List of practice Questions

An electromagnetic wave of frequency $ \upsilon $ = 3.0 MHz passes from vacuum into a dielectric medium with relative permittivity $\varepsilon$ = 4.0. Then
An excess of $AgNO_3$ is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium(III) chloride. The number of moles of $AgCl$ precipitated would be :
Choose the right one which denotes genetic diversity.
Which of the following tissue is not a component of a complex tissues ?
The trachea terminates into
If the determinant of the adjoint of a (real) matrix of order $3$ is $25$, then the determinant of the inverse of the matrix is
A plano convex lens fits exactly into a plano concave lens. Their plane surfaces are parallel to each other. If lenses are made of different materials of refractive indices $\mu_1$ and $\mu_2$ and $R$ is the radius of curvature of the curved surface of the lenses, then the focal length of combination is
A sagittal section of human brain is shown here. Identify at least two labels from A-D.
A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics?
In Young's double slit experiment, the slits are 2mm apart and are illuminated by photons of two wavelengths $\lambda_1 = 12000 \mathring A $ and $\lambda_2 = 10000 \mathring A.$ At what minimum distance from the common central bright fringe on the screen 2m from the slit will a bright fringe from one interference pattern coincide with a bright fringe from the other ?
One mole of solid iron was vaporized in an oven at its boiling point of 3443 K and enthalpy of vaporization of iron is 344.3 kJ mol$^{-1}$. The value of entropy vaporization (in J mol$^{-1}$) of iron is
According to collision theory of chemical reactions rates of the reaction increase with increase in the temperature of a reaction because of
Specify the coordination number of cobalt in $\left[ Co ( CN )\left( H _{2} O \right)( en )_{2}\right]^{2+}$
Unpolarized light falls on two polarizing sheets placed one on top of other. If the intensity of transmitted light is one fourth of the incident light, the angle between them is
When an object is placed $40\,cm $ from a diverging lens, its virtual image is formed $20\,cm$ from the lens. The focal length and power of lens are
What will be the freezing point of $1\%$ solution of glucose in water, given that molal depression constant for water is $ 1.84\,K\, mol^{-1}$
Which type of isomerism is exhibited by $\left[ Pt \left( NH _{3}\right)_{2} Cl _{2}\right]$ ?
A particle moving in a circular path has an angular momentum of L. If the frequency of rotation is halved, then its angular momentum becomes
When a solution of sodium hydroxide is added to acetic acid solution, the conductivity of the resulting solution will
Which of the following species has a trigonal planar shape?
The most stable oxidation state of lanthanides is
Which of the following is least reactive to nitration?
How many numbers with no more than three digits can be formed using only the digits $1$ through $7$ with no digit used more than once in a given number?
The angle between the linear momentum and angular momentum of a particle in circular motion is
The self-inductance of an air core solenoid of $100$ turns is $1\, mH$. The self-inductance of another solenoid of $50\, turns$ (with the same length and cross-sectional area) with a core having relative permeability $500$ is