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What is the ratio of octahedral holes to the numbe...
1.
What is the ratio of octahedral holes to the number of anions in hexagonal closed packed structure?
Answer» Correct Answer - `1:`
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Read the first activity ,read the extract and then do the all the activites : We were an agrarian people . And my main hoddy in my early teens was to wander through paddy fields to see the different kinds of birds and how they nest. On the se had been many coconut trees and blacks palm trees. Beautifully crafted nests of the weaver-birds - thoookkanaam kuruvikal - would be seen dangling from the ends of plam leaves. Hunderds fo these little birds would land on the the paddy to squeeze the milk form the tender rice. They would come to the field when the young stalks come out of the rice-plants. At this stage of the paddy, my father would send me to our filed with a tin drum to scare these little birds balancing on the tender stalks and squeezing the milk their sharp beaks and fly aways with the stalks dangling in their beaks. I have alawys liked to see this sights also. The nests of parrots were crafted holes in the trunks of plam trees. I continued to wonder how they made these holes on the hard trunks until I saw the patient work of the woodpeckers. They were the carpenters and their longs, sharp and strong beaks, chisels. They make the holes ( in search of worns inside the weak spots of the trunks) and the parrots occupy them . If I heard the sound tak, tak , tak I knew it was a woodpecker chiselling a hrad trunks. I would go after him . It seems that the woodpecker is the only bird which can walk perpendiculary on the tree trunks! How beautiful the sight was ! Its strong legs, red crest, the dark red stripe on the face and black beak and the tak, tak, tak, sound used to captivate me . Grammar (Do as directed) : When earthquake strikes , world trembles. (Insert appropriate articles, wherever necessary and rewrtie it .)
Read the first activity ,read the extract and then do the all the activites : We were an agrarian people . And my main hoddy in my early teens was to wander through paddy fields to see the different kinds of birds and how they nest. On the se had been many coconut trees and blacks palm trees. Beautifully crafted nests of the weaver-birds - thoookkanaam kuruvikal - would be seen dangling from the ends of plam leaves. Hunderds fo these little birds would land on the the paddy to squeeze the milk form the tender rice. They would come to the field when the young stalks come out of the rice-plants. At this stage of the paddy, my father would send me to our filed with a tin drum to scare these little birds balancing on the tender stalks and squeezing the milk their sharp beaks and fly aways with the stalks dangling in their beaks. I have alawys liked to see this sights also. The nests of parrots were crafted holes in the trunks of plam trees. I continued to wonder how they made these holes on the hard trunks until I saw the patient work of the woodpeckers. They were the carpenters and their longs, sharp and strong beaks, chisels. They make the holes ( in search of worns inside the weak spots of the trunks) and the parrots occupy them . If I heard the sound tak, tak , tak I knew it was a woodpecker chiselling a hrad trunks. I would go after him . It seems that the woodpecker is the only bird which can walk perpendiculary on the tree trunks! How beautiful the sight was ! Its strong legs, red crest, the dark red stripe on the face and black beak and the tak, tak, tak, sound used to captivate me . Grammar (Do as directed) : I spent my hoilding ………… some friends………..a wooden house. (Fill in the blanks with appropiate prepositions.)
Write the molecular formula of novestrol.
Explain the position of actinoids in the periodic table. What is the action of sulphur on lanthanoids ? Calculate the magnetic moment of divalent ion in aqueous solution it its atomic number is 24.
Have you ever wondered why soliders are always lad in green ? This is to enable them to camouflaging themselves during wartime . Hiding in the jungles, their green attire blend into the surrounding trees and shrubs making it difficult for the enemies to spot them. Long before man made use of camouflaging , insects have already adopted the tactic of disguise to escape from the clutches of their predators. By having body colour close to those of the rocks and dried leaves, they can escape from being pursued by the predators. Butterflies and moths have developed a variety of camouflage strategies since they are quite defenceless and their predators are abundant. Possessing wings which resemble dried leaves help certain butterflies and months to hide among heaps of dried leaves when predators are around. Fortunately, not all insects choose the art of disguise to escape from their predators, otherwise , the world would be so dull and colourless. There are insects which assimilate the bright body colours of bees and wasps to escape from being pursued by their predators. Long ago birds have already learnt to avoid brilliantly coloured wasps and bees in fear of their painful stings. Hence , over millions of years, many harmless insects have assimilated the bees and wasps by imitating their bright body colours and shapes. In this way, they appear dangerous and hence ward them off. The beefly not only appears like the bumblebee in terms of body colour, even its hums sound similar too. The only difference is that the beefly does not have a sting and is hence harmless. The hovertly is another insect which imitates the body colours of the wasps. Their bodies are striped yellow and black. The only deviations are that hoverflies do not have stings, and they have only one pair of wings each while wasps have two pairs each. These variations are hardly noticed by the predators and hence help them to escape. Vocabulary: Find the words from the passage for: (i) animal or bird that hunts other for food. (ii) to get free from danger. (iii) to prevent something from harming . (iv) to make a copy.
Enantiomers are
grignard reagent
Have you ever wondered why soliders are always lad in green ? This is to enable them to camouflaging themselves during wartime . Hiding in the jungles, their green attire blend into the surrounding trees and shrubs making it difficult for the enemies to spot them. Long before man made use of camouflaging , insects have already adopted the tactic of disguise to escape from the clutches of their predators. By having body colour close to those of the rocks and dried leaves, they can escape from being pursued by the predators. Butterflies and moths have developed a variety of camouflage strategies since they are quite defenceless and their predators are abundant. Possessing wings which resemble dried leaves help certain butterflies and months to hide among heaps of dried leaves when predators are around. Fortunately, not all insects choose the art of disguise to escape from their predators, otherwise , the world would be so dull and colourless. There are insects which assimilate the bright body colours of bees and wasps to escape from being pursued by their predators. Long ago birds have already learnt to avoid brilliantly coloured wasps and bees in fear of their painful stings. Hence , over millions of years, many harmless insects have assimilated the bees and wasps by imitating their bright body colours and shapes. In this way, they appear dangerous and hence ward them off. The beefly not only appears like the bumblebee in terms of body colour, even its hums sound similar too. The only difference is that the beefly does not have a sting and is hence harmless. The hovertly is another insect which imitates the body colours of the wasps. Their bodies are striped yellow and black. The only deviations are that hoverflies do not have stings, and they have only one pair of wings each while wasps have two pairs each. These variations are hardly noticed by the predators and hence help them to escape. Summary : Summarise the above extract with the help of the points given and suggest a suitable title. Camouflage of soldiers and insects-reason and ways for disguising-assimilation of insects-need of imitation.
Have you ever wondered why soliders are always lad in green ? This is to enable them to camouflaging themselves during wartime . Hiding in the jungles, their green attire blend into the surrounding trees and shrubs making it difficult for the enemies to spot them. Long before man made use of camouflaging , insects have already adopted the tactic of disguise to escape from the clutches of their predators. By having body colour close to those of the rocks and dried leaves, they can escape from being pursued by the predators. Butterflies and moths have developed a variety of camouflage strategies since they are quite defenceless and their predators are abundant. Possessing wings which resemble dried leaves help certain butterflies and months to hide among heaps of dried leaves when predators are around. Fortunately, not all insects choose the art of disguise to escape from their predators, otherwise , the world would be so dull and colourless. There are insects which assimilate the bright body colours of bees and wasps to escape from being pursued by their predators. Long ago birds have already learnt to avoid brilliantly coloured wasps and bees in fear of their painful stings. Hence , over millions of years, many harmless insects have assimilated the bees and wasps by imitating their bright body colours and shapes. In this way, they appear dangerous and hence ward them off. The beefly not only appears like the bumblebee in terms of body colour, even its hums sound similar too. The only difference is that the beefly does not have a sting and is hence harmless. The hovertly is another insect which imitates the body colours of the wasps. Their bodies are striped yellow and black. The only deviations are that hoverflies do not have stings, and they have only one pair of wings each while wasps have two pairs each. These variations are hardly noticed by the predators and hence help them to escape. Grammar : Rewrite the following sentences in the ways instructed : Insects have already adopted the tactic of disguise to escape from the clutches of their predators· (Replace infinitive with gerund and rewrite .)
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