The tincture of iodine means iodine dissolved in
ethanol
bromine chloride
chlorine water
water
Correct answer is A
It is also called weak iodine solution. Tincture solutions are characterized by the presence of alcohol.
Aluminium hydroxide is used in the dyeing industry as a
dye
dispersant
salt
mordant
Correct answer is D
Aluminium hydroxide is used in the dyeing industry as a mordant. It combines with a dye and thereby fixes it in a material.
elliptical
spiral
circular
spherical
Correct answer is D
The shape of the S-orbital is spherical.
The constituent common to duralumin and alnico is
Co
Mn
Al
Mg
Correct answer is C
Constituents of duralumin are: Al, Cu, Mg, Mn.
Constituents of Alnico are: Al, Ni and Co
In 1909, the alloy of duralumin was discovered by Alfred Wilon consisting of 94% Al, 4% Cu, 1% Mg and 1% Mn(Manganese)
Alnico is an acronym referring to a family of iron alloys which in addition to iron are composed primarily of Al, Ni and Co.
The general formula of alkanones is
RCHO
RCOR'
RCOOH
RCOOR
Correct answer is B
Alkanones also known as ketones have the general formula RCOR'
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