List of practice Questions

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

Jaundice is a disorder of

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

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?

Pollution is

$ 1\, C $ electricity deposits

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 _____

If $A$ is a $3 \times 3$ nonsingular matrix and if $|A | = 3$, then $|(2A)^{-1}|$= _______

The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?

The digit in the unit place of $2009! + 3^{7886}$ is

The type of hybridisation of nitrogen atom in $ {NH_3}$ is

Gibb's free energy G is defined as

Which of the following ores will be concentrated by froth floatation method?