List of practice Questions

Arrange the following in increasing order of acidity.

Consider the following compound.

Correct order of their basicity is:

Which of the following is colorless?

Which among the following have a single unpaired electron?
N₂, 0₂, CN^-, O₂^-, C₂^2- , N^2-

S-I: Sulphur exists as S8 while oxygen exists as O2.
S-II: In oxygen, pπ-pπ bonding occurs while it is not effective in sulphur.

Consider the reaction between PbS and HNO₃.
PbS + HNO₃ →
Which of the following is not formed.

Which of the following statements is incorrect?

A ray of light passing through (1, 2) after reflecting on x-axis at point Q passes through R(3, 4). If S(h, k) is such that PQRS is a parallelogram, then find the value of hk².

A, B and C are given as
A = αî + 4j + 5k
B = 2î + 5j + 6k
C=A+B
|C| = | A - B |
Find the value of α and |C|² is:

If set A = { z: |z - 1| ≤ 1} and set B = { z: |z - 5i| ≤ |z - 5| }, if z = a + ib, where a, b ∈ I, then find the sum of modulus squares of A ∩ B.

What will be the remainder when (428)²⁰²⁴ is divided by 21?

If A is 3 x 3 matrix, det(3adj (2 adj A)) = 2^-13. 3^-10 and det(3adj (2A)) = 2^-m. 3^-n, then find 2m + 2n.d by 21?

If f(x) = 3ax³ + bx² + cx + 1 and f(1) = 41, f'(1) = 2 and f''(2)= 4, then find (a² + b² + c²).

If the domain of \(f(x)=\sin^{-1}(\frac{x-1}{2x+3})\) is R – (α, β] then find the value of 12αβ.

A = {2,4,6,8}, B = {3,7,6,9}. R: A × B → A × B such that (a₁, b₁) R (a₂, b₂) ⇔ a₁ + a₂ = b₁ + b₂ where (a₁, b₁) ∈ A, (a₂, b₂) ∈ B. Find the number of elements in the relation.2)= 4, then find (a² + b² + c²).

How do good animal husbandry practices benefit farmers?

The covalency and oxidation state respectively of boron in [BF₄]^-, are

Given below are two statements related to Ellingham diagram:
Statement-I: Ellingham diagrams can be constructed for formation of oxides, sulfides and halides of metals. 
Statement-II : It consists of plots of ΔfH° vs T for formation of oxides of elements. 
In the light of the above statements, choose the most appropriate answer from the options given below

Why was the ‘holy man’ who gave Santosh’s mother his blessings surprised?

In the alkane \( H_3C-CH_2-C(CH_3)_2-CH_2-CH(CH_3)_2\) , identify 1°,2°,3° carbon atoms and give the number of H atoms bonded to each one of these.

Given the first-order reaction with rate constant \( k \), calculate the rate of the reaction at a certain concentration of reactant \( [A] \). The rate constant \( k \) is given by the equation: \[ k = \frac{2.303}{t} \log \left( \frac{A_0}{A_t} \right) \]

Given the following information about a chemical reaction: - Change in Gibbs free energy (\( \Delta G \)) = \( -100 \, \text{kJ/mol} \)
- Change in enthalpy (\( \Delta H \)) = \( -150 \, \text{kJ/mol} \)
- Temperature (\( T \)) = \( 298 \, \text{K} \) Calculate the change in entropy (\( \Delta S \)) for the reaction. The relationship between Gibbs free energy (\( \Delta G \)), enthalpy (\( \Delta H \)), and entropy (\( \Delta S \)) is given by the equation: \[ \Delta G = \Delta H - T\Delta S \]