List of practice Questions

Which of the following is an intra uterine device (IUD)?

Assertion (A): In the polluted area, Birmingham, black peppered moths were abundant. In the non-polluted area, Dorset, grey forms were abundant.
Reason (R): Natural selection.
Identify the correct option from the following

Identify the complex ion/s with the least spin only magnetic moment (in BM).
I) [Fe(CN)$_6$]$^{3-}$
II) [Co(CN)$_6$]$^{3-}$
III) [Mn(CN)$_6$]$^{4-}$
IV) [Fe(CN)$_6$]$^{4-}$

Study the following statements and pick up the incorrect statements.
I. Haemophilia is an X-linked disorder due to dominant genes.
II. Inheritance of colour blindness follows the cris-cross pattern.
III. Haemophilia A and Haemophilia C are X-linked disorders.
IV. Y-linked genes are called holandric genes.

If the speed of projection of a projectile is twice its speed when it is at maximum height, then the angle of projection is

Identify the correct statements
I) Enthalpy is an intensive property
II) For, H$_2$O(l) $\longrightarrow$ H$_2$O(g) process, $\Delta S$ increases
III) Entropy is a state function

The reactions which give $ \text{XeO}_3 $ as one of the products are:
I) Complete hydrolysis of $ \text{XeF}_2 $
II) Complete hydrolysis of $ \text{XeF}_4 $
III) Complete hydrolysis of $ \text{XeF}_6 $

Match the following:

List - I	List - II
A. Velamen Roots	II. Eichhornia
B. Axillary buds as tendrils	I. Watermelon
C. Floral buds as storage food	IV. Agave
D. Swollen petiole	III. Pisum

Identify the correct option from the following:

Match the following:

List - I	List - II
A. Nucleic acids structure	IV. Phosphorous
B. Synthesis of nucleic acid	III. Iron
C. Stabilize protein structure	II. Sulphur
D. Catalase	II. Sulphur

Somatostatin is secreted by

Two concentric loops of radii 'r' and 'R' are in same plane such that \( R \gg r \). If a current \( I \) is maintained in the loop of radius \( r \), then the magnetic flux associated with the loop of radius 'R' due to this current is

Which of the following statements is incorrect about enthalpy?

During the denaturation of proteins, which of the following structures will remain intact?

A transistor has 3 impurity regions of different doping levels. In the order of increasing doping level, the regions are

The heat supplied to a gas at a constant pressure of $5 \times 10^5\, Pa$ is 1000 kJ. If the volume of gas changes from 1 m$^3$ to 2.5 m$^3$, then the change in internal energy of the gas is

Consider the following statements:
Statement-I: Shaving soaps contain glycerol to prevent rapid drying.
Statement-II: Laundry soaps contain sodium carbonate as filler.
Which of the following is correct?

If the maximum and minimum temperatures at a place on a day are measured as $44^\circ C \pm 0.5^\circ C$ and $22^\circ C \pm 0.5^\circ C$ respectively, then the temperature difference is

A liquid drop of diameter $D$ splits into $3375$ small identical drops. If $S$ is the surface tension of the liquid, then the change in the surface energy in the process is

Consider the following changes I and II
Change I: ${O2 → O2^{2-}}$
Change II: ${O2 → O2^{-}}$
The correct statements about these changes (I) and (II) in accordance with MO theory are

The work done in rotating a bar magnet which is initially in the direction of a uniform magnetic field through $ 45^\circ $ is $ W $. The additional work to be done to rotate the magnet further through $ 15^\circ $ is.

Three blocks A, B and C are arranged as shown in the figure such that the distance between two successive blocks is 10 m. Block A is displaced towards block B by 2 m and block C is displaced towards block B by 3 m. The distance through which the block B should be moved so that the centre of mass of the system does not change is

Three blocks A, B and C are arranged as shown in the figure

If the maximum velocity and maximum acceleration of a particle executing simple harmonic motion are respectively \( 5 \, \text{m s}^{-1} \) and \( 10 \, \text{m s}^{-2} \), then the time period of oscillation of the particle is

In Young's double slit experiment, the wavelength of monochromatic light is increased by 20% and the distance between the two slits is decreased by 25%. If the initial fringe width is 0.3 mm, then the final fringe width is

Match the following:

The reaction of benzene diazonium chloride with Cu and HCl is known as: