List of top Questions asked in TS EAMCET- 2025

A sample of water contains $\text{Mg}(\text{HCO}_3)_2$ and $\text{Ca}(\text{HCO}_3)_2$. On boiling this water, these hydrogen carbonates are removed as precipitates. The precipitates are

The IUPAC name of the following compound is

Polymer X is an example of polyester and Y is an example of polyamide. X and Y are respectively

The dibasic oxoacid of phosphorus on disproportionation gives two products A and B. A and B are respectively

The polymer chains are held together by hydrogen bonding in a polymer X. Polymer X is formed from monomers Y and Z. What are Y and Z?

Ionization enthalpies of the elements X, Y, Z having successive atomic numbers respectively are 2080, 496, 737 kJ mol$^{-1}$. X, Y, Z are:

Correct statements regarding halides of group 14 elements:
I. Stability of dihalides: SiX$_2$ > GeX$_2$ > SnX$_2$ > PbX$_2$
II. SnF$_4$, PbF$_4$ are ionic
III. PbI$_4$ does not exist

Consider the following redox reaction in basic medium. \( x\text{Cr(OH)}_3 + y(\text{IO}_3)^- + z(\text{OH})^- \rightarrow a(\text{CrO}_4)^{2-} + b(\text{I})^- + c(\text{H}_2\text{O}) \). The incorrect option about it is

Oxoacids of phosphorus are formed in the following reactions. The acid formed in which of the following reactions does contain P - P bond?

Boron trifluoride on reaction with lithium aluminium hydride in ether gives LiF, AlF\(_3\) and X. X on reaction with NH\(_3\) gives Y. Y on further heating gives a compound Z. The number of \(\sigma\)-bonds and \(\pi\)-bonds in Z are x and y respectively. (x+y) is equal to

A solid mixture weighing $5 \text{ g}$ contains equal number of moles of $\text{Na}_2\text{CO}_3$ and $\text{NaHCO}_3$. This solid mixture was dissolved in $1 \text{ L}$ of water. What is the volume (in $\text{mL}$) of $0.1 \text{ M } \text{HCl}$ required to completely react with this $1 \text{ L}$ mixture solution?

Identify the pair of drugs which act as antihistamines.

For the reaction \( R \to P \), half life is independent of initial concentration of the reactant, R. Which one of the following graphs is not correct for this reaction?

At 298 K, if emf of the cell corresponding to the reaction, \( \text{Zn(s)} + 2\text{H}^+ \text{(aq)} \to \text{Zn}^{2+} (0.01 \text{ M}) + \text{H}_2 \text{(g)} \) (1 atm) is 0.28 V, then the pH of the solution at the hydrogen electrode is \( \left( \frac{2.303 RT}{F} = 0.06 \text{ V} \right) \), \( E^0_{\text{Zn}^{2+}|\text{Zn}} = -0.76 \text{ V} \)

Among the following the neutral oxide is

Which of the following compounds are correctly matched with their uses?

Choose the correct statements about allotropes of carbon I. Graphite has layered structure II. Buckminster fullerene is not aromatic in nature III. The distance between two adjacent layers in graphite is 141.5 pm IV. The hybridization of carbons in graphite and Buckminster fullerene is same

An oxoacid of phosphorus 'X' reduces silver nitrate solution to metallic silver and gets oxidised to another compound Y. X and Y respectively are

In which of the following transition metal ion (aquated) is not correctly matched with its colour?

Consider the following statements
Statement I: The electronic configuration of $N_2$ in terms of molecular orbital theory is $KK (\sigma 2s)^2 (\sigma^* 2s)^2 (\pi 2p_x)^2 (\pi 2p_y)^2 (\pi 2p_z)^2$.
Statement II: According to molecular orbital theory, the double bond in $C_2$ molecule consists of two $\pi$ bonds.
The correct answer is

Source for vitamin C and vitamin E respectively are:

Which one of the following complex ions is diamagnetic in nature?

The catalyst used in the preparation of high density polythene is