List of practice Questions

A monochromatic ray strikes the surface of identical prisms (A, B and C) at different angles of incidence. The diagram below shows their refracted rays. Study the path of these refracted rays and identify in which of the diagrams
(a) the angle of incidence is maximum.
(b) the angle of incidence is minimum.
(c) the angle of incidence is equal to the angle of emergence.
Complete the following: A car is moving in uniform circular motion. The direction of friction between the tyres and the path is _____________.
A DNA molecule is 160 base pairs long. It has 30% Guanine. How many Adenine bases are present in this DNA molecule?
Let \( S = \{z : 3 \le |2z - 3(1+i)| \le 7\ \) be a set of complex numbers. Then \( \min_{z \in S} \left| z + \frac{1}{2}(5+3i) \right| \) is equal to :}
Let $z$ be the complex number satisfying $|z - 5| \le 3$ and having maximum positive principal argument. Then $34 \left| \frac{5z - 12}{5iz + 16} \right|^2$ is equal to :
In a Young's double slit experiment, the slits are separated by 0.2 mm and placed 2.0 m away. The distance between the central bright fringe and the first bright fringe (fringe width) is measured to be 1.5 cm. Determine the wavelength of light used in the experiment.
The correct order of stability for the following carbanions is: \[ \text{CH}_2=\text{CH}^- ,\quad \text{CH}_3-\text{CH}_2^- ,\quad \text{CH}\equiv\text{C}^- \]
Let \(A\) be the focus of the parabola \(y^2=8x\). Let the line \(y=mx+c\) intersect the parabola at two distinct points \(B\) and \(C\). If the centroid of triangle \(ABC\) is \(\left(\frac{7}{3},\frac{4}{3}\right)\), then \((BC)^2\) is equal to:
Which of the following compound is not allylic chloride?
In potassium trioxalatoferrate(III), what are the primary and secondary valency of central atom respectively?
Which of the following statement is not applicable to Valence Bond Theory?
What is the true IUPAC name of \( \mathrm{Hg_2[Co(SCN)_6]} \) coordination compound?
Which catalyst is used in Wacker process?
Which of the following ion has highest magnetic moment value?
Which of the following metal does not liberate \(\mathrm{H_2}\) gas by reacting with HCl?
The rate of the chemical reaction doubles for an increase of \(10 \, \mathrm{K}\) in absolute temperature from \(298 \, \mathrm{K}\). What will be the activation energy?
When the value of rate constant \((k)\) is \(2.0 \, \mathrm{min^{-1}}\), then what will be half time of reaction \((t_{1/2})\) in seconds?
Rate constant \( k = 4.5 \times 10^{-2}\ \mathrm{L^2\ mol^{-2}\ s^{-1}} \), then what is the order of reaction?
According to Arrhenius equation in graph of \( \log k \) to \( \dfrac{1}{T} \), the slope will be
How much electricity in terms of Faraday is required to produce \(40.0\) g of Al from molten \( \mathrm{Al_2O_3} \)?
Calculate the equilibrium constant of the following reaction:
\[ \mathrm{Cu_{(s)} + 2Ag^+_{(aq)} \rightarrow Cu^{2+}_{(aq)} + 2Ag_{(s)}}, \qquad E^\circ_{\text{cell}} = 0.46\,V \]
Which of the following statement is not true for fuel cell?
Which of the following metal behaves as weakest reducing agent?
Which of the following solutions will show negative deviation from Raoult's law?
Calculate the mass of ascorbic acid \((\mathrm{C_6H_8O_6})\) to be dissolved in \(75\) g of acetic acid to lower its melting point by \(1.5^\circ \mathrm{C}\). \(K_f = 3.9\ \mathrm{K\ kg\ mol^{-1}}\); \(H = 1,\ C = 12,\ O = 16\ amu\)