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CURRENT AFFAIRS || 11 March 2023

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                     CURRENT AFFAIRS                     11 March 2023 1. Colonel Geeta Rana of the Corps of Electronics and Mechanical Engineers has taken over co mmand of an independent field workshop in the Eastern Ladakh region with China after the I ndian Army. 2. Arun Subramanian, an attorney, has been appointed as the first Indian American judge of the M anhattan Federal District Court in New York. 3. Union Housing and Urban Affairs Minister Hardeep Singh Puri launched ‘Swachhotsav’, a three- w eek women-led swachhata campaign under the Swachh Bharat Mission (Urban). 4. The Indian Navy has received the first fully indigenized fuze YDB-60 for the underwater anti- submarine warfare rocket RGB-60. 5. The Indian Navy’s exercise, called the “Theatre Level Operational Readiness Exercise for 2023” (TROPEX-23), culminated in the Arabian Sea after running for four months from November 2022 to March 2023. 6. The United States and India will sign an MoU on semiconductors as both countr
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Current Affairs 10 March 2023

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                    CURRENT AFFAIRS                     10 March 2023 1. The Attukal Pongala festival that returned after three Covid-hit years was celebrated in all its glory this year. 2. Yuva Utsava-India@2047 launched by Anurag Singh Thakur, Union Minister for Youth Affairs, Sports, Information, and Broadcasting, from IIT Ropar in Punjab. 3. Union Minister of State for Information and Broadcasting Dr L. Murugan presented the 8th National Photography awards in New Delhi. 4. NISAR, an Earth-observation satellite, is a joint mission by the National Aeronautics and Space Administration (NASA) and the Indian Space Research Organisation (ISRO). 5. Qatar’s Amir Sheikh Tamim bin Hamad Al Thani has appointed Foreign Minister Sheikh Mohammed bin Abdulrahman Al-Thani as the country’s new prime minister. 6. Group Captain Shaliza Dhami has been selected to take over the command of a frontline combat unit in the Western sector. 7. RBI governor Shaktikanta Das said payments through UPI have grow
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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, (BeF4)2
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KVS CBSE Worksheets CHAPTER 1 Electric Charges and Fields Class 12

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                      SECTION A CONCEPTUAL AND APPLICATION TYPE QUESTIONS  1 Is the force acting between two point charges q1 and q2 kept at some distance apart in air attractive or repulsive when i) q1 q2 > 0 ii) q1 q2 < 0 ? 1 (2007)  2 If the distance between two equal point charges is doubled and their individual charges are also doubled ,what would happen to the force between them ? 1(2014)  3 Do the electrostatic field lines form closed loops? 1(2014)  4 A hollow metal sphere of radius 5cm is charged such that the potential on its is 10V. What is the electric field at the center of the sphere? 1(2011)  5 What is meant by the statement that   “the electric field of a point charge has spherical symmetry whereas electric field due to an electric dipole is cylindrically symmetrical’’ ? 1(1996)  6 Why is it difficult to perform electrostatic experiments on a humid day? 1  7 The distance of the field point on the equatorial plane of a small electric dipole , is halved. By wha
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S-Block Elements || S-block element class 11 chapter 8 || Group 1A, 2A elements || S block elements chapter 8 notes class 11 || Chemistry ||

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                    INTRODUCTION : The s- block elements of the periodic table are those in which the last electron enters  into the outermost s-orbital. As the s-orbital can accommodate only two electrons, in two group (1 & 2) belong to the s-block of the periodic table. Group 1 of the periodic table consists of the elements : lithium (L i), sodium (Na), potassium (K), rubidium (R b), caesium (C s) and francium (F r). They are collectively known as alkali metals. These are called because they forms hydroxides on reaction with water which are strongly alkaline in nature. The elements of Group 2nd include beryllium (Be), magnesium (Mg), calcium (C a), strontium (S r), barium (B a) and radium (Ra). These elements with the exception of Beryllium are commonly known as the alkaline earth metals. These are so called because their oxide and hydroxide are alkaline in nature and these metal oxides are found in the earth’s crust . The general electronic configuration of s- block element is
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Kinematics Important Questions Of Physics

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Ques 1. Mention the condition when an object is in motion (a) can be considered point object (b) can not be considered point object.  Ans . An object can be considered as a point object if (a) its size is negligible in comparison to the distance travelled by object (b) it's size is not negligible in comparison to the distance travelled by object. Ques 2 . Can Earth be regarded as a point object when it is describing its really journey around the sun? Ans.  Yes, because the diameter of earth is very small as compared to the radius of the orbital path of earth around the sun.   Ques 3. Can the speed of a body be negative?   Ans . No, because the speed of an object is the distance travelled by the by object in unit time and distance can never be negative. Ques 4. which speed is measured by the speedometer of your scooter?  Ans . The Speedometer measure the instantaneous speed of the scooter at a given instant of time. Ques 5.What does the slope of position time 
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QUANTUM NUMBERS (Principal, Azimuthal, Magnetic and Spin)

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                  QUANTUM NUMBERS  Orbitals represent regions in the space around the nucleus where the probability of finding the electron is maximum. A large number of electron orbitals are possible in atom. These can be distinguished by their size, shape and orientation of the orbitals. To describe each electron in an atom in different orbitals, we need a set of three numbers known as quantum numbers. These are designated as n, l and m. In addition to these three numbers another quantum number is also needed which specifies the spin of the electron. These four numbers are called quantum numbers. These are discussed below: 1. Principal quantum number (n) :  This quantum number determines the main energy shell or level in which the electron is present. It is denoted by n. It can have whole number values starting from 1 such as n = 1, 2, 3, 4 ... This quantum number also identifies as shell. The shell with n 1 is called the first shell. The shell with n 2 is called the second shell and
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