The compound that is white in color is
- ammonium sulphide
- lead sulphate
- lead iodide
- ammonium arsinomolybdate
The Correct Option is B
Approach Solution - 1
To determine which compound is white in color, we need to examine the properties of each option. Let's evaluate them one by one:
- Ammonium sulphide: This compound is typically yellow due to the presence of sulphur, reflecting its character as a sulfide compound. Thus, it is not white.
- Lead sulphate: Lead sulphate (\( \text{PbSO}_4 \)) is known to be a white solid and is insoluble in water. This makes it a promising candidate for being the white compound among the given options.
- Lead iodide: Lead iodide (\( \text{PbI}_2 \)) typically appears as a bright yellow solid. Due to its characteristic color, it is not the white compound in question.
- Ammonium arsinomolybdate: Beyond common compounds, this is not as widely recognized and usually involves complex formation with variable colors. Thus, without specific reference indicating otherwise, it can't be assumed to be white.
From the above analysis, we can conclude that among the listed options, lead sulphate is distinctly known for its white coloration.
Therefore, the correct answer is lead sulphate.
Approach Solution -2
Lead sulphate is white in color.
Ammonium sulphide is soluble.
Lead iodide is bright yellow.
Ammonium arsenomolybdate is yellow.
Top Questions on d -and f -Block Elements
- At temperature \(T\) K, \(2\) moles of liquid \(A\) and \(3\) moles of liquid \(B\) are mixed. The vapour pressure of the ideal solution formed is \(320\) mm Hg. At this stage, one mole of \(A\) and one mole of \(B\) are added to the solution. The vapour pressure is now measured as \(328.6\) mm Hg. The vapour pressures (in mm Hg) of pure \(A\) and pure \(B\) respectively are:
- JEE Main - 2026
- Chemistry
- d -and f -Block Elements
- Consider the general reaction given below at 400 K: xA(g) ⇌ yB(g). The values of K___p and K___c are studied under the same condition of temperature but variation in x and y.
(i) K___p = 85.87 and K___c = 2.586
(ii) K___p = 0.862 and K___c = 28.62.
The values of x and y in (i) and (ii) respectively are :- JEE Main - 2026
- Chemistry
- d -and f -Block Elements
- Among the following oxides of 3d elements, the number of mixed oxides are ____________.
\[ \mathrm{Ti_2O_3,\ V_2O_4,\ Cr_2O_3,\ Mn_3O_4,\ Fe_3O_4,\ Fe_2O_3,\ Co_3O_4} \]- JEE Main - 2026
- Chemistry
- d -and f -Block Elements
- Statement-I : Consider the following pairs of ions $(\text{Sc}^{3+}, \text{Ti}^{3+}), (\text{Ti}^{4+}, \text{Ni}^{2+}), (\text{Cu}^{2+}, \text{Zn}^{2+})$ and $(\text{Cr}^{3+}, \text{Mn}^{3+})$. Out of these pairs three pairs consist of ions that are both coloured :
Statement-II : Among the lanthanide ions $\text{Eu}^{2+}$, $\text{Gd}^{3+}$, $\text{Ce}^{4+}$ and $\text{Tb}^{4+}$, the ion $\text{Tb}^{4+}$ is the strongest reducing agent.
Choose the correct option.- JEE Main - 2026
- Chemistry
- d -and f -Block Elements
- Why is the ability of oxygen greater than fluorine to stabilise higher oxidation states of transition metals?
- CBSE CLASS XII - 2025
- Chemistry
- d -and f -Block Elements
Questions Asked in JEE Main exam
- Consider light travelling from a medium A to medium B separated by a plane interface. If the light undergoes total internal reflection during its travel from medium A to B and the speed of light in media A and B are \(2.4 \times 10^8\) m/s and \(2.7 \times 10^8\) m/s, respectively, then the value of critical angle is :
- JEE Main - 2026
- Newtons Laws of Motion
In the following \(p\text{–}V\) diagram, the equation of state along the curved path is given by \[ (V-2)^2 = 4ap, \] where \(a\) is a constant. The total work done in the closed path is:
- JEE Main - 2026
- Thermodynamics
Let \( ABC \) be a triangle. Consider four points \( p_1, p_2, p_3, p_4 \) on the side \( AB \), five points \( p_5, p_6, p_7, p_8, p_9 \) on the side \( BC \), and four points \( p_{10}, p_{11}, p_{12}, p_{13} \) on the side \( AC \). None of these points is a vertex of the triangle \( ABC \). Then the total number of pentagons that can be formed by taking all the vertices from the points \( p_1, p_2, \ldots, p_{13} \) is ___________.
- JEE Main - 2026
- Coordinate Geometry
- A voltage regulating circuit consisting of a Zener diode having breakdown voltage of $10\,\text{V}$ and maximum power dissipation of $0.4\,\text{W}$ is operated at $15\,\text{V}$. The approximate value of protective resistance in this circuit is ___ $\Omega$.
- JEE Main - 2026
- Semiconductor electronics: materials, devices and simple circuits
- Two point charges of \(1\,\text{nC}\) and \(2\,\text{nC}\) are placed at two corners of an equilateral triangle of side \(3\) cm. The work done in bringing a charge of \(3\,\text{nC}\) from infinity to the third corner of the triangle is ________ \(\mu\text{J}\). \[ \left(\frac{1}{4\pi\varepsilon_0}=9\times10^9\,\text{N m}^2\text{C}^{-2}\right) \]
- JEE Main - 2026
- Electrostatics