List of practice Questions

Identify the type of reproduction shown in the diagram given below:

Match List I with List II with respect to chronology of evolution of life forms :

List I             List II
A. About 65 mya    I. Jawless fish probably evolved
B. About 500 mya   II. The dinosaurs suddenly disappeared from the earth
C. About 350 mya   III. Seaweeds and few plants probably existed
D. About 320 mya   IV. Invertebrates were formed and became active

Choose the correct answer from the options given below :

A particle performs SHM with an amplitude of 5 cm. Find its acceleration when it is 3 cm from the mean position (assume $ \omega = 2 \, \text{rad/s} $).

The line $L_{1}$ joining the two points $(-1, 2)$ and $(3, 6)$ divides the line $L_{2}$ which passes through $(3, -1)$ in the ratio $1 : 3$ internally, then the equation of $L_{2}$ is

Direction: In each of the following sentences, the incorrect part of the sentence is underlined. Choose an alternative from the four given options so that the sentence is rendered correct.
Despite of the heavy rain, the event was successfully conducted.

If A = $\{a, b, c, d, e, f\},$ then the number of subsets of A which contains at least 2 elements is

DNA/RNA की द्वितीयक संरचना के संबंध में सही कथन है:

Two progressive waves $Y_1 = \sin 2\pi \left(\frac{t}{0.4} - \frac{x}{4}\right)$ and $Y_2 = \sin 2\pi \left(\frac{t}{0.4} + \frac{x}{4}\right)$ superpose to form a standing wave ($x$ and $y$ in SI units). Find the amplitude of the particle at $x = 0.5$ m.

The number of critical points of the function} \[ f(x)= \begin{cases} \dfrac{|\sin x|}{x}, & x\neq0\\ 1, & x=0 \end{cases} \] in the interval $(-2\pi,2\pi)$ is equal to:

SN2 reactions are favoured by:

Arrange the following events occurring in Renin-Angiotensin mechanism in the correct order :
A. Increase in blood pressure and Glomerular filtration rate.
B. Reabsorption of $Na^+$ and water from distal parts of tubule due to Aldosterone.
C. Fall in Glomerular filtration rate.
D. Vasoconstriction by Angiotensin II and release of Aldosterone.
E. Renin converts Angiotensinogen into Angiotensin I, followed by Angiotensin II.
Choose the correct answer from the options given below :

PQ and PR are two tangents to a circle with centre O and radius 5 cm. AB is another tangent to the circle at C which lies on OP. If $OP = 13$ cm, then find the length AB and PA.