List of top Questions asked in TS EAMCET

A substance has a density of \( 2 \, \text{g cm}^{-3} \). It crystallizes in the fcc crystal with an edge length of 600 pm. The molar mass of the substance (in \( \text{g mol}^{-1} \)) is (\( N_A = 6 \times 10^{23} \, \text{mol}^{-1} \))
Sodium metal crystallises in a body centred cubic lattice with edge length of x Å. If the radius of sodium atom is 1.86 Å, the value of x is
What is the pH of 0.365% (w/V) HCl aqueous solution? (HCl=36.5 u), (log 0.365=−0.4377)
The radius of second orbit of hydrogen atom is same as that of orbit (n) of an ion (x). n and x are respectively
Xenon hexafluoride on partial hydrolysis gives 'X' and HF. The shape of 'X' is
Identify the correct statements about lanthanoids
I. \(\text{Ce}^{4+}\) and \(\text{Tb}^{4+}\) act as oxidising agents
II. \(\text{Eu}^{2+}\) and \(\text{Yb}^{2+}\) act as oxidising agents
III. Mischmetal is an alloy of 95% iron and 5% lanthanoid metal
IV. \(\text{La}^{3+}\) and \(\text{Ce}^{4+}\) are diamagnetic in nature
The ore of which metal is concentrated by leaching?
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
The correct statements about the products B and C in the given reactions are (Ethanol reacts with HCl/Anhy ZnCl$_2$ to give A. A reacts with ethanolic AgCN to give B (Minor) and C (Major)). I. B and C are functional isomers II. With H$_2$|Catalyst B gives 1$^\circ$ amine and C gives 2$^\circ$ amine III. B on acid hydrolysis gives formic acid and C gives C$_3$H$_6$O$_2$ IV. C forms isocyanate with HgO
In which of the following, metal is not correctly matched with its refining process?
Which of the following is not correct about Freundlich adsorption isotherm?
R\(\rightarrow\)P is a first order reaction. For this reaction a graph of ln[R] (on y-axis) and time (on x-axis) gave a straight line with negative slope. The intercept on y-axis is equal to (k=rate constant)
The chemical X is used in the prevention of heart attack. The structure of X is
The atomic numbers of the elements X, Y, Z are $a, a+1, a+2$ respectively. Z is an alkali metal. The nature of bonding in the compound formed by X and Z is
Which of the following statements is not correct?
Identify the product 'P' in the given reaction sequence
The product 'C' in the given reaction sequence is
In Hydrogen atom, an electron jumped from an orbit of radius 2592.1 pm to another orbit of radius 211.6 pm. What is the energy difference (in J) between these two states?
Which of the following reactions is an example of Clemmensen reduction?
Observe the following statements.
Statement - I: The boiling point of 0.1 M urea solution is less than that of 0.1 M KCl solution.
Statement - II: Elevation of boiling point is inversely proportional to molar mass of solute.
The correct answer is
Elements A and B form two non-volatile compounds (AB$_2$ and AB$_4$). When 1 g of AB$_2$ is added to 20 g of C$_6$H$_6$ (molar mass =78 gmol$^{-1}$) the freezing point of C$_6$H$_6$ is lowered by 2.3 K. When 1 g of AB$_4$ is added to 20 g of C$_6$H$_6$, the freezing point of C$_6$H$_6$ was lowered by 1.3 K. The atomic masses of A and B are respectively (K$_f$(C$_6$H$_6$)=5.1 K kg mol$^{-1}$)
Match the following The correct answer is
The electron in hydrogen atom undergoes transition from higher orbits to an orbit of radius 476.1 pm. This transition corresponds to which of the following series?
Which of the following is used as stabilizer for H$_2$O$_2$?
Which of the following is not related to extraction of copper?