Please select a subject first
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Answer the following.
Distinguish between thermosetting and thermoplastic resins. Write example of both the classes.
Concept: undefined >> undefined
Answer the following
How is polythene manufactured? Give their properties and uses.
Concept: undefined >> undefined
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Attempt the following:
Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.
\[\begin{array}{cc}\ce{- (CH2 - CH -)_\text{n}}\\
\phantom{.....}|\\\ce{\phantom{.......}CN}\end{array}\]
Concept: undefined >> undefined
Attempt the following:
Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.
\[\begin{array}{cc}
\ce{-(CH2 - CH2 - CH - CH2 - CH2)_\text{n}}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\end{array}\]
Concept: undefined >> undefined
Attempt the following:
Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.
Concept: undefined >> undefined
Answer the following.
Explain in detail free radical mechanism involved during preparation of addition polymer.
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Answer the following in one or two sentences.
For the reaction,
\[\ce{CH3Br_{(aq)} + OH^-_{ (aq)} -> CH3OH^-_{ (aq)} + Br^-_{ (aq)}}\], rate law is rate = k`["CH"_3"Br"]["OH"^-]`
What is the change in rate if concentrations of both reactants are doubled?
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What are the types of ligands? Give one example of each type.
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Amongst the following, the ambidentate ligand is ____________
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Write one example of each of bidentate and ambidentate ligand.
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The following types of solids contain molecules as constituent particles?
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Which of the following is an amorphous solid?
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A compound is made up of two elements X and Y and crystallizes in bcc structure. Atoms of X are present at the corners of the cube. Atoms of Y are present at the centre of the cube. The formula of the compound is ______.
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Sodium crystallizes in bcc structure. If the edge length of unit cell is 4.3 × 10-8 cm, the radius of Na atom is ______.
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Classify the following solid:
Pb
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A compound crystallizes in bcc structure. What is unit cell edge length if diameter of its atom is 120 pm?
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In a carbinol system of nomenclature tert.butyl alcohol is named as _______________
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In a carbinol system of nomenclature tert.butyl alcohol is named as _______________
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In a carbinol system of nomenclature tert.butyl alcohol is named as _______________
Concept: undefined >> undefined
Why do phenols give deep coloration with neutral ferric chloride?
Concept: undefined >> undefined
