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The charge on the atom containing 17 protons, 18 neutrons and 18 electrons is:
(1) +1
(2) -2
(3) -1
(4)Zero
Ans: -1
Filter A plant pot with a plug of cotton wool in the bottom and a layer of sand little inches deep makes a satisfactory filter for more purposes
The molecule having one unpaired electron is: (1) NO (2) CO (3) CN - (4) Fe Ans: NO
define scale and sludge
,Potassium-42 is a radioisotope that nutritionists use to determine whether the body is effectively using potassium at the cellular level. The half-life of potassium-42 is 12.4 hou
The high melting point and insolubility in organic solvents of sulphanilic acid are due to its ...... structure: (1) Simple ionic (2) Bipolar
Ethelene+diaminotetraacetate---->1,4- diaminobutane from ethylene CH 2 =CH 2 +EDTA---->NH 2 -CH 2 -CH 2 -CH 2 -CH 2 -NH 2
#between p-amino aniline &p-methyl aniline which is more basic?
Q. What is basic diffrence between heat and temperature? Ans. Heat is energy which flows from hot objects to cooler ones. It flows because of the temperature difference betw
explain in long answer LAW OF CHEMICAL COMBINATION
Show that wavefunction ψ1(x) = (2/L) 1/2 sin(πx/L) of a particle in a box is an eigenfunction of the operator d 2 /dx 2 and also calculate the corresponding eigenvalue.
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