Question 4 :
Structural isomerism and stereoisomerism should be considered when answering this question.<br/>The molecular formula of compound X is $C_5H_{12}O$.<br/>Compound X:<br/>$\bullet$ reacts with alkaline aqueous iodine<br/>$\bullet$ can be dehydrated to form two alkenes only.<br/>What could be the identify of compound X?<br/>
Question 5 :
Assertion: Aldehyde have lower boiling point than ether.
Reason: Aldehydes are less polar than ether.
Question 8 : Alcohols, aldehydes and nitriles can each be converted into carboxylic acids. Which descriptions of their conversions into carboxylic acids are correct?<table class="wysiwyg-table"><tbody><tr><td><br></td><td>alcohols</td><td>aldehydes</td><td>nitriles</td></tr><tr><td>A</td><td>hydrolysis</td><td>hydrolysis</td><td>hydrolysis</td></tr><tr><td>B</td><td>hydrolysis</td><td>hydrolysis</td><td>oxidation</td></tr><tr><td>C</td><td>oxidation</td><td>oxidation</td><td>hydrolysis</td></tr><tr><td>D</td><td>oxidation</td><td>oxidation</td><td>oxidation</td></tr></tbody></table>
Question 10 :
Lower aldehyde and ketones attributed to the formation of  ______bonding with water molecules.<br/>
Question 15 :
When acetone is condensed into a ketol the reagent used is :<br/>
Question 16 :
The addition compound obtained by treating propanone with hydrogen cyanide is:
Question 17 :
Some polluting gases are removed from car exhaust fumes using a catalytic converter.<br>Platinum or palladium can be used as the catalyst. The reactions are faster when platinum is the catalyst than they are when palladium is the catalyst.<br>Which statements are correct?<br>$1$. Platinum acts as a heterogeneous catalyst in these reactions.<br>$2$. The palladium-catalysed reactions have higher activation energies than the platinum-catalysed reactions.<br>$3$. The platinum-catalysed reactions are more exothermic than the palladium-catalysed reactions.<br>
Question 26 :
In which of the following solvent/(s), aldehydes and ketones are soluble?<br>
Question 27 :
As the carbon chain increases in aldehyde and ketone compounds, solubility in water:
Question 29 :
$ CH_{3}-CH= C(CH_{3})_{2}    \xrightarrow[(CH_{3})_{2}S]{O_{3}}$ ?<br/><br/>Products obtained at the end of the reaction when given compound is subjected to ozonolysis are:
Question 30 :
n-Propyl alcohol is obtained on hydrolysis of the adduct obtained by the reaction of:
Question 31 :
$0.40g$ of an organic compound $(A)$, (Molecular formula ${C}_{5}{H}_{8}O$) reacts with x mole of ${CH}_{3}MgBr$ to liberate $224mL$ of a gas at STP. With excess of ${H}_{2}$, $(A)$ gives pentan-1-ol. The correct structure of $(A)$ is:
Question 32 :
Olefin, which gives $CH_3CHO$ and $CH_3CH_2CHO$ on ozonization and hydrolysis is :<br/>
Question 33 :
Assertion: $\beta-$ hydrogen atom of carbonyl compounds is more acidic in nature than $\alpha$ hydrogen.
Reason: $\beta-$ hydrogen is directly attacked to carbon next to carbonyl carbon.
Question 35 :
Identify the compounds which give yellow precipitate with ${I}_{2}+NaOH$<br>(a) Ethyl alcohol (b) Acetone<br>(c) Propyl alcohol (d) 2-propanol<br>(e) 3- butanone (f) Butanal
Question 36 :
A molecule of hydrocarbon 'X' can add upon 2 molecules of $Br_2.$ 'X' on ozonolysis gives two different products which can not be further oxidised. Identify 'X'.
Question 37 :
Fill in the blanks by suitable choices .<br/>The carbon atom in carbonyl group is________ hybridised .The carbonyl group in aldehydes and ketones undergoes_______ reactions . Aldehydes which have $\alpha  - H $ atom undergo______ reaction . 
Question 40 :
What is the compound called if remaining two valencies of a carbonyl group are satisfied by two alkyl groups
Question 45 :
State the oxidation number of carbonyl carbon in methanal and methanoic acid respectively:
Question 46 :
The solubility of water decreases rapidly with the increase in the size of ------------ groups attached to carbonyl group. <br>
Question 47 :
The conversion of acid chlorides into aldehydes by reduction is termed ...............
Question 48 :
The general formula for aldehydes is $C_nH_{2n+1}CHO$. The value of n for the first member.
Question 50 :
Which of the following aldehyde is a gas at room temperature ?
Question 52 :
Assertion (A) : The solubility of aldehydes and ketones in water decreases with increase of size of the alkyl group<br/>Reason (R) Alkyl groups are electron releasing groups<br/>
Question 54 :
The molecular weight of acetone is M. The molecular weight of diacetone alcohol is:
Question 55 :
$CH_{3} - C \equiv CH + H_{2}O \underset {H_{2}SO_{4}}{\xrightarrow {HgSO_{4}}}(A)$The product $A$ in above reaction is:
Question 56 :
The order or reactivity of phenyl magnesium bromide with the following compounds is:(I) $CH_3-\overset{\displaystyle O}{\overset{\displaystyle ||}{C}}-CH_3$(II) $H-\overset{\displaystyle O}{\overset{\displaystyle ||}{C}}-CH_3$<br/>(III) $Ph-\overset{\displaystyle O}{\overset{\displaystyle ||}{C}}-Ph$
Question 57 :
Which of the following is a true statement about aromatic aldehydes and ketones?<br/>
Question 58 :
In the followingsequence of reactions, the alkene affords the compound 'B'<br>$CH_3CH = CHCH_3\,\xrightarrow{O_3}\,A\, \xrightarrow[Zn]{H_2O}\,B$The compound B is:
Question 59 :
The reaction of $CH_{3}CHO$ and $NH_{2}-NH_{2}$, and the formation of $CH_{3}-CH=N-NH_{2}$ is an example of :
Question 60 :
Formaldehyde, is the first member of the aldehyde family is a ______at a ordinary temperature. <br/>
Question 63 :
Statement- I: $(CH_{3})_{2}CHCHO$ mainly undergoes Cannizzaro reaction when heated with the strong alkali.<br/>Statement- II : Steric hindrance prevents aldol condensation.<br/>
Question 65 :
An unsaturated hydrocarbon 'A' adds two molecules of $H_2$ and on reductive ozonolysis gives butane-$1$, $4$-dial, ethanal and propanone. Give the IUPAC name of A.
Question 66 :
$C \xleftarrow{Zn-Hg/HCl} \underset{A}{C_3H_6O} \xrightarrow{I_2/NaOH} B$<br/>Compound $A (C_3H_6O)$ undergoes following reactions to form $B$ and $C$. Identify $A, B$ and $C$.
Question 67 :
Structure of $A$ and the type of isomerism in the above reaction are respectively:$CH_3-C\equiv CH \xrightarrow[1\%\, HgSO_4]{40\%\,H_2SO_4} A \xrightarrow{Isomerisation} CH_3COCH_3$
Question 68 :
Assertion: PhCOCOCOPh forms stable hydrate.
Reason: The compound in the hydrate from has intramolecular H-bonding.
Question 70 :
Assertion: When 1 mole of benzaldehyde and 1 mole of cyclohexanone is treated with 1 mol of semi carbazide, cyclohexanone semicarbazone precipitates first and finally precipitate of semicarbazone of benzaldhyde is formed
Reason: Initial one is kinetically controlled product and later one is themodynamically controlled product.
Question 72 :
One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of $44u$. The alkene is:
Question 73 :
The reactant which is not used in preparation of benzaldehyde in Etard method is:<br/>
Question 74 :
Which of the following reactions will not result in the formation of carbon-carbon bond?
Question 75 :
$\displaystyle C_{6}H_{5}CH_{3}\xrightarrow[]{CrO_{2}Cl_{2}}A\xrightarrow[]{H_{2}O}B$<br/>The functional group present in B and name of the reaction would be :<br/>
Question 76 :
Assertion: Both o-hydroxy benzaldehyde and p-hydroxy benzaldehyde have same molecular weight and show H-bonding.
Reason: Melting point of p-hydroxy benzaldehyde is more than o-hydroxy benzaldehyde.
Question 78 :
Which of the following products is correctly mentioned in the following reactions?<br/>
Question 80 :
Predict which of the following compounds will have a lower boiling point than 1-butanal.
Question 81 :
When methane is heated with dioxygen in the presence of $Mo_2O_3$ catalyst, the organic product obtained is:
Question 82 :
Statement- I: The addition of ammonia derivatives on carbonyl compound is carried in weakly acidic medium.<br/>Statement- II : In weakly acidic medium attacking nuclephile is also protonated.<br/><br/>
Question 83 :
$P\xrightarrow  [2.{ H }_{ 3 }{ O }^{ + } ]{ { 1.C{ H }_{ 3 }MgBr}  } R\xrightarrow [2. \Delta ]{ 1.\ dil.\ NaOH } $  4-methylpent-3-en-2-one<br/>$P$ is :
Question 84 :
Choose the correct alkyne which gives alkanal on hydroboration and hydrolysis.
Question 85 :
Consider the following reaction sequence,<br/>$\displaystyle { CH }_{ 3 }C\equiv CH\,\xrightarrow [ HCl ]{ 2\quad mole } A\xrightarrow [ aq.KOH ]{ Heat } B$<br/>The products (A) and (B) are, respectively :<br/>
Question 86 :
Among the given compounds, the compound which is most susceptible to a nucleophilic attack at the carbonyl group is :<br/>
Question 87 :
$(CH_3)_3 CCHO \xrightarrow{conc. OH^-} X + Y$X and Y are :
Question 90 :
Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of:
Question 91 :
Acetaldehyde forms white crystalline precipitate on mixing with a ______solution of ______ :<br/>
Question 92 :
A compound, containing only carbon, and hydrogenand oxygen, has a molecular weight of 44. On complete oxidation it is converted into a compound of molecular weight 60. The original compound is
Question 93 :
Consider the following reaction sequence,<br/>$CH_3C\:\equiv\:CH\underset { HgSO_{ 4 } }{ \overset { aq.H_{ 2 }SO_{ 4 } }{ \longrightarrow  }  } A\underset { Heat }{ \overset { PCl_{ 5 } }{ \longrightarrow  }  } B$<br/>The products $(A)$ and $(B)$ are, respectively :
Question 94 :
State whether the following statements is true or false:<br>The minimum number of carbon atoms in a ketone molecule is two.
Question 96 :
Compound 'A' on chlorination gives compound 'B', compound 'B' reacts with alc. KOH gives gas 'C', which decolourizes Baeyer's reagent and ozonolysis of compound 'C' gives only HCHO compound. Then compound 'A' is:
Question 97 :
Aldehydes or ketones when treated with $C_6H_5 - NH - NH_2$, the product formed is:
Question 98 :
Which of the following reagents convert the acid chloride into aldehyde? <br/>$CH_{3}-CH_{2}-CH_{2}-CO-Cl\rightarrow CH_{3}-CH_{2}-CH_{2}-CHO$<br/>
Question 99 :
$\underset{\underset{(Only \, one)}{C_4H_6O_2}}{\underset{\,\,\,\,\,\,\,\downarrow \,\, O_3}{\underset{(X)}{C_8H_{12} }}}\xrightarrow{H_2/Ni} \underset{(Y)}{C_8H_{16}} \xrightarrow{Cl_2/hv}$Two monochloro products<br/>Select the correct statement :<br/>
Question 101 :
One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of $44u$. The alkene is:<br>
Question 104 :
Statement $(I)$: $2,2-dimethylpropanal$ undergoes Cannizzaro reaction with concentrated $NaOH$.<br/>Statement $(II)$: Cannizzaro is a disproportionation reaction.<br/>
Question 105 :
Write the $IUPAC$ names of the following ketones and aldehydes. Whereverpossible, give also common names.<br>
Question 106 :
Arrange the following compounds in the increasing order of their boiling points.<br/>$CH_3CH_2CH_2CHO, CH_3CH_2CH_2CH_2OH, H_5C_2-O-C_2H_5, C_2H_5CH_2C_2H_5$
