List of top Chemistry Questions asked in AP EAPCET

$50\, mL$ of $0.02\, M \,NaOH$ solution is mixed $50\, mL$ of $0.06 \,M$ acetic acid solution, the $pH$ of resulting solution is $\left( p K_{a}\right.$ of acetic acid is $4.76, \log 5=0.70$ )
The molecule/ion having diamagnetic nature and a bond order of $1.0$ is
Which one of the following properties has same value for $H_2$ and $D_2$ ?
$6g$ of graphite is burnt in a bomb calorimeter at $25^{\circ}C$ and $1\, atm$ pressure. The temperature of water increased from $25^{\circ}C$ to $30^{\circ}C$. If $\Delta H$ of this reaction is $-248 \,kJ\, mol^{-1}$, find out $C_v$ (in $kJ\, K^{-1}$) of bomb calorimeter.
The number of species of the following that can act both as Bronsted acids and bases is $HCl , ClO _{4}^{-},{ }^{-} OH , H ^{+}, H _{2} O , HSO _{4}^{-}, SO _{4}^{2-}$, $H _{2} SO _{4}, Cl ^{-}$
If the kinetic energy of $O_2$ gas is $4.0 \,kJ \; mol^{-1}$ . its RMS speed in $cm \; s^{-1}$ is
The volume of $0.02\, M$ acidified permanganate solution required for complete reaction of $60\, mL$ of $0.01\, MI^{-}$ ion solution to form $I_2$ in $mL$ is
In which of the following the election gain enthalpy of elements is correctly arranged?
The $IUPAC$ name of the following compound is
The species, which has the bond order same as that of $F_2$, molecule is
The ratio of lowest energy in terms of wave numbers of Balmer and Lyman series of lines of atomic spectrum of hydrogen is
The environmental friendly chemical now-a-days used for bleaching the paper in the presence of a suitable catalyst is

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A): \([SiF_6]^{2-}\) is formed but \([SiCl_6]^{2-}\) is not 

Reason (R): Electronegativity \((EN)\) of \(F\) is higher than \(EN\) of \(Cl\)

In the light of the above statements, choose the correct answer from the options given below

At $1000\, K$, the equilibrium constant. $K_{C}$ for the reaction $2 NOCl (g) \rightleftharpoons 2 NO (g)+ Cl _{2}(g)$ is $4.0 \times 10^{-6} mol\, L ^{-1}$. The $K_{P}$ (in bar) at the same temperature is $\left(R=0.083 \,L\right.$ bar $\left. K ^{-1}\, mol ^{-1}\right)$
$BF_3$ reacts with $NaH$ at $450\, K$ to form $NaF$ and $X$. When $X$ reacts with $LiH$ in diethyl ether. Y is formed. What is Y?
From the following data $CH _{3} OH (l)+\frac{3}{2} O _{2}(g) \longrightarrow CO _{2}(g)+2 H _{2} O (l)$ $\Delta_{r} H^{\circ}=-726\, k J\, mol ^{-1}$ $H _{2}(g)+\frac{1}{2} O _{2}(g) \longrightarrow H _{2} O (l) $ $\Delta_r H ^{\circ}=-286\, kJ\, mol ^{-1}$ $C (\text { graphite })+ O _{2}(g) \longrightarrow CO _{2}(g)$ $\Delta_{r} H ^{\circ}=-393\, kJ\, mol ^{-1}$ The standard enthalpy of formation of $CH _{3} OH (l)$ in $kJ\, mol ^{-1}$ is
A light of frequency $1.6 \times 10^{16} \, Hz$ when falls on a metal plate emits electrons that have double the kinetic energy compared to the kinetic energy of emitted electrons when frequency of $1.0 \times 10^{16} \, Hz$ falls on the same plate. The threshold frequency $(v_0)$ of the metal in $Hz$ is
The extent of physisorption of an adsorbate increases with
Which one of the following statements is not correct?
The four quantum numbers of the valence electron of potassium are :
Which of the following has magic number of protons and neutrons?
Which of the following has the highest first ionization potential?
The radii of $ \text{F,}{{\text{F}}^{-}}\text{O} $ and $ {{\text{O}}^{2-}} $ are in the order
The standard reduction potentials at 298 K for the following half cell reactions are given below: $ Z{{n}^{2+}}(aq)+2{{e}^{-}}\rightleftharpoons Zn(s)-0.762 $ $ C{{r}^{3+}}(aq)+3{{e}^{-}}\rightleftharpoons Cr(s)-0.74 $ $ 2{{H}^{+}}(aq)+2{{e}^{-}}\rightleftharpoons {{H}_{2}}(g)\,0.00 $ $ F{{e}^{3+}}(aq)+{{e}^{-}}\rightleftharpoons F{{e}^{2+}}(aq)+0.77 $ Which one of the following is the strongest reducing agent?
The first emission line in the atomic spectrum of hydrogen in the Balmer series appears at: