List of practice Questions

Assertion (A) : H.C.F. $(36 m^{2}, 18 m) = 18 m$, where $m$ is a prime number.
Reason (R) : H.C.F. of two numbers is always less than or equal to the smaller number.

The number of elements in the set \[ S = \left\{ x : x \in [0,100] \text{ and } \int_{0}^{x} t^2 \sin(x - t)\,dt = x^2 \right\} \] is

An electron falls through a distance 1.5 cm in a uniform electric field of magnitude 2.0 $\times$ 10$^4$ N/C from rest. The time taken to cover this distance in second is \textunderscore\textunderscore\textunderscore\textunderscore\textunderscore.
(e = 1.6 $\times$ 10$^{-19}$ C, m$_e$ = 9.11 $\times$ 10$^{-31}$ kg)

Direction - For the below Assertion [As] and Reason [R], choose the correct alternative-
Assertion [As] : Mercury is the farthest planet from the Sun.
Reason [R] : Mercury is the smallest planet in the entire solar system.

Assertion (A): Reflex actions do not involve thinking.
Reason (R): Most reflex actions are controlled by the spinal cord.

Find the value of $ \left| \begin{matrix} 0 & c & b \\ c & 0 & a \\ b & a & 0 \end{matrix} \right|^2 $

Arrange the following events in chronological order and choose the correct option: I. Salt Satyagraha
II. Kheda Satyagraha
III. Rowlatt Satyagraha
IV. Ahmedabad Mill Workers Satyagraha

The process of copying genetic information from template strand of DNA into RNA is called transcription. It is mediated by RNA polymerase. Transcription takes place in the nucleus of eukaryotic cells. In transcription, only a segment of DNA and only one of the strands is copied into RNA.

We know that plasmids and bacteriophages are the most commonly used vectors in biotechnology experiments. If we can link an alien piece of DNA to the plasmid DNA, the alien DNA can be multiplied equal to the copy number of the plasmid. Engineered vectors are used these days. Study the diagram of the E. coli cloning vector pBR322 and answer the questions that follow :