List of practice Questions

Which of the following is correct with respect to the graph given?
[R] = Conntration at time 't' 
[R]$_0$ = Initial conntration 

A specific organism [A] showing the lack of cell wall, survive without oxygen, pleomorphic. The other organism [B] has cell wall embedded with silica and indestructible. A and B respectively belong to
Dense irregular connective tissue occurs in:
Identify the protozoan with anematic flagellum:
The structures of the parent that disappear during binary fission of Euglena and develop afresh in daughter euglenae
If L is the inductance and C is the capacitance, then the frequency of a transistor oscillator is directly proportional to
Adiabatic bulk modulus of a gas at a pressure $ P $ is ($ \gamma $-ratio of specific heat capacity of the gas): Options:
During the propagation of a longitudinal wave, in the region of compressions and rarefactions, Options:
Select the correct statement regarding the cell membrane from the following
Following is not applicable in terms of plant-water relations, if a seed is soaked in water
Identify the correct option
Statement – I (SI): Hypo secretion of cortisol results in low blood pressure.
Statement – II (SII): Elevated levels of cortisol leads to hyperglycemia.
Lack of clotting factor – VIII causes
A ball of mass 50 g moving with a velocity of 10 ms$^{-1}$ is hit by a bat and the ball retraces back with a velocity of 20 ms$^{-1}$. Then the impulse on the ball is
The sulphide ore of copper containing iron as impurity is removed in the form of a slag by adding an oxide of element X. Identify the element X.
A charged particle when enters a uniform magnetic field moves in a helical path. If its angular velocity is \( 4\pi \times 10^6 \) rad s\(^{-1} \) and its velocity in the direction of magnetic field is \( 3 \times 10^5 \) ms\(^{-1} \) then the pitch of the helix is
The threshold wavelength of a photosensitive material is equal to the frequency of H$_\alpha$ line of hydrogen. If a photon whose frequency equal to the frequency of H$_\beta$ line of hydrogen is incident on this photosensitive material, the maximum kinetic energy of the emitted photoelectrons is: (R -- Rydberg's constant, h -- Planck's constant and c -- speed of light in vacuum)
Match the following
graphite
Hydroponics was first demonstrated by
Choose the correct combinations from the following
  • A. Induce sprouting of Potato tubers - Ethylene
  • B. Kill the dicot weeds - Cytokinin
  • C. Increase in stalk length of grapes - Gibberellins
  • D. Induce apical dominance - Auxins
Choose the incorrect statements regarding Hirudinea
  • A. Male reproductive system has cirrus.
  • B. They are exclusively marine and tubicolous.
  • C. Fertilization is external and development is direct.
  • D. Clitellum is conspicuous during the breeding season only.
Assertion (A): Pneumaticity of bones is the unique feature of reptiles.
Reason (R): Air sacs associated with lungs of birds facilitate continuous oxygenation of blood.
One of the following is not a part of light band of myofibril.
A simple pendulum is suspended in a car moving on a circular track of radius \( R \) with a uniform speed of \( \sqrt{1.732 g R} \). The pendulum is making small oscillations in a radial direction about its equilibrium position with a time period \( T \). If the car is at rest, the time period of the pendulum is:

Consider the following two statements: 
Statement I: Among Mg, Al, Mg\(^2\), Al\(^3\), the one having smallest size is Al\(^3\) 
Statement II: Eu is having exceptionally high atomic radii among lanthanide elements The correct answer is:

The device used to detect infrared radiations is