List of top Chemistry Questions asked in VITEEE

Which of the following compounds is formed when a mixture of $K_2Cr_2O_7$ and NaCl is heated with cone. $H_2SO_4$ ?
Compound 'A' of molecular formula $C_4H_{10}O$ on treatment with Lucas reagent at room temperature gives compound ?B\ When compound ?B? is heated with alcoholic $KOH$, it gives isobutene. Compound ?A? and ?B? are respectively
Ionisation energy of $He^+$ is $19.6 \times 10^{-18}\, J$ atom$^{-1}$. The energy of the first stationary state $(n= 1)$ of $Li^{2+}$ is
The molecular formula of diphenyl methane, How many structural isomers are possible when one of the hydrogens is replaced by a chlorine atom?
For the reaction $2N_2O_5 \to 4NO_2 + O_2$, rate and rate constant are $1.02 \times 10^{-4}$ mol $lir^{-1}$ $sec^{-1}$ and $3.4 \times 10^{-5}$ $sec^{-1}$ respectively then concentration of $N_2O_5$ at that time will be
An element occuring in the bcc structure has $12.08 \times 10^{23}$ unit cells. The total number of atoms of the element in these cells will be
The correct order of the thermal stability of hydrogen halides (H-X) is
In Williamson synthesis if tertiary alkyl halide is used than
The reagent (s) which can be used to distinguish acetophenone from benzophenone is (are)
In case of nitrogen, $NCl_3$ is possible but not $NCl_5$ while in case of phosphorus, $PCl_3$ as well as $PCl_5$ are possible. It is due to
In the extraction of Cu, the metal is formed in the bessemer converter due to the reaction:
In a compound, atoms of element Y form ccp lattice and those of element X occupy $2/3^{rd}$ of tetrahedral voids. The formula of the compound will be
\( p \)-cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is
Which of the following statements is not true regarding \( (+) \) Lactose?
If one strand of DNA has the sequence \[ \text{ATGCCTGA}, \text{the sequence in the complimentary strand would be} \]
The starting reagents needed to make the azo compound shown below
Which of the following has maximum number of lone pairs associated with Xe?
The optically active tartaric acid is named as D - (+) tartaric acid because it has a positive
What is the R and S configuration for each stereogenic center in this sugar from top to bottom?
Saponification of coconut oil yields glycerol and palmitic acid.
Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is incorrect?
What is D in the following sequence of reactions?
Consider the reaction: \[ \text{N}_2 (g) + 3 \text{H}_2 (g) \rightarrow 2 \text{NH}_3 (g) \] carried out at constant temperature and pressure. If \( \Delta H \) and \( \Delta U \) are the enthalpy and internal energy changes for the reaction, which of the following expressions is true?
A certain reaction is non spontaneous at 298 K. The entropy change during the reaction is 121 J K\(^{-1}\). Is the reaction endothermic or exothermic? The minimum value of \( \Delta H \) for the reaction is
Iron crystallizes in several modifications. At about 911°C, the bcc ‘a’ form undergoes a transition to the ‘\(\gamma\)’ form. If the distance between the two nearest neighbors is the same in the two forms at the transition temperature, the ratio of the density of iron in \( \text{ferrite} (\rho_1) \) to that of iron in \( \text{austenite} (\rho_2) \) at the transition temperature is