The ethylene molecule have :
- A$4 \sigma$ and $4 \pi$ bond
- B$5 \sigma$ and $3 \pi$ bond
- ✓$5 \sigma$ and $1 \pi$ bond
- D$5 \sigma$ and $2 \pi$ bond
Answer: C.
View full solution →Question types
PART - 2 CH - 9 Hydrocarbons question types
141 questions across 8 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.
141
Questions
8
Question groups
5
Question types
01
M.C.Q (1 Marks)
24 Q→02Fill In The Blanks.
10 Q→03True False[1 Marks ]
10 Q→041 Marks Question
26 Q→052 Marks Questions
26 Q→063 Marks Question
10 Q→07Match the following.
6 Q→085 Marks Questions
29 Q→Sample Questions
PART - 2 CH - 9 Hydrocarbons questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Propene and propyne can be differentiated by :
- AConc. $H _2 SO _4$
- B$By Br _2$ and $CCl _4$
- ✓$By AgNO _3$ and $NH _4 OH$
- DBy Ozone
Answer: C.
View full solution →The alkene which give only $CH _3 CHO$ after ozonolysis and hydrolysis is :
- Aethene
- Bpropene
- Cbut-1-ene
- ✓but-2-ene
Answer: D.
View full solution →Which of the following alkane give four isomeric monochloroalkane on halogenation?
- An-butane
- BIsobutane
- Cn-pentane
- ✓Isopentane
Answer: D.
View full solution →An alkane has molecular mass 72 on its chlorination only 1 -monochloro derivative is formed. The alkane is :
- An-pentane
- ✓Neopentane
- Cisopentane
- Dbutane
Answer: B.
View full solution →Alkanes were known as $\ldots\ldots\ldots$
View full solution →$\ldots\ldots\ldots$ is obtained by hydroboration of propene.
View full solution →In unsaturate unsymmetrical alkenes $\ldots\ldots\ldots$ is attached in addition of HX.
View full solution →The main product of reaction $\underset{(9: 1)}{ CH _4}+ O _2 \xrightarrow[\Delta 100 \text { atmp }]{ Cu 200^{\circ} C }$ is.$\ldots\ldots\ldots$
View full solution →The halogenation of alkanes is $\ldots\ldots\ldots$ reaction.
View full solution →The isomerisation of n-butane gives 2 -methy1 propane.
By thermal decomposition of higher alkanes, alkynes are obtained.
For aromatisation of alkanes minimum 6 carbons are must in straight lines.
The chlorosulphonation reaction is also known as Reed reaction.
The main product of chlorination of propane is 1-chloropropane.
Identify X in following reaction: $X +2 HI \xrightarrow[\Delta]{ RedP } CH _3- CH _2- CH _3+ H _2 O + I _2$
View full solution →An alkene with molecular formula C4H8 react with HBr in presence and absence of peroxide to form the same product. Write structural formula of it.
How will you differentiate between ethene and ethylene?
Why methane do not react with chlorine in dark?
What is artificial camphor?
Do the following conversion in three steps.
(a) But-2-ene have two geometrical isomers while but-1-ene not why?
(b) A compound having two carbon atoms decolourises Bayer's reagent but do not react with ammonium silver nitrate. Name the compound.
(b) A compound having two carbon atoms decolourises Bayer's reagent but do not react with ammonium silver nitrate. Name the compound.
What will be the main product when sec. butyl chloride react with alc. KOH ? Write the equations of it.
What are non-benzanoid aromatic compounds? Explain with examples.
How will you prove that benzene have three double bonds, means it is an unsaturated compound but this double bond is different from normal double bonds?
By complete combustion of 3 mole benzene :
(a) How many moles of $CO _2$ will form?
(b) How many gm of $H _2 O$ will form?
View full solution →(a) How many moles of $CO _2$ will form?
(b) How many gm of $H _2 O$ will form?
How much water is produced from complete combustion of 30 gm propyne.
How many moles of $CO _2$ are obtained from complete combustion of 21 gm propene?
View full solution →How much oxygen and air is required for complete combustion of $8 4 gm$ propene?
View full solution →What happens when :
(i) ethylene dibromide is heated with zinc.
(ii) solution of sodium succinate is electrolysed.
(iii) ethylene dichloride is heated with zinc.
(i) ethylene dibromide is heated with zinc.
(ii) solution of sodium succinate is electrolysed.
(iii) ethylene dichloride is heated with zinc.
Match column A and B and choose correct code :
View full solution →| Column A | Column B |
| 1. Mustard gas | (a) $180^{\circ}$ |
| 2. PAN | (b) $HC \equiv CH$ |
| 3. $H - C - C$ bond angle in ethyne | (c) Polymer of vinyl cyanide |
| 4. Dehydrohalogenation $\text { in } CH_3 CHBr_2$ | (d) War gas |
Match column A and B and choose correct code :
View full solution →| Column A | Column B |
| 1. Thermal decomposition of propane. | (a) Polymer of vinyl chloride |
| 2. $CH _3 CH = CH _2+ HBr \xrightarrow{\text { Peroxide }}$ | (b) Propan-2-ol |
| 3. $\begin{array}{l} CH _3- CH = CH _2+ H _2 O \xrightarrow{ H ^{+}}\end{array}$ | (c) Propene + ethene |
| 4. PVC | (d) $CH _3- CH _2- CH _2- Br$ |
Match column A and B and choose correct code :
View full solution →| Column A | Column B |
| 1. But-1-ene and But-2-ene | (a) $F _2> Cl _2> Br _2> I _2$ |
| 2. Reactivity of halogenation in alkanes | (b) But-2-ene |
| 3. Dehalogenation of $CH_3 CHBr_2$ | (c) Position isomers |
| 4. Dehydration of Butan-2-ol | (d) But-2-ene |
Match column A and B and choose correct code :
View full solution →| Column A | Column B |
| 1. Explosive | (a) HCN |
| 2. $CH _4+ N _2 \xrightarrow{\text { electric arc }}$ | (b) $1.34$ pm |
| 3. Free rotation of carboncarbon single bond | (c) Tetraethyl lead |
| 4. $> C = C <$ Bond length | (d) Conformational isomerism |
Match column A and B and choose correct code :
View full solution →| Column A | Column B |
| 1. Bayer's reagent | (a) $C _{12}$ to $C _{16}$ |
| 2. Ozonolysis of but-2-ene | (b) $CH _3- CH _2- CHO$ |
| 3. Hydroformylation of ethene | (c) Test for unsaturation |
| 4. Kerosene oil | (d) $CH _3 CHO$ |
Explain the deactivating and metadirecting effect of nitro group (-NO2) in nitrobenzene.
Explain the structure of triple bond.
Explain the mechanism of sulphonation and Friedel Crafts reaction.
Explain the molecular orbital diagram of benzene.
Write short note on carcinogenic and toxicity of aromatic hydrocarbons.
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