List of practice Questions

Which of the following is/are grouped under phanerogams ?
An unknown element forms an oxide. What will be the equivalent weight of the element if the oxygen content is $20\%$ by weight?
$1$ mole of methyl amine on reaction with nitrous acid gives at $NTP$
1.520 g of hydroxide of a metal on ignition gave 0.995 g of its oxide. The equivalent weight of the metal is
During electrolysis of water the volume of $O _{2}$ liberated is $2.24\, dm ^{3}$. The volume of hydrogen liberated, under same conditions will be
Mass of acetic acid required to neutralize 100 cc of 0.1 N NaOH solution is
The number of moles of oxygen obtained by the electrolytic decomposition of $108 \,g$ water is
Number of atoms of $He$ in $100\, u$ of $He$ (atomic wt of $He$ is $4$) are
If charge and distance between two charges are reduced to half. Force between them
If the electric flux entering and leaving an enclosed surface respectively are $\phi_{1}$ and $\phi_{2}$, the electric charge inside the surface will be
Three point charges $ +q,-2q $ and $ +q $ are placed at points $ (x=0,y=a,x=0), $ $ (x=0,y=0,z=0) $ and $ (x=a,y=0,z=0), $ respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are
Three charges $ 1\mu C, $ $ 1\mu C $ and $ 2\mu C $ are kept at vertices of $A, B$ and $C$ of an equilateral triangle $ABC$ of $ 10\,cm $ side respectively. The resultant force on the charge at $C$ is
A charge $q$ is uniformly distributed on a ring of radius $r$. A sphere of an equal radius is constructed with its centre lying on the periphery of the ring. The flux of electric field through the surface of the sphere will be
An electric dipole of moment $p$ is Iying along a uniform electric field $E$. The work done in rotating the dipole by $90^{\circ}$ is
Electric field at the centre of a uniformly charged semicircle of radius a is
If $R$ be a relation defined as $aRb iff |a - b| > 0$, then the relation is
What is the time (in sec) required for depositing all the silver present in $125\, mL$ of $1\, M\,AgNO _{3}$ solution by passing a current of $241.25 A$ ?$ (IF =965000\, C)$
Two glass plates are separated by water. If surface tension of water is $75$ dyne/cm and area of each plate wetted by water is $8\, cm ^{2}$ and the distance between the plates is $0.12 \,mm$, then the force applied to separate the two plates is
The excess pressure inside a soap bubble is three times than excess pressure inside a second soap bubble, then the ratio of their surface area is
The ions $ {{N}^{3-}},{{O}^{2-}},{{F}^{-}},N{{a}^{+}}M{{g}^{2+}} $ are isoelectronic. Their ionic radii show
Fluorine molecule has bond order one. The number of electrons in the ant bonding molecular orbitals is two less than that in bonding molecular orbitals.
64 small drops of water having same charge and same radius are combined to form one big drop. The ratio of capacitance of big drop to small drop is
Work done in placing a charge of $ 8\times 10^{-18}C $ on a condenser of capacity $100 \, \mu \, F$ is
Two spherical conductors B and C having equal radii and carrying equal charges in them repel each other with a force F when kept apart at some distance. A third spherical conductor having same radius as that of B but uncharged, is brought in contact with B, then brought in contact with C and finally removed away from both. The new force of repulsion between B and C is
$ C{{H}_{3}}C{{H}_{2}}Cl $ undergoes homolytic fission, produces