List of practice Questions

The alkali metals dissolve in ammonia to give a deep blue solution which is conducting in nature. $M+\left(x+y\right) NH_{3} \to\left[M\left(NH_{3}\right)_{x}\right]^{2+}+2\left[e\left(NH_{3}\right)_{y}\right]^{-}$ Which of the following is not true about the solutions of alkali metals in liquid ammonia ?
The alkali metals have an outer electronic configuration of
The amino acid attaches to the $tRNA$ at its
The adjacent graph shows the extension $(\Delta l)$ of a wire of length 1 m suspended from the top of a roof at one end with a load W connected to the other end. If the cross-sectional area of the wire is $10^{-6} m^2 , $ calculate the Young's modulus of the material of the wire.
The addition of HCl will not suppress the ionisation of
The acronym LASER stands for
The activity of a radioactive sample is measured as $N_{0}$ counts per minute at $t = 0$ and $N_{0}/e$ counts per minute at $t = 5$ minutes. The time (in minutes) at which the activity reduces to half its value is
The addition of HBr to an alkene in the presence of peroxide is an example of :
The accumulation of uric acid crystals in the region of joints resulting in painful movements causes
The accuracy in the measurement of the diameter of hydrogen atom as $1.06 \times 10^{-10}$ m is
The acid used for etching the glass is
The acidic character of oxides of group 15, $N_2O_3, P_2O_3, As_2O_3, Sb_2O_3$ (in this order)
The acceleration due to gravity at the poles and the equator is $g_p$ and $g_e$ respectively. If the earth is a sphere of radius $R_E$ and rotating about its axis with angular speed 0), then $g_p - g_e$ is given by
The accompanying diagram shows the uterine tubes of four women ($P, Q, R$ and $S$).
In which two women is fertilisation impossible at present?
The $A.M., H.M. $ and $G.M.$ between two numbers are $\frac {144} {15}$ 15 and 12,. but not necessarily in this order. Then $H.M., G.M. $ and $A.M.$ respectively are
The abbreviation $AIDS$ stands for
The absence of centrioles from higher plant cells means that during somatic cell nuclear division there is :
The absolute zero is the temperature at which -
The 10th common term between the series $3 + 7 + 11 + ......$ and $ 1 + 6 + 11 + ......$ is
The 10th term of the sequence $\sqrt3,\sqrt{12}, \sqrt{27}......... $ is
The $6563 \,?$ $H_\alpha$ line emitted by hydrogen in a star is found to be red-shifted by $15\,?$. The speed with which the star is receding from the earth is
The $7^{th}$ term in the expansion of $\left(x^{2}+\frac{1}{x^{2}}+2\right)^{n} $ is
Tetradynamous stamens are found in
Tetrafluoroethene is the monomer of
Thalamus is flask-shaped perigynous in