List of top Chemistry Questions asked in AP EAMCET

Sodium nitrite is reacted with $H_2SO_4$ to form $NaHSO_4, HNO_3$, water and $X$. Gold is dissolved in aqua-regia to form water, $AuCl^{-}_4$ and $Y. X$ and $Y$ are respectively

Which of the following metals exist in liquid state duiing summer season?

In the first order thermal decomposition of $C _{2} H _{5} I (g) \longrightarrow C _{2} H _{4}(g)+ HI (g)$, the reactant in the beginning exerts a pressure of $2$ bar in a closed vessel at $600 \,K$. If the partial pressure of the reactant is $0.1$ bar after $1000$ minutes at the same temperature the rate constant in $\min ^{-1}$ is $(\log 2=0.3010)$

In Dumas method one gram of carbon compound gives $50 \,mL$ of $N _{2}$ at $300\, K$ and $740 \,mm\, Hg$ pressure. If the aqueous tension at $300\, K$ is $15\, mm\, Hg$, what is the percentage of nitrogen in it?

Identify the metal which is not common to German Silver and Brass.

The wave functions of $1s$ orbitals of two hydrogen atoms are $\Psi_A$ and $\Psi_B$. $\Psi_A$ and $\Psi_B$ are linearly combined to form two molecular orbitals ($\sigma$ and $\sigma^{\ast}$). Which of the following statements are collect? I. $\sigma^{*}$ is equal to $(\Psi_{A}-\Psi_{B})$. II. In $\sigma$ - orbital, one nodal plane is present in between two nuclei. III. The energy of $\sigma$ - orbital is lower than the energy of $\sigma^{*}$ -orbital.

The pair of metals refined by "vapour phase refining" is

The non-biodegradable waste formed in fertilizer industries is

The copper (II) halide which does not exist is

Chlorine oxidises sulphur dioxide in the presence of water to give an oxyacid $A$. Chlorine also oxidises iodine in the presence of water to give an oxyacid $B$. The oxidation states of $S$ and $I$ in $A$ and $B$ are respectively

The average translational kinetic energy of a molecule in a gas becomes equal to $0.69\, eV$ at a temperature about [Boltzmann constant = $1.38 \times 10^{-23} \; J \; K^{-1}$]

$\ce{H_2C = CH_2 + O_2 ->[Aqueous \; medium] Ch_3CHO}$ What is the catalyst used in the above green reaction?

Which of the following are carbonate ores? l) Magnetite II) Kaolinite III) Siderite IV) Calamine

Which one of the following has maximum number of hybrid orbitals ?

Observe the following molecules. $PCl_5, BrF_5, ClF_5, PF_5, ClF_3, XeF_4, XeF_2, IF_5 $ The number of molecules having square pyramidal geometry from the above is

White phosphorus is heated with concentrated $NaOH$ in $CO _{2}$ atmosphere to form a gas $A$ and compound $B$. When $A$ is bubbled into aqueous $CuSO _{4}$ solution copper phosphide and $C$ are formed, $B$ and $C$ are respectively

Which one of the following is not present in the nitration mixture?

$KO _{2}$, reacts with water to form $A, B$ and $C .$ $B$ forms $C$ when it reacts with iodine in basic medium. What are $B$ and $C$ respectively?

Noble metals like gold and platinum are soluble in which of the following mixtures?

Which of the following is water-gas shift reaction?

Which of the following statements are correct? I) $\ce{P_4}$ molecule is very reactive because of angular strain II) The basicity of $\ce{H_3PO_3}$ is $3$ III) In gas phase, all $\ce{P-Cl}$ bonds of $\ce{PCl_5}$ have same bond length IV) In solid state.$ \ce{PCl_5}$ exists as an ionic solid, in which anion $\ce{[PCl_6]^{-}}$ has octahedral and cation $\ce{[PCl_4]^{+}}$ has tetrahedral shape.

Identify the halogen exchange reaction from the following

$XeF_4$ is square planar where as $CCl_4$ is tetrahedral because

Which of the following structures represents cumene?

Isopropyl benzene on aerial oxidation followed by acid hydrolysis of the resulting compound yields