List of practice Questions

Tincture of iodine is
Three identical spherical shells, each of mass m and radius r are placed as shown in figure. Consider an axis X X' which is touching to two shells and passing through diameter of third shell. Moment of inertia of the system consisting of these three spherical shells about XX' axis is
The yellow colour in $NaCl$ crystals is due to
The sum of the common roots of the equations , $ {{x}^{3}}+2{{x}^{2}}-5x+2=0~ $ and $ {{x}^{3}}+\text{ }{{x}^{2}}-8x+4=0, $ is
The standard electrode potential for Daniell cell is $1.1\, volt$. What is the standard Gibbs energy for the reaction?
The species $ {Ar, K^+}$ and $ {Ca^{2+}}$ contain the same number of electrons. In which order do their radii increase?
The site for lipid synthesis in a cell is
The primary constriction on a chromosome is called
The polymer obtained by the interaction of ethylene glycol and terephthalic acid is
The ornithine cycle occurs in the
The near point and far point of a person are $40\, cm$ and $250 \,cm$ respectively. Determine the power of the lens he/she should use while reading a book kept at distance $25 \,cm$ from the eye.
The infective stage of malarial parasite is called
The inflorescence found in banana is
The hormone pepsin is activated by the
The hilum is a scar on the
The heat of combustion of carbon to $ {CO_2}$ is $ {- 393.5 \, kJ/mol}$. The heat released upon formation of 35.2 g of $ {CO_2}$ from carbon and oxygen gas is:
The girth or diameter of the stem increases due to the activity of the following
The function of "Sodium pump" is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of the pump?
The first body segment of earthworm is
The equilibrium constant for the equilibrium $PCl _{5}(g) \rightleftharpoons PCl _{3}(g)+ Cl _{2}(g)$ at a particular temperature is $2 \times 10^{-2}\, mol L ^{-1}$. The number of moles of $PCl _{5}$ that must be taken in a one litre flask at the same temperature to obtain a concentration of $0.20$ mole of chlorine at equilibrium is
The entry of food into the larynx is prevented by
The domestic sewage in large cities
The degeneracy of hydrogen atom that has energy equal to $\frac{-R_{ H }}{9}$ is (where $R_{ H }=$ Rydberg constant)
The current gain for a transistor working as common-base amplifier is $0.96$. If the emitter current is $7.2\, mA$, then base current is
The chromosomal theory of linkage was contributed by