List of top Chemistry Questions asked in TS EAMCET

A metal crystallizes in bcc lattice with an edge length of 4 \AA. How many metal atoms can be placed in a two-dimensional open box of length 35 \AA and width 35 \AA?

At 293 K, HCl(g) is dissolved in cyclohexane. Identify the graph obtained for this solution (x-axis = mole fraction of HCl dissolved in cyclohexane; y-axis = partial pressure of HCl(g)).

At T(K), adsorption of a gas on 1 g of solid adsorbent follows Freundlich adsorption isotherm and is represented by the given graph. What is the value of \(k\)?

Three electrolytic cells P, Q and R containing aqueous solutions of \(Al(NO_3)_3\), \(AgNO_3\) and \(CuSO_4\) respectively are connected in series. A current of 1.5 A was passed until 1.45 g of Ag was deposited. Find the masses of Al and Cu deposited.

The rate constant of a first-order reaction becomes four times when temperature changes from 300 K to 320 K. Find activation energy.

Which of the following statements are correct? I. Distillation method is used for refining low boiling metals II. Copper matte contains CuS and FeS III. Froth flotation is used for concentration of sulphide ores

What are A and B in the following reactions? \[ C_3H_4 \xrightarrow[A]{H_2O} X \] \[ (CH_3)_2CHOH \xrightarrow[B]{} X \]

The substituent X increases electron density in benzene ring by hyperconjugation effect and substituent Y decreases electron density in benzene by resonance effect. X and Y respectively are

Observe the following reaction and identify the correct statements about X \[ C_4H_8 \xrightarrow[(ii)\ Zn,H_2O]{(i)\ O_3} Ethanal \] I. It does not exhibit cis/trans isomerism II. It adds water in presence of dilute $H_2SO_4$ to give secondary alcohol III. It is obtained as major product in the reaction of secondary butyl chloride with alcoholic KOH

Given below are two statements: Statement-I: A mixture of aniline and chloroform can be separated by differential extraction. Statement-II: Aniline can be separated from a mixture of aniline and water by steam distillation.

Which of the following does not exist?

Consider the following reactions \[ Al(s)+HCl(aq)\rightarrow X+A\uparrow \] \[ Al(s)+NaOH(aq)\rightarrow Y+B\uparrow \] Which of the following is are correct? I. Y is water soluble II. X is not soluble in water III. Both A and B are same

The correct order of hydration enthalpy of ions of Li, Na, Mg, Ca is

Dihydrogen reacted with elements of atomic number 15, 19 and 40 to form respective hydrides. The type of these hydrides respectively are

The pair of s-block metals which do not form solid hydrogen carbonates is

A sample of water has no fluoride (F) ions in it. What is the maximum limit (in $mg~L^{-1}$) of soluble fluoride salt to be added to this water to convert it into safe drinking water?

Which one of the following molecules has maximum number of lone pairs of electrons?

Identify the reaction in which the hybridization of the underlined atom is changed

What is the enthalpy change (in $kJ~mol^{-1}$) for the following reaction? \[ CCl_4(g)\rightarrow C(g)+4Cl(g) \]

At $T(K)$ the kinetic energy of one mole of an ideal gas is 3735 J. If its pressure is 1 atm, the volume of gas is ($R = 8.3~J~mol^{-1}K^{-1}$)

What is the pH of $10^{-2}M$ aqueous solution of aniline at 298 K?}

Observe the following reaction and identify the correct relationships from the following \[ xP_4(s)+yOH^{-}(aq)+zH_2O(l)\rightarrow aPH_3(g)+bH_2PO_2^{-}(aq) \] I. $x+y+z=6$ II. $x=a$ III. $x+y+z=3+a+b$ IV. $a-z+b=1$

In a cathode ray experiment hydrogen gas was subjected to very low pressure and high voltage. The $\frac{e}{m}$ of cathode rays liberated was $-x~C~kg^{-1}$. In the second experiment helium gas was used under the same experimental conditions. What is the $\frac{e}{m}$ $(in~C~kg^{-1})$ of cathode rays liberated in the second experiment?}

The atomic numbers of four elements A, D, E, G are 4, 7, 8, 12 respectively. The decreasing order of electronegativity of these elements is

Consider the following ions

. The largest cation and largest anion are respectively}