प्रश्न और उत्तर का अभ्यास करें
8 प्र: ऊर्जा पिरामिड
2074 05e6b7c0fc34ec57f0d141f2c
5e6b7c0fc34ec57f0d141f2c- 1सदैव खड़ी अवस्था में होता है ।true
- 2केवल समुद्र पारितंत्र में उलटी अवस्था में होता है।false
- 3सदेव उलटी अवस्था में होता है।false
- 4उलटी या खड़ी दोनों अवस्था में हो सकता।false
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उत्तर : 1. "सदैव खड़ी अवस्था में होता है । "
प्र: Pointing to a photograph, a man said, "I have no brother or sister but that man’s father is my father’s son." Whose photograph was it? 2073 05b5cc76ae4d2b4197774fe5b
5b5cc76ae4d2b4197774fe5b- 1His uncle'sfalse
- 2His nephew'sfalse
- 3His son'strue
- 4His Cousin'sfalse
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उत्तर : 3. "His son's"
व्याख्या :
Answer: C) His son's Explanation: Since the narrator has no brother, his father’s son is he himself. So, the man who is talking is the father of the man in the photograph. Thus, the man in the photograph is his son.
प्र:Read the passage carefully and give the answer of following questions.
A glass bottle that is sent to a landfill can take up to a million years to break down. By contrast, it takes as little as 30 days for a recycled glass bottle to leave your kitchen recycling bin and appear on a store shelf as a new glass container. Glass container are 100 percent recyclable, which means they can be recyclable repeatedly, again and again, with no loss of purify or quality in the glass. Recovered glass from glass recycling is the primary ingredient in all new glass containers. A typical glass container is made of as much as 70 percent recycled glass. According to industry estimates, 80 percent of all recycled glass eventually ends up as new glass containers. Every ton of glass that is recycled save more than a ton of the raw materials needed to create new glass, including 13,00 pounds of sand, 410 pounds of soda ash, and 380 pounds of limestone.
Because glass is made from natural materials such as sand and limestones, glass containers have a low rate of chemical interaction with their contents. As a result, glass can be safety reused.
Besides serving as the primary ingredient in new glass containers, recycled glass also has many other commercial uses-from creating decorative tiles and landscaping materials to rebuilding eroded beaches.
People don’t mind using recycled glass as it_
2073 05f3a147be2e6e42e42b76c7a
5f3a147be2e6e42e42b76c7aA glass bottle that is sent to a landfill can take up to a million years to break down. By contrast, it takes as little as 30 days for a recycled glass bottle to leave your kitchen recycling bin and appear on a store shelf as a new glass container. Glass container are 100 percent recyclable, which means they can be recyclable repeatedly, again and again, with no loss of purify or quality in the glass. Recovered glass from glass recycling is the primary ingredient in all new glass containers. A typical glass container is made of as much as 70 percent recycled glass. According to industry estimates, 80 percent of all recycled glass eventually ends up as new glass containers. Every ton of glass that is recycled save more than a ton of the raw materials needed to create new glass, including 13,00 pounds of sand, 410 pounds of soda ash, and 380 pounds of limestone.
Because glass is made from natural materials such as sand and limestones, glass containers have a low rate of chemical interaction with their contents. As a result, glass can be safety reused.
Besides serving as the primary ingredient in new glass containers, recycled glass also has many other commercial uses-from creating decorative tiles and landscaping materials to rebuilding eroded beaches.
- 1has high rate of chemical reactionfalse
- 2is made from natural materialstrue
- 3helps create landscaping materialsfalse
- 4retains its purity or quality to a large extentfalse
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उत्तर : 2. "is made from natural materials"
प्र: जमीन पर स्थित दो बिंदुओं से खंभे के उच्च बिंदुओं के उन्नयन कोण एक - दूसरे के पूरक हैं । यदि पहले बिंदु तथा दूसरे बिंदु की खंभे के पाद से दूरियां क्रमशः 9 मी. तथा 16 मी . हैं । खंभे की ऊँचाई ज्ञात करें ।
2073 05dcbd69645ad6b59c82e67ac
5dcbd69645ad6b59c82e67ac- 15 mfalse
- 210 mfalse
- 39 mfalse
- 412 mtrue
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उत्तर : 4. "12 m "
प्र: किन राष्ट्रिय नेता को लोकहितवादी कहा गया है ?
2073 05f4f16ed2496f971f929c8e5
5f4f16ed2496f971f929c8e5- 1गोपालहरी देशमुखtrue
- 2लाला लाजपत रायfalse
- 3मोतीलाल नेहरूfalse
- 4महात्मा गांधीfalse
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उत्तर : 1. "गोपालहरी देशमुख"
प्र: what is the gram formula mass of NH43PO4? 2073 05b5cc670e4d2b4197774c039
5b5cc670e4d2b4197774c039- 1139.54false
- 2140.70false
- 3149.08true
- 4153.24false
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उत्तर : 3. "149.08"
व्याख्या :
Answer: C) 149.08 Explanation: The gram formula mass is nothing but molar mass. Composition : Symbol Element Atomic weight Atoms P Phosphorus 30.973762 1 = 30.973 O Oxygen 15.9994 4 = 63.998 N Nitrogen 14.0067 3 = 42.020 H Hydrogen 1.00794 12 = 12.096 Total = 30.973+63.998+42.020+12.096 = 149.087
प्र:In each of the following sentences, there is a blank space. Below each sentence,there are five words out of which one can be used to fill the blank to make the sentence grammatically and coherently correct. Find the most appropriate word that fit into the blank contextually.
The government believes that the present slowdown, marked by five ____________ quarters of dropping growth, is merely a cyclical one.
2073 05deb1952de793124fa228d02
5deb1952de793124fa228d02- 1luxuriousfalse
- 2successfulfalse
- 3crampedfalse
- 4consecutivetrue
- 5spaciousfalse
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उत्तर : 4. "consecutive"
प्र: What is a mixture of potassium nitrate powdered charcoal and sulphur called? 2073 05c2dbd92bc106c237a22c18a
5c2dbd92bc106c237a22c18a- 1paintfalse
- 2aluminiumfalse
- 3brassfalse
- 4gun powdertrue
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