List of top Questions asked in KEAM

The various types of hydrides and examples of each type are given below. {ll} Hydride type & Compound
(a) Electron deficient & (i) LiH
(b) Saline & (ii) CH$_4$
(c) Electron-precise & (iii) NH$_3$
(d) Interstitial & (iv) B$_2$H$_6$
(e) Electron rich & (v) CrH
Choose the correct matching from the codes given below
Identify the T-shaped molecule in the following
Which one of the following molecules has the least dipole moment?
Which one of the following is a non-reducing sugar?
The amino acid containing mercaptan unit is
In double strand helix structure of DNA, heterocyclic base cytosine forms hydrogen bond with
If 27 g of water is formed during complete combustion of pure propene (C$_3$H$_6$), the mass of propene burnt is
In the hydrogen atomic spectrum, the emission of the least energetic photon takes place during the transition from $n=6$ energy level to $n = $ _____ energy level.
Narcotic analgesic is
Which one of the following can be prepared by Gabriel phthalimide synthesis?
4-Nitrotoluene is treated with bromine to get compound 'P'. 'P' is reduced with Sn/HCl to get 'Q'. 'Q' is diazotised and then treated with phosphinic acid to get 'R'. 'R' is oxidized with alkaline KMnO$_4$ to get 'S'. Identify 'S'.
Predict the product (B) in the following sequence of reactions \[ \text{Ethylbenzene} \xrightarrow{KMnO_4 / KOH} A \xrightarrow{H_3O^+} B \]
Freon 12 is manufactured from CCl$_4$ by
Some organic compounds are given in List I and their uses in List II. Choose the correct matching
Which one of the following involves nucleophilic addition?
The total number of monohalogenated products formed by halogenation of 2,4,4-Trimethylhexane is
The number of possible stereoisomers of the compound CH$_3$–CH=CH–CH$_3$ is
Number of acyclic structural isomers of the compound having the molecular formula C\(_4\)H\(_{10}\)O is
375 mg of an alcohol reacts with required amount of methyl magnesium bromide and releases 140 mL of methane gas at STP. The alcohol is
Which one of the following is a benzenoid aromatic compound?
Consider the following two complex ions: [CoF\(_6\)]\(^{3-}\) and [Co(C\(_2\)O\(_4\))\(_3\)]\(^{3-}\). Which of the following statements is/are false?
Chlorophyll is a coordination compound of
The major product obtained by the addition reaction of HBr to 4-Methylpent-1-ene in the presence of peroxide is
In which one of the following properties, physisorption and chemisorption resemble each other?
The rate constant of the reaction, \( 2N_2O_5 \rightarrow 4NO_2 + O_2 \) at 300 K is \( 3 \times 10^{-5} \) s\(^{-1}\). If the rate of the reaction is \( 2.4 \times 10^{-5} \) mol dm\(^{-3}\) s\(^{-1}\), then the molar concentration of \( N_2O_5 \) is