List of practice Questions

Lack of pulmonary surfactant produces

Which one of the following are intracellular obligate parasites?

Diabetes mellitus is caused due to the deficiency of

The least porous soil among the following is a

Let $z = \cos \theta + i \sin \theta$. Then, the value of $\displaystyle \sum _{m=0}^{15} Im (z^{2m-1})$ at $\theta = 2^\circ$ is

For the circuit shown in the figure

In which region of the interphase chromosome does transcription take place ?

A charged particle (charge $q$ ) is moving in a circle of radius $R$ with uniform speed $v$. The associated magnetic moment $\mu$ is given by

A radioactive nucleus is being produced at a constant rate $\alpha$ per second. Its decay constant is $\lambda$. If $N_0$ are the number of nuclei at time t = 0, then the maximum number of nuclei possible are

The number of moles of $ KMnO_{4}$ reduced by one mole of $KI$ in alkaline medium is

A ray of light is incident on a plane mirror at an angle of $60^\circ$. The angle of deviation produced by the mirror is

Palisade parenchyma is absent in leaves of

Tapetum is found in

An LCR series circuit, connected to a source $E$, is at resonance. Then

A conducting rod of length $l$ and mass $m$ is moving down a smooth inclined plane of inclination $\theta$ with constant velocity $v$. A current $i$ is flowing in the conductor in a direction perpendicular to paper inwards. A vertically upwards magnetic field $\vec{ B }$ exists in space. Then magnitude of magnetic field $\vec{ B }$ is

A galvanometer coil has a resistance of $10 \, \Omega $ and the ammeter shows full scale deflection for a current of $1\,mA$. The shunt resistance required to convert the galvanometer into an ammeter of range $0-100\,mA$ is about

A galvanometer having a coil resistance of $ 60O $ shows full scale deflection when a current of 1.0 A passes through it. It can be converted unto an ammeter to read currents upto 5.0 A by

A galvanometer of resistance $10\, \Omega$ gives full-scale deflection when $1\, mA$ current passes through it. The resistance required to convert it into a voltmeter reading upto $2.5\, V$ is

A long straight wire of a circular cross-section (radius $ a $ ) carries a steady current $ I $ and the current $ I $ is uniformly distributed across this cross-section. Which of the following plots represents the variation of magnitude of magnetic field $B$ with distance $r$ from the centre of the wire?

A steady current of $1.5\, A$ flows through a copper voltameter for 10 min. If the electrochemical equivalent of copper is $30 \times 10^{-5}\, g\, C ^{-1}$, the mass of copper deposited on the electrode will be