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In BC = 4.5 cm, AB - AC = 1.6 cm (1) Draw BC = 4.5 cm. (2) At B make an (3) On BX cut off BD = 1.6 cm join DC. (4) Draw perpendicular bisector of DC to cut BX at A. (5) Join AC The..

Row Matrix - A matrix having only one row is called a row-matrix. For example: A[1 3 2 -2] is a row matrix of order 1 x..

S= {1,2,3,4,5,6}] If the event is set of elements less than 2, then E = {1} is a simple event 1) Simple Event: If an event has one element of the sample space then it is called a simple or elementary eve..

On the basis of electronic configuration, the elements of the periodic table are classified into: (1) Noble gases, (2) Normal elements, (3) Transition elements, (4) Inner-transition elements, (5) Alkali metals and (6) Halogen..

Catalytic reactions are classified as homogeneous catalysis or heterogeneous catalysis. When a catalyst mixes homogenously with the reactants and forms a single phase it is called a homogenous catalyst. When a catalyst exists in a different phase from that of the reactants it is called a heterogen..

121x 2 - 25y 2 = (11x) 2 - (5y) 2 = (11x + 5y) (11x - 5y) [Using the identity a 2 -b 2 =(a-b)(a+b)] Factorise: (5a + 6b) 2 - 49b 2 Let x = 5a + 6b Then the given expression = (x) 2 - (7b) 2h..

A box contains four types of pens: type1, type2, type3 and type4. The number of pens in each type is shown in the bar graph. Find the number of pens of type3 in that box. => 7 or 8 or 10 or 12..

The most popular hybridisation in carbon containing compounds are sp, sp 2 and sp 3..

The most popular hybridisation in carbon containing compounds are sp, sp 2 and sp 3..

Environment of earth includes the whole of atmosphere, hydrosphere as related to biosphere. Therefore, environment includes nature, composition of air, characters of hydrological parameters, sunshine, air pressure, temperature, water resources - their storage and flow and all other physical paramet..