List of practice Questions

For a given reaction, $\Delta H =35.5\, kJ\, mol ^{-1}$ and $\Delta S =83.6\, JK ^{-1}\, mol ^{-1} .$ The reaction is spontaneous at $:$ (Assume that $\Delta H$ and $\Delta S$ do not vary with temperature)

The genetic material of M bacteriophage is _______

In some species of family Asteraceae seeds are produced without fertilization. It is called as ________

Which one from those given below is the period for Mendel's hybridization experiments ?

The hepatic portal vein drains blood to liver from :

With respect to the conformers of ethane, which of the following statements is true ?

Hypersecretion of Growth Hormone in adults does not cause further increase in height, because:

A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system :

The absolute temperature of a gas is increased to $ 16 $ times of the original temperature. The rms speed of its molecules will become

What will be the value of activation energy ( $ E_a $ in $ kJ $ ) and rate constant ( $ k\, in\, min^{-1} $ ) for the given equation at $ 27^{\circ}C $ ? The equation : $ lnk = - 2576/T+ 12.1 $

Amplitude modulation is the process of

Concentration of the $Ag^+$ ions in a saturated solution of $Ag_2C_2O_4$ is $2.2 \times 10^{-4}\, mol\, L^{-1}$ Solubility product of $Ag_2C_2O_4$ is :-

Amoeba is immortal because:

A uniform string of length $L$ and mass $M$ is fixed at both ends while it is subject to a tension $T$. It can vibrate at frequencies $(v)$ given by the formula (where $n = 1, 2, 3, .....$)

Let $A=\begin{pmatrix}x+2&3x\\ 3&x+2\end{pmatrix}, B=\begin{pmatrix}x&0\\ 5&x+2\end{pmatrix}$. Then all solutions of the equation det $(AB) = 0$ is

Out of $7$ consonants and $4$ vowels, words are formed each having $3$ consonants and $2$ vowels. The number of such words that can be formed is

The common chord of the circles $x^2 + y^2 - 4x - 4y = 0$ and $2x^2 + 2y^2 = 32$ subtends at the origin an angle equal to

The following equilibrium constants are given $N _{2}+3 H _{2} \rightleftharpoons 2 NH _{3} ; K _{1}$ $N _{2}+ O _{2} \rightleftharpoons 2 NO ; K _{2}$ $H _{2}+1 / 2 O _{2} \rightleftharpoons H _{2} O ; K _{3}$ The equilibrium constant for the oxidation of the $NH _{3}$ by oxygen to give $NO$ is:

An example of a sigma bonded organometallic compound is :

$HgCl_2$ and $I_2$ both when dissolved in water containing $I^-$ ions the pair of species formed is :

The equation of the plane through \((1, 2, -3)\) and \((2, -2, 1)\) and parallel to \(X-\)axis is

The ground state magnetic property of $B_2$ and $C_2$ molecules will be

In a close-packed body-centred cubic lattice of potassium, the correct relation between the atomic radius $(r)$ of potassium and the edge-length $(a)$ of the cube is

Reduction of the lactol  OH with sodium borohydride gives

Antibodies are synthesized by _______