BITSAT 2025

The major product of the reaction between $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{ONa}$ and $\left(\mathrm{CH}_3\right)_3 \mathrm{CCl}$ in ethanol is

Identify the compound that undergoes self-aldol condensation in the presence of cold dilute alkali, forming a $\beta$-hydroxy aldehyde:

\(\text { The major product formed in the given reaction is }\)

\(\text { The product } X \text { and } Y \text { respectively are }\)

The degeneracy of a hydrogen atom whose energy equals $-R_{\mathrm{H}}$ / 16

If the de-Broglie wavelength of a particle is equal to $10 \sqrt{h / m}$, then what is the ratio of its speed to mass?

Angular stomatitis and cracked lips are caused by deficiency of

A tetrapeptide is formed from four amino acids: alanine, serine, glycine, and valine. The C-terminal is fixed as alanine, and the N-terminal amino acid is chiral. Determine the number of possible sequences.

The central atom shows $d$-orbital participation in hybridisation in

For the reaction,
\(2 \mathrm{SO}_2+\mathrm{O}_2 \rightleftharpoons 2 \mathrm{SO}_3\)
if the rate of disappearance of $\mathrm{O}_2$ is $2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$, determine the rate of appearance o...

If for a first-order reaction, the frequency factor $A=4 \times 10^{13} \mathrm{~s}^{-1}$ and activation energy $E_a=98.6 \mathrm{~kJ} \mathrm{~mol}^{-1}$, at what temperature will the half-life be 10 minutes?

\(\text { The product } Z \text { formed in the given reaction is }\)

Match List-I with List-II for oxidation number of central metal atom.
$$ \begin{array}{llcc} \hline \begin{array}{c} \text { List-I } \\ (\text { Complex }) \end{array} & & \begin{array}{c} \text { List-II } \\ \text { (Oxidation number) }...

The hybridisation and geometry of the complex $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ are

Among the following transition metal ions, how many have the same number of unpaired electrons, and thus approximately the same magnetic moment?
(i) $\mathrm{Cr}^{3+}$
(ii) $\mathrm{Fe}^{3+}$
(iii) $\mathrm{Mn}^{2+}$
(iv) $\mathrm{Co}^{2+}$...

The $\mathrm{Fe}^{3+}$ ion, having five unpaired electrons, shows a spin-only magnetic moment closest to

A current of 4.0 A is passed through 0.5 L of 0.2 M NaCl solution for 1200 s . Calculate the pH of the solution after electrolysis.

The approximate time duration in hours to electroplate 20 g of calcium from molten calcium chloride using a current of 4 A is (Atomic mass of $\mathrm{Ca}=40$ )

Intramolecular hydrogen bonding is predominantly observed in

Among aqueous 1 N solutions, the pH of HCl , $\mathrm{HNO}_2$ and $\mathrm{CH}_3 \mathrm{COOH}$ follows the order

30 mL of 0.1 M acetic acid is mixed with 60 mL of 0.1 M sodium acetate. If $K_a=1.8 \times 10^{-5}$ what will be the pH of the solution?

How many geometrical (cis-trans) isomers are possible for the compound?
\(\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_2\)

A 1 molar aqueous solution of magnesium nitrate is $40 \%$ dissociated at 298 K . Calculate the osmotic pressure of the solution. $\left(R=0.0821 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\right)$

0.1 m of urea and 0.05 m of $\mathrm{CaCl}_2$ are dissolved separately in equal volumes of water. Which solution will have higher elevation in boiling point?

Electron affinity is maximum when

The ionic radii of $\mathrm{N}^{3-}, \mathrm{O}^{2-}$ and $\mathrm{F}^{-}$follow the trend

Balance the following redox reaction in acidic medium and determine the stoichiometric coefficient of $\mathrm{H}_2 \mathrm{O}$ in the final balanced equation.
$$ \mathrm{MnO}_4^{-}(a q)+\mathrm{Fe}^{2+}(a q) \longrightarrow \mathrm{Mn}^{2+...

Calculate the volume of $M / 10 \mathrm{KMnO}_4$ needed to react with 20 mL of $M / 2 \mathrm{FeSO}_4$ in acidic medium.

The bond dissociation energies of $A_2, B_2$ and $A B$ are in the ratio $1: 4: 2$. If $\Delta H$ for formation of $A B$ from $A_2$ and $B_2$ is $-100 \mathrm{~kJ} / \mathrm{mol}$, calculate the bond dissociation energy of $B_2$.

In a cyclic $p V$ process forming $A$ square loop from $(p=1 \mathrm{~atm}, V=2 \mathrm{~L})$ to $(p=3 \mathrm{~atm}$, $V=4 \mathrm{~L})$, Then, the net heat absorbed by the gas is

Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term.
$25: 18:: 37: ?:: 49: 36$

Select the option that is related to the third word in the same way as the second word is related to the first word.
Pressure : Barometer :: Electricity : ?

Select the set in which the numbers are related in the same way as are the numbers of the following sets.
\((112,327,215),(98,254,156)\)

In a certain code language, 'SPAM' is coded as ' 36 ' and 'JUG' is coded as ' 27 '. How will 'FROCK' be coded in that language?

$\mathrm{Q}+\mathrm{J}$ means " Q is the Husband of J "
Q - J means "Q is the Father of J"
$\mathrm{Q} \times \mathrm{J}$ means " Q is the Mother of J "
Q * J means " Q is the Daughter of J "
If $\mathrm{D} * \mathrm{~V}+\mathrm{B} \times \...

Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the odd letter-cluster.

Stanley starts cycling from point $A$. He cycles $x$ km towards the West and then turns right and cycles 3 km . He again turns right and cycles for $x+1 \mathrm{~km}$. He again turns right and cycles for $2 x+1 \mathrm{~km}$. He takes a fin...

Select the option in which the given figure is embedded (Rotation is not allowed).

When the following figure is folded to form a cube, which letter-number will be on the face opposite to the face showing the letter-number ‘Al’?
(The elements are shown to indicate the sides only.)

Select the option figure in which the given figure is embedded as its part (Rotation is not allowed.)

Six students Meera, Jigyasa, Tarun, Naina, Shambhavi and Avni are sitting around a circular table facing the centre (Not necessarily in the same order). Shambhavi is an immediate neighbour of both Jigyasa and Avni. Tarun is sitting third to...

Two statements are given followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts,
decide which of the conclusions logically follow(s) from the s...

A paper is folded and cut as shown below. How will it appear when unfolded?

Six characters A, B, C, 1, 2 and 3 are written on different faces of a dice. Two positions of this dice are shown in the figure. Find the character on the face opposite to $\boldsymbol{C}$.

In a certain code language, 'BLOCK' is coded as LBCON and 'CABIN' is coded as ACIBQ. How will 'SUITE' be coded in the same language?

Which of the following numbers will replace the question mark (?) in the given series?
\(69,65,67,63, ?, 61\)

Which of the following numbers will replace the question mark (?) in the given series?
$5,20,60,240,720$, ?

Which of the following numbers will replace the question mark (?) in the given series? 270, 241, 212, ?, 154, 125

Which figure from the given options would replace the question mark (?) if the following figure series were to be continued?

Which letter-cluster will replace the question mark (?) to complete the given series?
BRCQ, EPFO, ?, KLLK, NJOI