List of practice Questions

A sphere of mass 'm' moving with velocity 'v' collides head-on on another sphere of same mass which is at rest. The ratio of final velocity of second sphere to the initial velocity of the first sphere is (e is coefficient of restitution and collision is inelastic)
Which among the following oxoacids of phosphorus shows a tendency of disproportionation?
In which among the following solids, Schottky defect is NOT observed?
What is the number of donar atoms in dimethylglyoximato ligand?
Which of the following is NOT a tranquilizer?
The lowest water potential in the xylem will be of:
The angle made by incident ray of light with the reflecting surface is called
If numerical aperture of a microscope is increased then its
A metal wire of density $'\rho'$ floats on water surface horizontally. If it is NOT to sink in water then maximum radius of wire is proportional to (T = surface tension of water, g = gravitational acceleration)
A square frame $ABCD$ is formed by four identical rods each of mass 'm' and length 'l' This frame is in $XY$ -plane such that side $AB$ coincides with $X$-axis and side $AD$ along $Y$-axis. The moment of inertia of the frame about $X$-axis is
During galvanization of iron, which metal is used for coating iron surface ?
Identify the element that forms amphoteric oxide.
Identify the product 'C' in the following reaction. $\ce{Aniline ->[(CH_3 CO)_2 O][Pyridine] A ->[Br_2][CH_3COOH] B ->[H^{+} or \, OH^{-}] C }$
The increase in energy of a metal bar of length 'L' and cross-sectional area 'A' when compressed with a load 'M' along its length is (Y = Young�s modulus of the material of metal bar)
The molarity of urea (molar mass $\ce{60 \, g \, mol^{-1}}$) solution by dissolving 15 g of urea in 500 $cm^3$ of water is
The most basic hydroxide from following is
The ratio of magnetic fields due to a bar magnet at the two axial points $P_1$ and $P_2$ which are separated from each other by $10 \,cm$ is 25 : 2. Point $P_1$ is situated at 10 cm from the centre of the magnet. Magnetic length of the bar magnet is (Points $P_1$ and $P_2$ are on the same side of magnet and distance of $P_2$ from the centre is greater than distance of $P_1$ from the centre of magnet)
Two moles of an ideal gas are allowed to expand from a volume of $10 \, dm^3$ to $ 2m^3$ at 300 K against a pressure of 101.325 KPa. Calculate the work done.
What is the geometry of water molecule?
Which among the following equations represents the first law of thermodynamics under isobaric conditions ?
Molarity is
The expression for electric field intensity at a point outside uniformly charged thin plane sheet is (d is the distance of point from plane sheet)
If the half life of a radioactive nucleus is $3$ days, nearly what fraction of the initial number of nuclei will decay on the $3$rd day ? (Given that $\sqrt[3]{0.25} \approx 0.63)$)
How the linear velocity ?$v$? of an electron in the Bohr orbit is related to its quantum number ?$n$? ?
Human urine contains