List of top Chemistry Questions asked in AP EAMCET

The density of \(\beta\)-Fe is 7.6 g/cm\(^3\). It crystallizes in a cubic lattice with \( a = 290 \) pm.
What is the value of \( Z \)? (\( Fe = 56 \) g/mol, \( N_A = 6.022 \times 10^{23} \) mol\(^{-1}\))

The equilibrium constant for the dissociation of HI at 773 K is:

200 g of 20\% w/w urea solution is mixed with 400 g of 40\% w/w urea solution. What is the weight percentage (w/w \%) of resultant solution?

At 27°C, the degree of dissociation of HA (weak acid) in 0.5 M of its solution is 1%. The concentrations of H\(_3\)O\(^+\), A\(^-\), and HA at equilibrium (in mol L\(^{-1}\)) are respectively:

2.644 g of metal (M) was deposited when 8040 coulombs of electricity was passed through molten MF\(_2\) salt. What is the atomic mass of M? (F = 96500 C mol\(^{-1}\))

At 300 K, \( \Delta_r G^\circ \) for the reaction \( A(g) \rightleftharpoons B(g) \) is \( -11.5 \) kJ mol\(^{-1}\). The equilibrium constant at 300 K is approximately: \((R = 8.314 \text{ J mol}^{-1} \text{ K}^{-1})\)

The sum of number of angular nodes and radial nodes for 4d orbital is:

p-Methyl benzene nitrile can be prepared from which of the following?

\( x \) g of an organic compound was analysed by Kjeldahl’s method for the estimation of nitrogen. The ammonia gas evolved from the compound was passed into 100 mL of 0.2 M H\(_2\)SO\(_4\). The excess of acid required 40 mL of 0.5 M NaOH solution for complete neutralisation. What is \( x \) when the percentage of nitrogen in it is 46%?

What is Y in the following reaction sequence?

Arrange the following in the increasing order of number of unpaired electrons present in the central metal ion:
I. \([MnCl_6]^{4-}\)
II. \([FeF_6]^{3-}\)
III. \([Mn(CN)_6]^{3-}\)
IV. \([Fe(CN)_6]^{3-}\)

Identify the incorrect statement:

The de Broglie wavelength of a particle of mass 1 mg moving with a velocity of \( 10 \) ms\(^{-1}\) is (h = \( 6.63 \times 10^{-34} \) Js)

Identify the Swarts reaction from the following:

Correct set of four quantum numbers for the valence electron of strontium (Z = 38) is

At \( T(K) \), the \( P, V \) and \( u_{{rms}} \) of 1 mole of an ideal gas were measured. The following graph is obtained. What is its slope (\( m \))? (x-axis = \( PV \); y-axis = \( u_{{rms}}^2 \); \( M \) = Molar mass) \includegraphics[]{126.png}

The energy of the third orbit of \( {Li}^{2+} \) ion (in J) is:

The number of \( d \) electrons in Fe is equal to which of the following?
(i) Total number of \( s \)-electrons of Mg
(ii) Total number of \( p \)-electrons of Cl
(iii) Total number of \( p \)-electrons of Ne

The correct order of atomic radii of given elements is

Which of the following orders are correct regarding their covalent character?
(i) \( \text{KF} < \text{KI} \)
(ii) \( \text{LiF} < \text{KF} \)
(iii) \( \text{SnCl}_2 < \text{SnCl}_4 \)
(iv) \( \text{NaCl} < \text{CuCl} \)

Observe the following sets:

Which of the above sets are correctly matched?

The RMS velocity (\(v_{{rms}}\)) of one mole of an ideal gas was measured at different temperatures and the following graph is obtained. What is the slope (m) of the straight line?

Two statements are given below:
Statement I: Viscosity of liquid decreases with increase in temperature.
Statement II: The units of viscosity coefficient are Pascal sec. The correct answer is:

0.1 mole of potassium permanganate was heated at 300°C. What is the weight (in g) of the residue?

Identify the correct statements from the following: