List of top Chemistry Questions asked in TS EAMCET

Dehydration of an organic acid X with concentrated \(\text{H}_2\text{SO}_4\) at 373K gives \(\text{H}_2\text{O}\) and gas Y. The hybridisation of the carbon in Y and nature of Y are respectively

Consider the given sequence of reactions.
\(\text{C}_2\text{H}_6 + \frac{3}{2}\text{O}_2 \xrightarrow[\Delta]{(\text{CH}_3\text{COO})_2\text{Mn}} \text{X} \xrightarrow{\text{Na}} \text{Y}\)
Electrolysis of aqueous solution of Y gives gases P and Q at anode. P and Q are respectively.

When sodium fusion extract of an organic compound is boiled with iron (II) sulphate solution followed by addition of concentrated \(\text{H}_2\text{SO}_4\), gives Prussian blue colour. This confirms the presence of the element

Which of the following is an example of electrophilic substitution reaction?

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At 1000 K, the equilibrium constant for the reaction
\(\text{CO}_2(\text{g}) + \text{H}_2(\text{g}) \rightleftharpoons \text{CO}(\text{g}) + \text{H}_2\text{O}(\text{g})\) is 0.53. In a one litre vessel, at equilibrium the mixture contains 0.25 mole of CO, 0.5 mole of \(\text{CO}_2\), 0.6 mole of \(\text{H}_2\) and \(x\) moles of \(\text{H}_2\text{O}\). The value of \(x\) is

One mole of an ideal gas at 300 K and 20 atm expands to 2 atm under isothermal and reversible conditions. The work done by the gas is \(-x\ \text{kJ mol}^{-1}\). The value of \(x\) is
\((R=8.3\ \text{J K}^{-1}\ \text{mol}^{-1})\)

In which of the following the s-block elements are arranged in the correct order of their melting points?

Observe the following statements
Statement - I: Both LiF and CsI have low solubility in water
Statement - II: Low solubility of LiF in water is due to smaller hydration enthalpy of ions and that of CsI is due to its high lattice enthalpy
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If the number of moles of \(\text{Fe}^{2+}\) ions oxidized by one mole of acidified \(\text{MnO}_4^-\) is \(x\), the number of moles of \(\text{Fe}^{2+}\) ions oxidized by one mole of acidified \(\text{Cr}_2\text{O}_7^{2-}\) is

Electron gain enthalpy values (\(\Delta_{eg}H\)) (in kJ mol\(^{-1}\)) of elements X, Y and Z are \(-349, -200\) and \(-295\) respectively. X, Y and Z are respectively

The molecule `X' has see-saw shape with central atom in \(sp^3d\) hybridization. What is `X'?

Two vessels are filled with ideal gases A and B and are connected through a pipe of zero volume as shown in figure. The stop cock is opened and the gases are allowed to mix homogeneously and the temperature is kept constant. The partial pressures of A and B respectively (in atm) are

Observe the following list of molecules. Number of polar and non polar molecules are respectively
\(\text{NH}_3, \text{BF}_3, \text{NF}_3, \text{H}_2\text{S}, \text{CO}_2, \text{CH}_4, \text{CHCl}_3, \text{H}_2\text{O}\)

Observe the following data (\(\Delta_i H_1\), \(\Delta_i H_2\) and \(\Delta_{eg}H\) represent the first, second ionisation enthalpies and electron gain enthalpy respectively).

Using the data identify the most reactive metal.

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The reagent which is used to distinguish primary, secondary and tertiary amines from the mixture is

Identify the incorrect match with respect to compounds to be distinguished and reagent used

The products C and D are

In which of the following, intramolecular hydrogen bonding is present?

Identify the compounds A and B involved in the formation of given aldol

What is the product 'Z' in the following reaction sequence?

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Neoprene is the polymer of a monomer X. IUPAC name of X is

\(E^\circ_{M^{2+}/M}\) (in V) is highest for