तर : 4. "buildings and equipment"
व्याख्या :
Answer: D) buildings and equipment Explanation: Capital refers to buildings and equipment i.e, goods which are used by workers to produce other goods such as machinery, land, ... Capital has a number of related meanings in economics, finance, and accounting. In economics, Capital comprises one of the four major factors of production, the others being land, labor, and entrepreneurship. In finance and accounting, capital generally refers to financial wealth, especially that used to start or maintain a business.

