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Q. What do you mean by Mixtures of Matter?
A mixture is a mixture of two or more pure substances in which each substance retains its individual properties. Concrete mainly rocks most metal objects all food and the air you breathe are mixtures that are frequently composed of many different substances and the composition of a mixture is variable. For instance the composition of salt water can be varied by changing the amount of salt or water in the mixture.
hybridization in hydroxyl group
The electronic configuration of an element with atomic number 7 i.e. nitrogen atom is; (1) 1s 2 , 2s 1 , 2p 3 x (2) 1s 2 , 2s 2 , 2p 2 x ,
The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is: (1) 17 (2) 37 (3)2 (4)38 Ans: 17
A sample of gas occupies 10l under a pressure of 1atm. what will be its volume if the pressure is increased to 2atm ? assuming that temperature of the gas sample does not change
what do you mean by homologous series .
Problem 1: Describe TDM and mention its clinical significance in clinical practice. Definition of TDM Show the importance of TDM and its clinical significance in clini
Q. Write short notes on fabrication of rubber objects. Sol. Fabrication of Rubber: in the row condition rubber is composed of molecules of great length and molecular weight.
the set of numerical coefficients in the equation K2CrO4+HCl=K2Cr2O7+KCl is
notes
What will be the mole fraction of 98% pure H2SO4 in 1 liter solution which has density 1.85gm/ml at ntp?
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