List of top Chemistry Questions asked in AP EAMCET

What are X and Y respectively in the following reactions? 

Which of the following sequence of reagents convert propene to 1-chloropropane?

What are A and B in the following reaction sequence? 

Styrene on reaction with reagent X gave Y, which on hydrolysis followed by oxidation gave Z. Z gives positive 2,4-DNP test but does not give iodoform test. What are X and Z respectively?

The product of which of the following reactions undergo hydrolysis by SN1 mechanism? 

Which of the following are general methods for the preparation of 1-iodopropane? 

Which of the following sweeteners use is limited to soft drinks?
Which of the following amino acids possess two chiral centres?
Which of the following represents the simplified version of nucleoside?
Which of the following polymerisation leads to the formation of neoprene?

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. \([Fe(CN)_6]^{3-}\) 
 

The transition metal with the highest melting point is: 

The ratio of Xe: \( \text{F}_2 \) required in the above reaction is: \[ \text{Xe}(g) + 2\text{F}_2(g) \xrightarrow{873 \, K, 7 \, \text{bar}} \text{XeF}_4(s) \]
The type of iron obtained from the Blast furnace in the extraction of iron is:

Match List I with List II and select the correct answer. 


 

Which of the following general reactions is an example for heterogeneous catalysis?

At 298 K, the value of \( -\frac{d[Br^-]}{dt} \) for the reaction \[ 5Br^- (aq) + BrO_3^- (aq) + 6H^+ (aq) \rightarrow 3Br_2 (aq) + 3H_2O (l) \] is \( x \) mol \( L^{-1} \) min\(^{-1}\). What is the rate (in mol \( L^{-1} \) min\(^{-1}\)) of this reaction?

The standard reduction potentials of \(2H^+ / H_2\), \(Cu^{2+} / Cu\), \(Zn^{2+} / Zn\), and \(NO_3^- / HNO_2\) are 0.0, +0.34, -0.76, and +0.97 V respectively. Observe the following reactions:
I. \( Zn + HCl \rightarrow \)
II. \( Cu + HCl \rightarrow \)
III. \( Cu + HNO_3 \rightarrow \)
Which reactions do not liberate \(H_2\) gas?

A non-volatile solute is dissolved in water. The \(\Delta T_f\) of the resultant solution is 0.052 K. What is the freezing point of the solution (in K)?
(Given: \( K_b \) of water = 0.52 K kg mol\(^{-1}\), \( K_f \) of water = 1.86 K kg mol\(^{-1}\), Freezing point of water = 273 K)
The mass % of urea solution is 6. The total weight of the solution is 1000 g. What is its concentration in mol L\(^{-1}\)? (Density of water = 1.0 g mL\(^{-1}\))
(Given: C = 12u, N = 14u, O = 16u, H = 1u)

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\(^{-1}\))

What is X in the following reaction? 

A mixture of substances A, B, C, D is subjected to column chromatography. The degree of adsorption is in the order of \(D>B>C>A\). The column is eluted with a suitable solvent. Identify the correct statement with respect to the separation of the mixture.

A metal catalyst (X) is used in the catalytic converter of automobiles. This prevents the release of gas Y into the atmosphere. What are X and Y respectively?

Which of the following are correct?
i. Basic structural unit of silicates is –\( \text{-RSiO-} \)
ii. Silicones are biocompatible
iii. Producer gas contains CO and \( \text{N}_2 \)