List of practice Questions

Assertion (A): Neurohypophysis of the pituitary gland releases a hormone, which is helpful for child birth.
Reason (R): Neurohypophysis releases relaxin, which contracts the uterine muscles during child birth.

Two bar magnets A and B are identical and arranged as shown. Their lengths are negligible compared to the separation between them. A magnetic needle placed between the magnets at point P gets deflected through an angle $ \theta $ under their influence. The ratio of distances $ d_1 $ and $ d_2 $ is:

The term 'yellow body' refers to.

Match the following:

A block of mass $m$ is placed in equilibrium on a moving horizontal plank. The maximum horizontal acceleration of the plank for $\mu = 0.2$ is (Acceleration due to gravity = $10 \, {ms}^{-2}$).

The number of $\sigma$ bonds, $\pi$-bonds, and lone pairs of electrons present in the product Z in the given reaction sequence are respectively:

In the following diagram, the work done in moving a point charge from point P to point A, B and C are $ W_A, W_B, W_C $ respectively. Then (A, B, C are points on semicircle and point charge $ q $ is at the centre of semicircle)

Styrene on reaction with reagent X gave Y, which on hydrolysis followed by oxidation gave Z. Z gives positive 2,4-DNP test but does not give iodoform test. What are X and Z respectively?

A person climbs up a conveyor belt with a constant acceleration. The speed of the belt is $ \sqrt{\frac{g h}{6}} $ and the coefficient of friction is $ \frac{5}{3\sqrt{3}} $. The time taken by the person to reach from A to B with maximum possible acceleration is: \includegraphics[]{87.png}

In case of diffraction, if $ a $ is a slit width and $ \lambda $ is the wavelength of the incident light, then the required condition for diffraction to take place is:

The capacitance of an isolated sphere of radius $ r_1 $ is increased by 5 times when enclosed by an earthed concentric sphere of radius $ r_2 $. The ratio $ \frac{r_1}{r_2} $ is:

At $ T(K) $, the $ P, V $ and $ u_{\text{rms}} $ of 1 mole of an ideal gas were measured. The following graph is obtained. What is its slope ($ m $)? (x-axis = $ PV $; y-axis = $ u_{\text{rms}}^2 $; $ M $ = Molar mass)

IUPAC names of the following compounds A and B are:

Two cylindrical vessels A and B of different areas of cross-section kept on the same horizontal plane are filled with water to the same height. If the volume of water in vessel A is 3 times the volume of water in vessel B, then the ratio of the pressures at the bottom of the vessels A and B is:

A ray of light travels from an optically denser to rarer medium. The critical angle for the two media is $ C $. The maximum possible deviation of the ray will be:

The ground state energy of hydrogen atom is -13.6 eV. The potential energy of the electron in this state is:

The correct statement regarding chemisorption is

The average power generated by a 90 kg mountain climber who climbs a summit of height 600 m in 90 minutes is (Acceleration due to gravity $ g = 10 $ m/s$^2$):

For the reaction: $A_2(g) \rightleftharpoons B_2(g)$

The equilibrium constant $K_c$ is given as 99.0. In a 1 L closed flask, two moles of $B_2(g)$ is heated to $T(K)$. What is the concentration of $B_2(g)$ (in mol L$^{-1}$) at equilibrium?

Pyriform gametes with two laterally attached flagella are found in

Number of chromosomes in maize root cells at G1 phase, after S and M phases respectively

Study and match the following Lists

Assertion (A): DNA fragments are positively charged.
Reason (R): DNA fragments are separated by gel electrophoresis technique.

Assertion (A): Biological control developed for treatment of plant diseases.
Reason (R): Trichoderma are free living fungi common in root ecosystem.

Choose the correct pair related to Bioactive compounds.