List of practice Questions

A wire fixed at the upper end stretches by length by applying a force $F$. The work done in stretching is
A variable circle passes through the fixed point A (p, q) and touches x-axis. The locus of the other end of the diameter through A is
A truck travelling due north at $20 \,ms$ turns west and travels with same speed. What is the change in velocity?
The magnetic field $ \vec{B} $ in a circular coil does not depend on:
The radius of gyration of a hollow spherical shell is $2.5\, J$. If its frequency of rotation is made 10 times, then new kinetic energy will be:
A satellite of mass $m$ revolves around the earth of radius $R$ at a height $x$ from its surface. If $g$ is the acceleration due to gravity on the surface of the earth, the orbital speed of the satellite is
The variation of induced emf (e) with time (t) in a coil if a short bar magnet is moved along its axis with a constant velocity is best represented as
Which of the following is called Marsh gas?
Which of the following is not a characteristic of chemisorption ?
Which of the following is not a synthetic fibre?
Which of the following is the chief ore of copper?
Which of the following reagent can distinguish between $1$-Butyne and $2$-Butyne?
Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?
Which one of the following statements about the zeolites is false ?
Which carbon is more electronegative?
Ionic radii are
In semiconductors at a room temperature
In an intrinsic semiconductor:
In an equilateral triangle $A B C, F_{1}, F_{2}$ and $F_{3}$ are three forces acting along the sides $A B, B C$ and $A C$ as shown in the given figure. What should be the magnitude of $F_{3}$ so that the total torque about $O$ is zero?
In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order:
At absolute zero temperature, semiconductor behaves as a/an:
Which of the following is not a function of proteins?
Which of the following is not considered as an organometallic compound ?
Capitulum inflorescence is found in
Silent Valley is situated in