AP EAPCET 2021 - 19th August Morning Shift

In the following reaction sequence, identify
product ‘Q’ and reagent ‘R’.

The total number of products formed in the
following reaction sequence is
$$\begin{gathered}\mathrm{CH}_3 \mathrm{COCl} \stackrel{\text { (i) }\left(\mathrm{CH}_3\right)_3 \mathrm{Cd}}{\longrightarrow}(P) \\ (P)+\mathrm{CH}_3 \mathrm{CHO} \...

If two particles A and B are moving with the
same velocity, but wavelength of A is found
to be double than that of B. Which of the
following statement is correct?

The spectrum of helium is expected to be similar to that of

On the basis of Bohr’s model, the radius of
the 3rd orbit is

Identify the product of the following
reaction.

During the action of enzyme ‘zymase’
glucose is converted into .............., with the
liberation of carbon dioxide gas.

Given that ionisation potential and electron
gain enthalpy of chlorine are 13eV and 4 eV
respectively. The electronegativity of chlorine
on Mulliken scale, approximately equals to

Which of the following will have maximum
dipole moment?

In which of the following molecules/ions, the central atom is sp\(^2\) hybridised?
BF\(_3\), NO\(_2^-\), NH\(_2^-\) and H\(_2\)O

For which molecules among the following,
the resultant dipole moment (\(\propto\)) \(\ne\) 0 ?

Standard entropies of \(X_2, Y_2\) and \(X Y_3\) are 60, 40 and \(50 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\) respectively. At what temperature, the following reaction will be at equilibrium? [given: \(\Delta H \Upsilon=-30 \mathrm{~kJ}\)]
$$\...

For the reaction \(\mathrm{SO}_2(g)+\frac{1}{2} \mathrm{O}_2(g) \rightleftharpoons \mathrm{SO}_3(g)\), the percentage yield of product at different pressure is shown in the figure. Then, which among the following is true?

Which among the following denotes the correct relationship between \(K_p\) and \(K_c\) for the reaction, \(2 A(g) \rightleftharpoons B(g)+C(g)\)

If the rate constant for a first order reaction is \(2.303 \times 10^{-3} \mathrm{~s}^{-1}\). Find the time required to reduce \(4 \mathrm{~g}\) of the reactant to \(0.2 \mathrm{~g}\).

What is coordination number of the metal in \(\mathrm{{[Co{(en)_2}C{l_2}]^{2 + }}}\) ?

To which group of the periodic table does an element having electronic configuration [Ar] 3d\(^5\) 4s\(^2\) belong?

Assertion (A) Sodium acetate on Kolbe’s
electrolysis gives ethane.
Reason (R) Methyl free radical is formed at
cathode.

When a current of 10 A is passes through
molten AlCl\(_3\) for 1.608 minutes. The mass of
Al deposited will be
[Atomic mass of Al = 27 g]

The molar conductivities \(\left(\lambda_{\mathrm{m}}^{\Upsilon}\right)\) at infinite dilution of \(\mathrm{KBr}, \mathrm{HBr}\) and \(\mathrm{KNH}_2\) are 120.5, 420.6 and \(90.48 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\) respectivel...

Green chemistry refers to reactions which

The following effect is known as

The number of optical isomers possible for
2-bromo-3-chloro butane are

When difference in boiling points of two
liquids is too small, then the separation is
carried out by

Which of the following will form an ideal solution?

The molal elevation constant is the ratio of
elevation in boiling point to

A compound A is used in paints instead of
salts of lead. Compound A is obtained when a
white compound B is strongly heated.
Compound B is insoluble in water but
dissolves in NaOH solution forming a
solution of compound C. The compound A on
...

Identify (P) and (Q) in the following reaction.

Match the following compounds with their corresponding physical properties.

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ove...

Which of the following represents the correct
order of increasing electron gain enthalpy
with negative sign for the elements?
1. Nitrogen (N) 2. Phosphorus (P) 3. Chlorine (Cl) 4. Fluorine (F)

In Lassaigne’s test for halogens, it is
necessary to remove X and Y from the
sodium fusion extract, if nitrogen and
sulphur are present. This is done by boiling
the extract with Z. Identify X, Y and Z.

Which among the following species acts as a
self-indicator?

Which metal oxide among the following
gives H\(_2\)O\(_2\) on treatment with dilute acid?

Assertion (A) K, Rb and Cs form
superoxides.
Reason (R) The stability of superoxides
increases from K to Cs due to decrease in
lattice energy.

When borax is dissolved in water, it gives an alkaline solution. The alkaline solution consists the following products

When 20 g of CaCO\(_3\) is treated with 20 g of HCl, the mass of CO\(_2\) formed would be

Which of the following graphs correctly
represents Boyle’s Law?

The density of an ideal gas can be given by
........, where p, V, M, T and R respectively
denote pressure, volume, molar-mass,
temperature and universal gas constant.

A plot of \(\log (x / m)\) versus \(\log (p)\) for adsorption of a gas on a solid gives a straight line with a slope of

If a chemical reaction is known to be
non-spontaneous at 298 K but spontaneous
at 350 K, then which among the following
conditions is true for the reaction?