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Why lead and mercury are in 1st and 2nd group of basic radicals
atoms combine to form molecule because they tend to
Optical glass: They contain phosphorous as replacement for most of all the silica and lead silicate, containing a little CaO 2 , the latter is capable of absorbing ultraviolet lig
While studying evolution, a student comes across a cladogram that includes clades like amphibia, reptilia, aves, and mammalia. What must be the basal clade?
A cricket ball of 0.5 kg is moving with a velocity of 100 m/ sec . The wavelength associated with its motion is: (1) 1/ 100cm (2) 6.6 x10 -34 m
Explain detergents? Give their scheme classification. Why are the detergents preferred over soaps?
construction and working of secondary cell
For an electron if the uncertainty in velocity is Δ v , the uncertainty in its position( Δ x ) is given by: (1) hm/ 4 Π Δ b (2) 4 Π / hm Π v
Q. What are the Chemical Properties of Halogens? Ans. he halogens have 7 valence electrons in their outermost shell. Note that 7 is one electron short of the octet.
Q. Determine mass of an electron? Ans. Three years later after J.J Thomson discovered the electron, the American scientist Robert Millikan used an oil drop experiment to accu
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