List of top Questions asked in Punjab PMET- 2008

Given two vectors $\vec{ A }=-\hat{ i }+2 \hat{ j }-3 \hat{ k }$ and $\vec{ B }=4 \hat{ i }-2 \hat{ j }+6 \hat{ k }$. The angle made by $(\vec{ A }+\vec{ B })$ with $x$-axis is
In the figure, pendulum bob on left side is pulled aside to a height h from its initial position. After it is released it collides with the right pendulum bob at rest, which is of same mass. After the collision the two bobs stick together and raise to a height
When oxyhaemoglobin changes to de-oxyhaenioglobin, $Fe^{2+}$ ion changes from
When $AgNO _{3}$ solution is added in excess to $1\, M$ solution of $CoCl _{3} \cdot x NH _{3}$, one mole of $AgCl$ is formed. What is the value of $x$ ?
A body is thrown vertically up with certain initial velocity. The potential and kinetic energies of the body are equal at a point P in its path. If the same body is thrown with double the velocity upwards, the ratio of potential and kinetic energies of the body when it crosses the same point, is
The bond angle in $AsH _{3}$ is greater than that in
$N _{2}(g)+3 H _{2}(g) \rightleftharpoons 2 NH _{3}(g)+22\, kcal$. The activation energy for the forward reaction is $50\, kcal$. What is the activation energy for the backward reaction?
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
The temperature of the system decreases in the process of
The functional groups present in salol are
In Ramsden eyepiece, the two planoconvex lenses each of focal length $ f $ are separated by a distance $ 12\,cm $ . The equivalent focal length (in $ cm $ ) of the eyepiece is
The atomic number of an element $ M $ is $26R$ . How many electrons are present in the M-shell of the element in its $M^{3+}$ state?
The raw material used in nylon-$6$ is
Which one of the following reactions is called Rosemond reaction?
Which of the following is the decreasing order of boiling points of $ V $ group hydrides?
A mixture of amylose and amylopectin is called
What is the wave number of $4^{th}$ line in Balmer series of hydrogen spectrum? $(R=1,09,677\,cm^{-1})$
Disperse phase and dispersion medium in butter are respectively
A liquid does not wet the solid surface if the angle of contact is
A liquid drop of radius $ R $ breaks into $64$ tiny drops each of radius $ r $ . If the surface tension of the liquid is $ T $ , then the gain in energy is
A diverging meniscus lens of $ 1.5 $ refractive index has concave surfaces of radii $ 3 $ and $ 4\,cm. $ The position of the image, if an object is placed $ 12\,cm $ in front of the lens, is
A clock which keeps correct time at $20^{\circ} C$, is subjected to $40^{\circ} C .$ If coefficient of linear expansion of the pendulum is $12 \times 10^{-6} /{ }^{\circ} C$. How much will it gain or lose time ?
A stress of $3.18 \times 10^{8} Nm ^{-2}$ is applied to a steel rod of length $1\, m$ along its length. Its Young's modulus is $2 \times 10^{11} N-m^{-2}$. Then, the elongation produced in the rod (in $mm$ ) is
A sphere of mass $m$ moving with constant velocity $ u $ , collides with another stationary sphere of same mass. If $e$ is the coefficient of restitution, the ratio of the final velocities of the first and second spheres is
A body of mass $ 2\,kg $ is thrown up vertically with kinetic energy of $ 490\,J $ . If $ g=9.8\,m/s^{2} $ , the height at which the kinetic energy of the body becomes half of the original value, is