List of practice Questions

All the letters of the word "GTWENTY" are written in all possible ways with or without meaning, and these words are arranged as in a dictionary. The serial number of the word "GTWENTY" is:

Given below are two statements:
Statement I: The electronegativity of group 14 elements from Si to Pb gradually decreases.
Statement II: Group 14 contains non-metallic, metallic, as well as metalloid elements.
In the light of the above statements, choose the most appropriate from the options given below:

Find product P of the following reaction-

A stationary hydrogen atom deexcites from first excited state to ground state. Find recoil speed of hydrogen atom up to nearest integer value.
(mass of hydrogen atom = $1.8 \times 10^{-27}$ $kg$)

A body starts moving from rest with constant acceleration and covers displacement $S_1$ in the first $(p - 1)$ seconds and $S_2$ in the first $p$ seconds. The displacement $S_1 + S_2$ will be made in time:

For a reaction taking place in three steps at the same temperature, the overall rate constant $ K = \frac{K_1 K_2}{K_3} $. If $ E_{a1} $, $ E_{a2} $, and $ E_{a3} $ are 40, 50, and 60 kJ/mol respectively, the overall $ E_a $ is ____ kJ/mol.

KMnO₄ decomposes on heating at 513 K to form O₂ along with

Calculate the Molarity of a Solution having density = $1.5$ $g/ml$. $\%(w/w)$ of Solute is $36\%$ and Molecular weight of Solute is $36$ $g/mol$

Alkaline KMnO4 Oxidised iodide to a particular product (A). Determine the oxidation state of iodine in the compound (A).

In the following reactions, find the product A and B

The major product formed in the following reaction is-

Energy difference between actual structure and its most stable resonating structure having least energy is called

The interaction between π bond and lone pair of electrons present on an adjacent atom is responsible for

A block of mass 100 kg slides over a distance of 10 m on a horizontal surface. If the coefficient of friction between the surfaces is 0.4, then the work done against friction (in J) is:

For $ 0 < a < 1 $, the value of the integral \[ \int_{0}^{\frac{\pi}{2}} \frac{dx}{1 - 2a \cos x + a^2} \] is:

The 20^th term from the end of the progression \[ 20, 19, \frac{1}{4}, \frac{1}{2}, \frac{3}{4}, \ldots, -129 \frac{1}{4} \] is:

If $\frac{dy}{dx}$= $\frac{(x+y-2)}{(x-y)}$, and y(0) = 2, find y(2)

The integral $$ \int \frac{x^8 - x^2}{(x^{12} + 3x^6 + 1) \tan^{-1}\left( \frac{x^3 + 1}{x^3} \right)} \, dx $$ is equal to:

Coefficient of x²⁰¹² in (1-x)²⁰⁰⁸(1+x+x²)²⁰⁰⁷ is equal to ___

Identify the following species in which $d^2sp^3$ hybridization is shown by the central atom.

Phenolic group can be identified by a positive

The quantity which changes with temperature:

Which of the following is strongest Bronsted base?

A particle performing simple harmonic motion is such that its amplitude is 4 m and speed of particle at mean position is 10 m/s. Find the distance of particle from mean position where velocity becomes 5 m/s.

If the refractive index of the material of a prism is $cot\bigg(\frac{A}{2}\bigg)$, where A is the angle of the prism, then the angle of minimum deviation will be: