Question 1 :
$CH_3CH_2CH_2CH_3 \, \xrightarrow {Br_2 \, / \, hv}$<br>Major product in the above reaction is:
Question 2 :
Hydrocarbons are the organic compounds that contain the elements _______ and ________.
Question 5 :
Which of the following compounds does not contain a multiple bond?
Question 6 :
A compound $X$ reacts with a compound $Y$, to produce a colourless and odourless gas. The gas turns lime water milky. When $X$ reacts with methanol in the presences of concentrated ${H}_{2}{SO}_{4}$, a sweet smelling substance is produced. The molecular formula of the compound $X$ is
Question 9 :
The organic compounds having double or triple bond(s) in them are termed as ________________.
Question 12 :
A saturated hydrocarbon is shown by ${ C }_{ n }{ H }_{ 20 }$ . The value of $n$ in this compound is:<br/>
Question 14 :
Compounds of carbon and hydrogen which form long chains or branched chains are:
Question 16 :
Which of the following is a monounsaturated hydrocarbon, i.e. the compound that contains one carbon - carbon double bond?
Question 18 :
Which one of the following is not formed when a mixture of methyl bromide and bromobenzene is heated with sodium metal in the presence of dry ether?
Question 19 :
Which of the following compounds is insoluble even in hot concentrated $H_{2}SO_{4}$?
Question 20 :
Assertion: Sodium salt of butanoic acid on heating with soda lime gives butane.
Reason: Decarboxylation reaction yields alkanes having same number of carbon atoms as the parent acid.
Question 21 :
Assertion: Boiling point of pentane is higher than 2,2-dimethylpropane.
Reason: There is steady increase in boiling point with increase in molecular mass.
Question 22 :
Alkanes having odd carbons cannot be prepared in?<br/> A) Wurtz reaction<br/>B) Frankland reaction <br/>C) Kolbe's electrolysis <br/>D) Sabatier-sendersen reaction
Question 23 :
Which of the following compound, on reaction with excess of RMgX, gives 3 moles of alkane (R-H)?
Question 24 :
Which of the following molecules has the shortest carbon-carbon single bond length?
Question 25 :
Which one of the following alksne is NOT formed in Wurtz reaction?
Question 27 :
Select the chain propagation steps in the free-radical chlorination of methane.<br>(1)$Cl_2\, \rightarrow 2Cl^{\cdot}$<br>(2) $Cl^\cdot \, + \, CH_4 \, \xrightarrow \, CH_3C1 \,+ \, H^\cdot$<br>(3) $C1^\cdot \, + \, CH_4 \, \xrightarrow \, CH_3 ^\cdot \, + \, HCI$<br>(4) $H^\cdot \, + \, Cl_2 \, \xrightarrow \, HCl+Cl^\cdot$<br>(5) $CH_3 ^\cdot \, + \, Cl_2 \, \xrightarrow \, CH_3CI+Cl^\cdot$<br>
Question 28 :
$CH_4+Cl_2\xrightarrow{hv} CH_3Cl+HCl$<br/>To obtain high yields of $CH_3Cl,$ the ratio of $CH_4$ to $Cl_2$ must be:<br/>
Question 29 :
Which of the following will have least hindered rotation about carbon-carbon bond?
Question 30 :
Major product of following reaction :<br>$CH_3 \underset{CH_3}{\underset{|}{\overset{CH_3}{\overset{|}{C}}}} - \underset{Cl}{\underset{|}{CH}} - CH_3 \, \xrightarrow{C_2H_5O^-}$
Question 32 :
A gaseous hydrocarbon 'X' on reaction with bromine in light forms a mixture of two monobromo alkanes and HBr. The hydrocarbon' X' can have a molecular formula: 
Question 36 :
Select from pairs of compounds,one with higher boiling point<br/>$CF_{4}$ and hexane<br/>
Question 38 :
The percentage of n-propyl bromide in the bromination of propane is 44%. The relative reactivities of $3, 2$ and $1- H$ atoms are 166 : 82 : 1.<br/>
Question 39 :
Statement 1: The addition of $H_2$ to ethene will form an unsaturated compound called ethane<br/>Statement 2: Ethane, has as many hydrogen atoms bonded to the carbon atoms as possible
Question 40 :
The combustion of a hydrocarbon A gives 0.66 g of carbon dixode and 0.36 g of water. The empirical formula of the hydrocarbon is:
Question 41 :
The products of the following reactions is(are):<br/>$C_2 H_5 Br+2 Na+CH_3 Br \xrightarrow{dry \, either}$?
Question 42 :
State whether the following statement is True or False:<br/>Wurtz reaction is not suitable for the synthesis of alkanes containing an odd number of carbon atoms in good yield. 
Question 43 :
Ethyl bromide (or) chloride can be converted to butane in the presence of
Question 44 :
A mixture of ethyl iodide and n-propyl iodide is subjected to wurtz reaction. The hydrocarbon which will be majorly formed is:
Question 45 :
$Br-CH_{2}-CH_{2}-CH_{3}$ reacts with Na in the presence of ether at $100^{\circ}C$ to produce-<br/>
Question 46 :
Statement - I: When $CH_{3}I$ and $C_{2}H_{5}I$ in the presence of Na/dry ether forms three types of alkanes.<br>Statement - II: In Wurtz reaction Na acts as a reducing agent.
Question 47 :
Which of the following alkanes can be synthesised in good yield by the Wurtz reaction?
Question 48 :
The number of water molecules formed by the combustion of one mole of alkane containing $m$ carbon atoms is:
Question 50 :
Which of the following reactions can be used for the preparation of propane?
Question 52 : Petroleum is separated into useful fractions by fractional distillation.<br>Separation occurs in a fractionating column.<br>Some properties of three of these fractions are shown.<table class="wysiwyg-table"><tbody><tr><td>Fraction</td><td>Boiling point range/ $^{\circ}C$</td><td>Number of carbon atoms in the molecules</td></tr><tr><td>$1$</td><td><br></td><td>$5 - 10$</td></tr><tr><td>$2$</td><td>$320 - 350$</td><td>$16 - 24$</td></tr><tr><td>$3$</td><td>$120 - 210$</td><td><br></td></tr></tbody></table>Which statement is correct?<br>
Question 53 :
Arrange the following hydrocarbons in the increasing order of volume of oxygen required for complete combustion per mole under the same conditions.<br>(a) Ethane (b) Propyne (c) Ethyne (d) Propene (e) Propane (f) Ethene
Question 54 :
Number of moles of oxygen required for the combustion of one mole of an alkane is equal to:
Question 56 :
An alkane with even number of carbon only, can result in:
Question 59 :
During the Kolbe electrolysis of aqueous solution of sodium acetate, 45 ml of $H_{2}$ gas is liberated at the cathode. Then, the volume of the gases liberated at the anode is:
Question 61 :
Aqueous solution of potassium propanoate is electrolysed. Possible organic products are:
Question 62 :
Kolbe's electrolysis method is applicable for the preparation of only symmetrical alkanes of the type $R-R$. 
Question 63 :
By which of the following reagents, butanoic acid can be converted into butane?
Question 64 :
Which of the following reactions is expected to readily give a hydrocarbon product in good yield? 
Question 66 :
Which of the following compounds cannot be prepared singly by the Wurtz reaction?<br>
Question 68 :
Among the following select the alkane that is expected to have lowest boiling point.
Question 69 :
Consider the following statements : A hydrocarbon of molecular formula $C_{5}H_{10}$ is a:<br>I. monosubstituted alkene<br>II. disubstituted alkene<br>III. trisubstituted alkene
Question 70 :
The best method for the preparation of 2,2-dimethylbutane is via the reaction of:
Question 71 :
In which of the following pairs, both members liberate methane gas on reaction with water?
Question 72 :
Assertion: Saturated hydrocarbons are chemically less reactive.
Reason: All isomeric paraffins have same parent name.
