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Q. Ca +2 = 20 ppm, Mg +2 = 25 ppm, CO 2 = 30 ppm, HCO - 3 = 150, K + = 10 ppm. Calculate the lime (87% pure) and soda (91% pure) required softening 1 million litt
explain the principle of EDTA method
Q. Show the properties of Tetrahydrido borate? Tetrahydrido borate anion BH - 4 has a tetrahedral structure which can be explained on the basis of sp 3 hybridisation of boron
Atoms consists of protons, neutrons and electrons. If the mass of neutrons and electrons were made half and two times respectively to their actual masses, then the atomic mass of
#vescosity and viscosity index
The frequency corresponding to transition n= 2 to n =1 in hydrogen atom is: (1) 15.66 x 10 10 Hz (2) 24.66 x 10 14 Hz (3) 30.5
give an clear explanation about kohlrauschs law
how to detect nickel radical in presence of Ferro cyanide radical.
Why secondary and tertiary amine doesn''t give carbylamine reaction
Classification of polymers - Elastomers The polymers which have elastic character such as rubber (a material that can return to its unique shape after stretching is said to be
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