List of top Chemistry Questions asked in TS EAMCET

The following equilibrium is established at 1100 K in a closed V L flask: \[ C(s)+CO_{2}(g)\rightleftharpoons2CO(g) \] The pressure of equilibrium mixture is 1 atm. Among the gaseous compounds, CO has 84% by mass. $K_c$ of this reaction is (approximately) ($R=0.082~L~atm~mol^{-1}K^{-1}$). Assume that CO and $CO_2$ are ideal gases.

The $\Delta_f\text{H}^\ominus$ of $\text{BaCO}_3\text{(s)}$, $\text{BaO(s)}$ and $\text{CO}_2\text{(g)}$ is respectively $-1216.3$, $-553.5$ and $-393.5\text{ kJ mol}^{-1}$. What is the value of $x$ (in $\text{kJ mol}^{-1}$) in the following reaction?} \[ \text{BaCO}_3\text{(s)} \xrightarrow{\Delta} \text{BaO(s)}+\text{CO}_2\text{(g)}-x \]

The $\Delta_f\text{H}^\ominus$ of $\text{BaCO}_3\text{(s)}$, $\text{BaO(s)}$ and $\text{CO}_2\text{(g)}$ is respectively $-1216.3$, $-553.5$ and $-393.5\text{ kJ mol}^{-1}$. What is the value of $x$ (in $\text{kJ mol}^{-1}$) in the following reaction?} \[ \text{BaCO}_3\text{(s)} \xrightarrow{\Delta} \text{BaO(s)}+\text{CO}_2\text{(g)}-x \]

The difference in bond angles between $\text{SO}_2$ and $\text{H}_2\text{O}$ is:}

$\text{BF}_3$ reacts with $\text{NH}_3$ in 1:1 ratio and gives 'X'. The hybridization and geometry around B and N atoms in 'X' respectively are:}

The element with atomic number 114 has outer shell electron configuration as that of element 'X'. What is X?

A gaseous mixture contains $\text{H}_2$ and $\text{O}_2$. The pressure of the mixture is $1\text{ bar}$. The weight percentage of $\text{O}_2$ is 80. The ratio of partial pressures of $\text{H}_2$ and $\text{O}_2$ is:}

$\text{KMnO}_4$ oxidizes $\text{M}^{2+}$ to $\text{M}^{4+}$ in acid medium. $500\text{ mL}$ of $0.02\text{M}$ $\text{M}^{2+}$ solution requires $500\text{ mL}$ of $x\text{ M}$ $\text{MnO}_4^-$ solution for complete oxidation. The value of $x$ is:}

Consider the following oxides: $\text{SO}_2$, $\text{P}_2\text{O}_5$, $\text{SO}_3$, $\text{Al}_2\text{O}_3$, $\text{K}_2\text{O}$, $\text{MgO}$. The most acidic and most basic oxides are respectively:}

The correct sequence of reagents X and Z in the conversion of diazonium salt to p-benzoquinone is:

Which one of the following carboxylic acids has the highest $\text{p}K_a$ value?}

Match the following:

The major end product Z in the given sequence of reactions is:

Aryl halides are less reactive towards nucleophilic substitution reaction when compared to alkyl halides. This is because
• [I.] If aryl cation is formed, it is not stabilized by resonance
• [II.] $\text{C}-\text{X}$ has partial double bond character due to resonance}
• [III.] $\text{sp}^3$-hybridized carbon is attached to the halogen}
• [IV.] $\text{C}-\text{X}$ bond length is more} The correct reasons are

Which one of the following is not used as a filler in laundry soaps?

The hybridization and magnetic nature of $\left[\text{CoF}_6\right]^{3-}$ respectively are:}

What is the amino acid which does not contain $-\text{NH}_2$ group in its structure?}

Identify Z in the given sequence of reactions:

Given below are two statements:
Statement-I: Reducing property of dioxide increases from $\text{SO}_2$ to $\text{TeO}_2$.}
Statement-II: $\text{Pb}_3\text{O}_4$ on heating gives lead dioxide and oxygen.}
The correct answer is:

Which one of the following statements is not correct regarding interhalogen compounds?

Which of the following correctly represents the graph between $\log\left(\frac{m}{x}\right)$ and $\log P$?

German silver is an alloy of:

Ziegler-Natta catalyst is used in the manufacture of high density polyethene. It contains (C$_2$H$_5$)$_3$Al and chloride of a transition metal 'X'. What is 'X'?