List of top Chemistry Questions asked in TS EAMCET

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

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

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:

What are X and Y respectively in the following reactions?

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

Which of the following is correct?

Identify the set which is not correctly matched in the following:

Identify the major product \((P)\) in the following reaction sequence: \[ (\text{CH}_3)_3\text{CBr} \xrightarrow[\Delta]{\text{Alcoholic KOH}} X \xrightarrow{\text{HBr}} P \]

The correct formula of borax is Na\(_2\)[B\(_4\)O\(_5\)(OH)\(_x\)]·yH\(_2\)O. The sum of \(x\) and \(y\) is:

Two statements are given below: Statement I: Molten NaCl is electrolysed using Pt electrodes. \( Cl_2 \) is liberated at the anode.
Statement II: Aqueous CuSO\(_4\) is electrolysed using Pt electrodes. \( O_2 \) is liberated at the cathode. The correct answer is:

Two statements are given below: Statement I: In H atom, the energy of 2s and 2p orbitals is the same.
Statement II: In He atom, the energy of 2s and 2p orbitals is the same.

The uncertainty in the determination of the position of a small ball of mass 10 g is \(10^{-33}\) m. With what \% of accuracy can its speed be measured, if it has a speed of 52.5 m s\(^{-1}\)?

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:

The set containing the elements with positive electron gain enthalpies is?

Match the following: