List of practice Questions

Faster distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the :

Give below is the diagram of a bacteriophage. In which one of the options all the four parts $A, B, C$ and $D$ are correct?

Which one of the following statements about certain given animals is correct?

A wire of length $20\,cm$ is bent in the form of a sector of a circle. The maximum area that can be enclosed by the wire is ____

If $m$ is the slope of one of the lines represented by $ax^2 + 2hxy + by^2 = 0,$ then $(h + bm)^2$ = ______

The sum of all two digit natural numbers which leave a remainder $5$ when they are divided by $7$ is equal to

Volume of a gas at NTP is $ 1.12\times {{10}^{-7}}c{{m}^{3}} $ . The number of molecules in it is

The line joining $A (2, -7)$ and $B(6, 5)$ is divided into $4$ equal parts by the points $ P,Q$ and $R$ such that $AQ = RP = QB$. The midpoint of $ PR$ is _______

The number $(49^2 -4) (49^2 -49)$ is divisible by ..................

The constant term of the polynomial $\begin{vmatrix} {x+3}&{x} &{x+2}\\ {x}&{x+1}& {x-1} \\ {x+2}&{2x}&{3x+1}\\ \end{vmatrix} $ is ________

The order and degree of the differential equation y =$ \frac {dp}{dx}x +\sqrt {a^2p^2+b^2}$ where $ p=\frac {dy}{dx}$(here $a$ and $b$ are arbitrary constants) respectively are

$Cu$ ions released from copper-releasing intra uterine devices (IUDs)

Jaundice is a disorder of

When domestic sewage mixes with river water

Which one of the following is the correct description of a certain part of a normal human skeleton?

$ABO$ blood groups in human beings are controlled by the gene $I$. has three alleles - $I^A$, $I^B$ and $i$. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur ?

During mitosis, ER and nucleolus begin to disappear at

Why do most chemical reaction rates increases rapidly as the temperature rises?

$ 1\, C $ electricity deposits

Pollution is

Potassium metabisulphite is a (an)

The number of metamers possible for $ C_4H_{10}O $ is

The wave number of the spectral line in the emission spectrum of hydrogen will be equal to $\frac {8}{9}$ times the Rydberg's constant if the electron jumps from _______

Equation of the circle centered at $(4, 3)$ touching the circle $x^2+y^2-1$ externally, is _____

A simple graph contains $24$ edges. Degree of each vertex is $3$. The number of vertices is .................