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Diagonal Relationship between Beryllium and Aluminium || Relation between Beryllium and Aluminium

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  Diagonal Relationship between Beryllium and Aluminium The ionic radius of Beryllium (Be 2+) is estimated to be nearly 31 pm; the charge/radius ratio Or e/m ratio is nearly the same as that of the Al 3+ ion. Hence beryllium resembles aluminium in these ways. Some of the similarities are given below: » Like Aluminium, Beryllium(be) is not readily attacked by acids H+ donor because of the formation of an oxide film on the surface of the metal by reacting with oxygen, i.e. they are rendered passive by nitric acid. » Beryllium hydroxide[[Be(OH)4]2] dissolves in excess of alkali to give a beryllate ion, [ Be(OH)4]2– just as aluminium hydroxide[Al(OH)3] gives aluminate ion, [Al(OH)4] » The chlorides of metals beryllium and aluminium have Cl– bridged chloride structure in vapour phase. Both the chlorides are soluble in organic solvents and are strong as Lewis acids They are used as Friedel Craft catalysts. » Beryllium(Be) and aluminium(Al) ions have strong tendency to form complexes, (Be...
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Math question

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A tower, x metre, has a flagstaff at its top. The tower and flagstaff subtends equal angles at a point distant y metre from the foot of the tower. Then find the length of the flagstaff ( in metre). 
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Computer science Solutions term 1 || Objective Type Questions MCQS || Objective Answers Class 12 Solution || Computer Science ||

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1 . A function in Python begins with which keyword? (a) void (b) return (c) int (d) def Ans : (d) def 2 . Name the statement that sends back a value from a function. (a) print (b) input (c) return (d) None Ans : (c) return 3 . Functions that do not return any value are known as: (a) fruitful functions (b) void functions (c) library functions (d) user-defined functions Ans : (b) void functions 4 . A variable created or defined within a function body is classified as: (a) local (b) global (c) built-in (d) instance Ans : (a) local 5 . Which of the following arguments works with implicit values that are used if no value is provided? (a) keyword (b) required (c) variable-length (d) default Ans : (d) default 6 . Which values are used by the functions to communicate information back to the caller? (a) local (b) global (c) return (d) random Ans : (c) return 7 . What is the output of the program given below? x = 50 def func (x) :  x = 2 func (x) print ('x is now', x) (a) x is now 50 (b)...
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Electric Current

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  Electric current is a fundamental concept in physics and electrical engineering. Here are some key notes about electric current: Definition : Electric current is the flow of electric charge through a conductor. It is measured in amperes (A) and is represented by the symbol "I." Charge Carriers : In most conductors, electric current is carried by electrons. Electrons have a negative charge and move from the negatively charged terminal (cathode) to the positively charged terminal (anode) in a circuit. Direction of Current : Conventional current flow is defined as the direction of positive charge flow, which is opposite to the actual electron flow. So, in most circuits, electric current is considered to flow from the positive terminal to the negative terminal. Types of Current : There are two primary types of electric current: Direct Current (DC) : In DC, the flow of electric charge is in one direction, and it does not change with time. Batteries and solar cells are common sou...
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