List of practice Questions

Which of the following has the smallest number of molecules?

Which one of the following compounds has $ s{{p}^{2}} $- hybridisation?

Number of lone pair (s) in $ XeO{{F}_{4}} $ is/are

The decomposition of hydrogen peroxide can be slowed by the addition of acetamide. The latter acts as a

The starting material used in Solvas process are

If the coefficient of mutual induction of the primary and secondary coils of an induction coil is $5\, H$ and a current of $10 A$ is cut-off in $5 \times 10^{-4} s$, the emf inducted (in volt) in the secondary coil is :

In ${TeCl4}$ the central atom tellurium involves

Four independent waves are represented by equations : (1) $X_{1}=a_{1} \sin \omega t$ (2) $X_{2}=a_{1} \sin 2 \omega t$ (3) $X_{3}=a_{1} \sin \omega_{1} t$ (4) $X_{4}=a_{1} \sin (\omega t+\delta)$ Interference is possible between waves represented by equations :

A galvanometer acting as a voltmeter will have

Carbylamine reaction is given by aliph

$A B C D$ is a rectangle. At corners $B, C$ and $D$ of the rectangle are placed charges $+10 \times 10^{-10} C , \quad-20 \times 10^{-12} C \quad$ and $10 \times 10^{-12} C$, respectively. Calculate the potential at the fourth corner. (The side $A B=4 cm$ and $B C=3 cm )$

The ninth term of the expansion $\left(3x-\frac {1}{2x}\right)^8$ is

The number of gram molecules of chlorine in $6.02 \times 10^{25}$ hydrogen chloride molecules is -

Archaeopteryx is connecting link between

Edaphology is

Benzene reacts with chlorine in sunlight to give a final product

A vector perpendicular to the plane containing the points $A (1, -1, 2), B (2, 0, -1), C (0,2,1)$ is

The lateral roots originate from

The largest RBC's have been seen in

The net gain of ATP during glycolysis is

Match the following: Column - I Column II (a) Leishmiania-donavani (p) Malaria (b) Wuchereria-bancrofti (q) Amoebiasis (c) Trypanosoma-gambiense (r) Kala azar (d) Entamoeba-histolytica (s) Sleeping sickness (t) Filariasis

The tumor inducing capacity of Agrobacterium - tumaefaciens is located in large extra chromosomal plasmids called

In which of the following organisms, self fertilization is seen ?

The characteristic of an essential element is that it