List of top Questions asked in AP EAMCET

The sequence of reagents required to convert ethyl bromide to propanal is:
What are X, Y, Z in the following reaction sequence respectively?
Gattermann-Koch reaction
Toluene on reaction with the reagent X gave Y, which dissolves in NaHCO3 _3 and when reacted with Br2 _2 /Fe gave Z. What are X and Z?
p-Methyl benzene nitrile can be prepared from which of the following?
A Grignard reagent (X) on reaction with carbonyl compound (Y) followed by hydrolysis gave Z. Z reacts with conc. HCl at room temperature. X and Y respectively are
Which of the following acts as intracellular messengers?
What are X and Y respectively in the following reactions?
bromination under UV light
Which of the following is incorrect?
At 300 K, the Ecell⊖ E^\ominus_{cell} of A(s)+B2+(aq)⇌A2+(aq)+B(s) \text{A(s)} + \text{B}^{2+}(\text{aq}) \rightleftharpoons \text{A}^{2+}(\text{aq}) + \text{B(s)} is 1.0 V. If ΔrS⊖ \Delta_r S^\ominus of this reaction is 100 J K−1^{-1}, what is ΔrH⊖ \Delta_r H^\ominus (in kJ mol−1^{-1}) of this reaction?
(F = 96500 C mol−1^{-1})
The critical temperature of A, B, C, D gases are 190 K, 630 K, 261 K, 400 K respectively. The quantity of gas adsorbed per gram of charcoal at same pressure is least for the gas
Identify the correct sets:
(i) Boron fibres- bulletproof vest
(ii) Metal borides- protective shields
(iii) Borax- glass wool
The number of alicyclic compounds from the following is: Cyclohexene, Anisole, Pyridine, Tetrahydrofuran, Biphenyl
Which of the following is a lung irritant?
Which of the following, on thermal decomposition, form both acidic and basic oxides along with O2_2?
(i) NaNO3
(ii) Ca(NO3)2
(iii) Be(NO3)2
(iv) LiNO3
Identify the set of molecules in which the central atom has only one lone pair of electrons in their valence shells:
A 10 L vessel contains 1 mole of an ideal gas with pressure of P(atm) and temperature of T(K). The vessel is divided into two equal parts. The pressure (in atm) and temperature (in K) in each part is respectively.
The rms velocity (urms u_{\text{rms}} ), mean velocity (uav u_{\text{av}} ), and most probable velocity (ump u_{\text{mp}} ) of a gas differ from each other at a given temperature. Which of the following ratios regarding them is correct?
The following configuration of gates is equivalent to:
configuration of gates
An alternating current is given by i=(3sin⁡ωt+4cos⁡ωt) i = (3 \sin \omega t + 4 \cos \omega t) A. The rms current will be:
Energy levels A, B, and C of a certain atom correspond to increasing values of energy, i.e., EA<EB<EC E_A<E_B<E_C . If λ1,λ2, \lambda_1, \lambda_2, and λ3 \lambda_3 are the wavelengths of a photon corresponding to the transitions shown, then:
Energy levels A, B, and C
A charge ‘q’ is spread uniformly over an isolated ring of radius ‘R’. The ring is rotated about its natural axis with angular speed ω \omega . The magnetic dipole moment of the ring is:
125 identical charged small spheres coalesce to form a big charged sphere. If the electric potential on each small sphere is 60 mV, then the electric potential on the bigger sphere formed is:
The frequency of fifth harmonic of a closed pipe is equal to the frequency of third harmonic of an open pipe. If the length of the open pipe is 72 cm, then the length of the closed pipe is:
A gas absorbs 18 J of heat and work done on the gas is 12 J. Then the change in internal energy of the gas is:
The ratio of the molar specific heat capacities of monatomic and diatomic gases at constant pressure is: