List of practice Questions

Match column I with column II and select the correct option from the codes given below.
Which of the following is used as bioinsecticide?
Select the incorrect match.
A plasmolysed cell can be deplasmolysed by placing it in
Which of the following is the correct scientific name of wheat derived by binominal nomenclature?
A gun of mass 10 kg fires 4 bullets per second. The mass of each bullet is 20 g and the velocity of the bullet when it leaves the gun is 300 ms. The force required to hold the gun when firing is
$H_3BO_3$ is a weak acid. Water extracts the proton of $H_3BO_3$.
Arrange the given compounds in decreasing order of boiling points.
Ease of nucleophilic addition in the given compounds is
The acidic strength of the given compounds follows the order
Which of the following reagents cannot be used for the given conversion?
A conductivity cell has a cell constant of 0.5 cm. This cell when filled with 0.01 M NaCl solution has a resistance of 384 ohms at 25$^{\circ}$C. Calculate the equivalent conductance of the given solution.
How many Faradays of electricity are required for the given reaction to occur ? $ {MnO4^{-} -> Mn^{2+}}$
Paints and hair creams are respectively
The angular amplitude of a simple pendulum is $ \theta_{0} $ The maximum-tension in its string will be
If $\vec{A}$ and $\vec{B}$ are non-zero vectors which obey the relation $\left|\vec{A}+\vec{B}\right|=\left|\vec{A}-\vec{B}\right|$, then the angle between them is
In a Fraunhofer diffraction at single slit of width d with incident light of wavelength 5500 $?$, the first minimum is observed, at angle 30$^{\circ}$. The first secondary maximum is observed at an angle $\theta$ =
The electromagnetic waves are transverse in nature. Waves of wavelength 10 mm are radiowave and microwave.
When a charged particle moves in a circular path. It produces electromagnetic wave. Charged particle has acceleration.
A ball is dropped from the top of a building 100 m high. At the same instant another ball is thrown upwards with a velocity of 40 m/s from the bottom of the building. The two balls will meet after
Electron microscope has more resolving power than optical microscope. We can control the energy of electron.
Which of the following Material has lowest resistivity ?
Which of the following reacts fastest with conc. $HCl$ ?
Which of the statement is incorrect about the simple microscope?
Vegetative reproduction in Marchantia occurs through following: