Question 11 Mark
Name a compound which can be purified by sublimation process.
Answer
View full question & answer→Naplthalene.
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Question 21 Mark
Give the formula of Prussian blue.
Answer
View full question & answer→$Fe _4\left[ Fe ( CN )_6\right]_3$
Question 31 Mark
The mixture of acetone and ethyl alcohol is separated by which method while their boiling points are $56^{\circ} C$ and $78.3^{\circ} C$ respectively?
Answer
View full question & answer→By fractional distillation.
Question 41 Mark
Which type of electromeric effect is in $C _2{ }^{-}$ $C _3$ bond in compound $CH _3- CH = CH - CH _2 CH _3$ ?
View full question & answer→Question 51 Mark
Which effect is have more strengthinductive effect or electromeric effect?
Answer
View full question & answer→The electromeric effect and inductive effect both work in opposite direction then electromeric effect have more strength.
Question 61 Mark
Arrange the following carbanions in increasing order of their stability.
$: \overline{C} H_3,\left(CH_3\right)_2 \overline{C} H:, CH_3-\overline{C} H_2:,\left(CH_3\right)_3 \overline{C}:$
$: \overline{C} H_3,\left(CH_3\right)_2 \overline{C} H:, CH_3-\overline{C} H_2:,\left(CH_3\right)_3 \overline{C}:$
Answer
View full question & answer→$\left( CH _3\right)_3 \overline{ C }:<\left( CH _3\right)_2 \overline{ C } H :< CH _3-\overline{ C } H _2:<: \overline{ C } H _3$
Question 71 Mark
What is the shape of $\stackrel{+}{ C } H _3$ ?
Answer
View full question & answer→Trigonal planar.
Question 81 Mark
Write the increasing order of $+I$ effect of following alkyl groups :
Methyl, ethyl, t-butyl, isopropyl
View full question & answer→Methyl, ethyl, t-butyl, isopropyl
Question 91 Mark
Arrange the following in decreasing order of - I effect.
$-CN, Cl,-NO_2,-COOH,-OH$
$-CN, Cl,-NO_2,-COOH,-OH$
Answer
View full question & answer→$- NO _2>- CN >- COOH > Cl > OH$
Question 101 Mark
Give examples of secondary carbocation.
Answer
View full question & answer→Isopropyl carbocation is a secondary carbocation.
Question 111 Mark
Give name of two neutral nucleophile.
Answer
View full question & answer→$\ddot{ N } H _3, H _2 \ddot{ O }:$
Question 121 Mark
Give two functional group isomers formed by molecular formula $C _2 H _3 N$.
Answer
View full question & answer→$CH _3- C \equiv N$ and $CH _3- N \equiv C$
Question 131 Mark
What are two possible position isomers of $C _2 H _4 Cl _2$ ?
View full question & answer→Question 141 Mark
Which hybridisation is an positive charge carbon in carbocation?
Answer
View full question & answer→$sp ^2$ hybridisation is an positive charge carbon in carbocation.
Question 151 Mark
What do you meant by carbocation?
Answer
View full question & answer→Carbocation is that intermediate species in which carbon have positive charge and on this carbon sextet is formed.
Question 161 Mark
From homolytic fission of covalent bond, which species is formed?
Answer
View full question & answer→By heterolytic cleavage of covalent bond ion forms.
Question 171 Mark
Give the name of most stable free radical and formula.
Answer
View full question & answer→Triphenylmethyl $\left[\left( C _6 H _5\right)_3 \dot{ C }\right]$ free radical is most stable.
Question 181 Mark
Define free radical.
Answer
View full question & answer→That unstable neutral species which have odd number of electrons are called free radicals.
Question 191 Mark
Give the general formula of alkanol series.
Answer
View full question & answer→The general formula of alkanol ( ROH $)$ is $C_{n} H_{2 n+2} O .$
Question 201 Mark
Give an example of heterocyclic unaromatic compound.
Question 211 Mark
Which type of compound is cyclopentene?
Question 221 Mark
Which hydrocarbon does not follow the iso law in common name?
Answer
View full question & answer→Isooctane.
Question 231 Mark
Write IUPAC name of tertiary butyl alcohol.
Question 241 Mark
Which element must be present in organic compounds?
Answer
View full question & answer→Carbon.
Question 251 Mark
Write the principle of Le-Beil and Van't Hoff.
Answer
View full question & answer→All four valencies of carbon are arranged at four corners of tetrahedral. This is Le-Beil's and Vant't Hoff principle.
Question 261 Mark
What do you meant by $\pi$ bond?
Answer
View full question & answer→The bond formed by overlapping of orbitals is $\pi$ bond.
Question 271 Mark
What do you meant by $\sigma$ bond?
Answer
View full question & answer→The bond formed by head-on overlapping between atomic orbitals is called $\sigma$ bond.
Question 281 Mark
Can homologue ever be isomers?
Answer
View full question & answer→No, homologue can't be isomers.
Question 291 Mark
What do you meant by functional group?
Answer
View full question & answer→An atom or group of atom which are responsible for specific properties of organic compound is known as functional group.