Important English Grammar Rules 2 for all SSC Exams By Nikhil sir

Sentence : Type & Parts || Day 1 || Class 10 English Grammar || UP Board Exam 2022

Figure shows the roller coaster track. Each car will start from rest at point A and will roll with negligible friciton. It is important that there should be at least some small positive normal force exerted by the track on the car at all points, otherwise the car would leave the track. With the above fact, the minimum safe value for the radius of curvature at point B is (g=10m//s^(2) :

Figure shows the roller coaster track. Each car will start from rest at point A and will roll with negligible friciton. It is important that there should be at least some small positive normal force exerted by the track on the car at all points, otherwise the car would leave the track. With the above fact, the minimum safe value for the radius of curvature at point B is (g=10m//s^(2) :

Coordination compounds plays many important roles in animals and plants. The are essential in the storage and transport of oxygen as electrons transfer agents as catalysts and in photosynthesis Wide range of application in daily life takes place through formation of complexes Photographic fixing qualitative and quantitative analysis purification of water metallurgical extraction are some specific worth mentioning The complex [Fe(H_(2)O)_(5)NO]^(2+) is formed in the brown ring test for nitrates when freshly prepared FeSO_(4) soultion is added to aqueous solution of NO_(3)^(Θ) followed by addition of conc. H_(2)SO_(4) Select correct statement about this complex (a) Colour change is due to charge transfer (b) It has iron in +1 oxidation state and nitrosyl as NO^(o+) (c ) It has magnetic moment of 3.87BM confirming three unpaired electrons in Fe (a) All the above are correct statements .

Assertion: Synonyms are the most important of all rules of ICBN. Reason: Out of the two or more scientific names given to the organism, the oldest name is recognized as valid name and other names as synonyms

A binary operation * is defined on the set R of all real numbers by the rule a*b= sqrt(a^2+b^2) for all a ,\ b in R . Write the identity element for * on Rdot

Write the identity element for the binary operations * on the set R_0 of all non-zero real numbers by the rule a * b=(a b)/2 for all a ,\ b in R_0

Molecular orbitals are formed by the overlap of atomic orbitals. Two atomic orbitals combine atom from two molecular orbitals called vonding molecular orbital (BOM) and anti bonding molecular orbital (ABMO). Energy of anti bonding orbital is raised above the parent atomic orbitals that have combined and the energy of the bonding orbital is lowered than the parent atomic orbitals. Energies of various molecular orbitals for elements hydrogen to nitrogne increase in the order : sigma_(1s)ltsigma_(1s)^(**)ltsigma_(2s)ltsigma_(2s)^(**)lt(pi_(2py)~~pi_(2py))lt sigma_(2py)lt(pi_(2py)^(**)~~pi_(2py)^(**))ltsigma_(2pz)^(**) and for ozygen and fluorine order of energy of molecular orbitals id given below : sigma_(1s)ltsigma_(1s)^(**)ltsigma_(2s)ltsigma_(2s)^(**)ltsigma_(2pz)lt(pi _(2px)^(**)~~pi_(2py)^(**))sigma_(2pz)^(**) Different atomic orbitals of one atom combine wiht the atomic orbitals of the second atom whihc have comparable energies and proper orientation. Further, if the overlapping is head on, the molecular orbital is called 'Sigma' (sigma) and if the overlap is atreal, the molecular orbital is called 'pi', (pi). The molecular orbitals are filled with electrons according to the same rules as followed for filling of atomic orbitals. However, the order for filling is not the same for all molecules or their ions, Bond order is one the most ipmrtaint parameters to compare the strength of bonds. Which of the following pair is expected to have the same bond order ?