List of practice Questions

Observe the following statements about dry cell:
It is a primary battery.
Zinc vessel acts as cathode.
A paste of moist $ \text{NH}_4\text{Cl}, \text{MnO}_2 $, and $ \text{ZnCl}_2 $ is present between two electrodes.
The potential of this cell is 1.5 V.

The formula of Ammonium phosphomolybdate is

Calculate the sum of magnetic moments (in Bohr Magnetons, B.M.) of the complexes: \[ [\mathrm{MnCl}_6]^{3-} \quad \text{and} \quad [\mathrm{Mn(CN)}_6]^{3-} \]

Match the following

The correct answer is:

Match the following:

List-I (Complex)	List-II (Isomerism)
A) [Co(NH₃)₅Br]SO₄	V) Ionization
B) [Co(en)₃]³⁺	I) Optical
C) [Co(NH₃)₅(NO₂)]²⁺	II) Linkage
D) [Co(NH₃)₃Cl₃]	III) Geometrical

In which of the following, complex ions are not in correct order with respect to their magnitude of crystal field splitting?

Identify the complex ion with spin only magnetic moment of 4.90 BM.

The coordination number and geometry of $[\mathrm{Ni(CN)_4]^{2-}$ and $[\mathrm{NiCl_4}]^{2-}$ are respectively:}

Which of the following compounds will show geometrical isomerism?

The IUPAC name of $[\mathrm{Co(NH_3)_5Cl}]\mathrm{SO_4}$ is:

The number of distinct pairs of integers $(x, y)$ satisfying the inequalities $x>y \ge 3$ and $x + y<14$ is:

For any natural number $k$, let $a_k = 3^k$. The smallest natural number $m$ for which \[ (a_1)^1 \times (a_2)^2 \times \dots \times (a_{20})^{20} \;<\; a_{21} \times a_{22} \times \dots \times a_{20+m} \] is:

Which is a Lewis acid?

The conjugate base of phosphorus acid is $ x $. The conjugate base of oleum is $ y $. What are $ x $ and $ y $, respectively?

Orthophosphorus acid on disproportionation gives PH$_3$, and another oxoacid of phosphorus X. The basicity of X is

The carboxylic acid with highest $pK_a$ and lowest $pK_a$ values of the following respectively are:

The volume (in mL) of 10 volume $H_2O_2$ solution required to completely react with 200 mL of 0.4 M $KMnO_4$ solution in acidic medium is

4 mL of 'X volume' $ \text{H}_2\text{O}_2 $ on heating gives 80 mL of oxygen at STP. The value of X is

Which set of elements form electron-precise hydrides?

Which of the following property is less for D₂O than H₂O?

Identify the correct statements from the following
I.
All alkaline earth metals give hydrides on heating with hydrogen.
II.
Calcium hydroxide is used to purify sugar.
III.
$ \mathrm{BeCl_2} $ is a dimer in gaseous phase.

Write $ \cot^{-1}\left\{\frac{1}{\sqrt{x^2-1}}\right\}; x>1 $ in the simplest form.

If $a - 6b + 6c = 4$ and $6a + 3b - 3c = 50$, where $a, b$ and $c$ are real numbers, the value of $2a + 3b - 3c$ is:

Shown below is an image of multiple footwear items. How many complete pairs are there?

Shown below is a configuration of an isosceles triangle sliced into eight parts, each of the same height. While the first and last parts of the triangle remain fixed, the remaining parts have been displaced horizontally, by multiples of 0.5 cm. What is the area of the grey portion?