List of top Questions asked in TS EAMCET

The major product 'Y' in the given sequence of reactions is:

Arrange the following halides in decreasing order of their reactivity towards dehydrohalogenation: 

In the following reaction sequence, what are X and Y respectively? 

Identify 'Z' in the following sequence of reactions: 

The standard enthalpy of formation (\(\Delta H_f^\circ\)) of ammonia is -46.2 kJ/mol. What is the \(\Delta H_f^\circ\) of the following reaction? \[ N_2(g) + 3H_2(g) \rightarrow 2NH_3(g) \]
Which of the following statements are not correct? i) \( \text{BeO has rock-salt structure} \)
ii) \( \text{BeSO}_4 \text{ is readily soluble in water} \)
iii) \( \text{The maximum coordination number of beryllium is four} \)
iv) \( \text{Be(OH)}_2 \text{ is basic in nature} \)
The diffraction pattern of a crystalline solid gave a peak at \( 2\theta = 60^\circ \). Its ‘d’ value is 1.54 Å. What is the wavelength (in cm) of X-rays used?
The wavenumbers of the first three emission lines of Lyman series of hydrogen spectrum are respectively \( \nu_1, \nu_2, \nu_3 \). Similarly, the wavenumbers of first three emission lines of Balmer series of hydrogen spectrum are \( \nu_4, \nu_5, \nu_6 \), respectively. Identify the correct relationship:
Identify the number of molecules having permanent dipole moment from the following: $$ CCl_4, NF_3, H_2S, HBr, SF_4, SiF_4, XeF_4, BeCl_2, SnCl_2, BrF_5, SO_2 $$
The number average molecular weight (M\(_n\)) of a polymer is 1500. In this polymer, 800 molecules of molar mass 1000, 100 molecules of molar mass 2000 and x molecules of molar mass 5000 are present. What is the value of x?

Arrange the following in the correct order of their boiling points: 

At what temperature will the RMS velocity of sulfur dioxide molecules at 400 K be the same as the most probable velocity of oxygen molecules?
The molecular formula of a crystal is \( AB_2O_4 \). Oxygen atoms form a close-packed lattice. Atoms of A occupy \( x\% \) of tetrahedral voids and atoms of B occupy \( y\% \) of octahedral voids. \( x \) and \( y \) are respectively: \flushleft
Among the following, the molecule in which all atoms obey the octet rule is

What are X and Y respectively in the following reactions? 

Identify the pair of elements in which the number of s-electrons to p-electrons ratio is 2:3:

What are \( X \) and \( Y \) respectively in the following reactions?

X → CO B2H6 → NaH → (C2H5)2O Y

Options:

  • (1) BH3, 2CO; NaBO2
  • (2) BH3, CO; NaBH4
  • (3) BH3, CO; NaBO2
  • (4) BH3, CO; Na2B4O7
Identify the set of molecules which act as bleaching agents only by oxidation

The following orbital energies (\(E\)) are compared. Identify the correct sets 

(I) E2(H) = E2(H)
(II) E3(H) = E3(He)
(III) E2s(H) < E2s(He)
(IV) E3s(He) < E3s(H)

In which of the following options, the IUPAC name is not correctly matched with the structure of the compound?
The products formed in the reaction of \( BeCl_2 \) with \( LiAlH_4 \) are
Observe the following compounds/ions: \[ H_3BO_3, \, [B(OH)_4]^-, \, BH_4^-, \, [BCI_3 \cdot NH_3], \, SiO_4^{2-} \] The number of compounds/ions with tetrahedral shape is:

What is ‘Y’ in the following set of reactions?

Match the following substances with their respective equivalent weights: 

Phosphodiester linkage that joins nucleotides together is present between which carbons of pentose sugar?