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What are liquid crystals? Give examples.
Liquid crystals are an intermediate state among liquid state and solid state. They exhibit some characteristic properties of both solids and liquids. The liquid crystal state has ?ow properties like ordinary liquids and they show anisotropy and double refraction just such as crystalline solids. Examples are Cholesteryl acetate and cholesteryl benzoate
Number of unpaired electrons in Mn 4+ is: (1) 3 (2) 5 (3) 6 (4) 4 Ans: 3
Ask questionfreezing point as exemple of colligative propertiy. #Minimum 100 words accepted#
compound reacts with oxygen to form 2 oxide x and y. or analysis 1.535g of x yielded 1.365g of copper and 1.545g of y yielded 1.6 a.determine the chemical compound of x and y.b .
Give example of Allotropy The element carbon has two common allotropes: diamond, where the carbon atoms are bonded together in a tetrahedral lattice arrangement, and graphite
What is the advantage of using a flame photometer instrument designed to operate with an internal standard ?
What are the 5 Factors that affects crystallization of organic compounds?
Applications of Photochemistry
Q. Consider a hypothetical system in which two aqueous solutions are separated by a semiper- meable membrane. Solution ? is prepared by dissolving 1.00 x 10 -5 mol KCl in 10.0 g
Why a covalent bond is directional? Covalent bond is formed as a result of pairing of two electrons in atomic orbitals of two atoms. Bond then must lie along the direction of
Need to know about atomic mass of clorine
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