List of practice Questions

The wave theory of light, in its original form, was first postulated by-

If a liquid does not wet glass, its angle of contact is :

Electron of mass $m$ and charge $q$ is travelling with a speed $v$ along a circular path of radius $r$ at right angles to a uniform magnetic field of intensity $B$. If the speed of the electron is doubled and the magnetic field is halved the resulting path would have a radius:

Incorrect statement for pyrophosphorus acid $H_4P_2O_5$ is :

Isopropyl bromide on Wurtz reaction gives :

Solvay process is used for the manufacture of:

The induction coil works on the principle of :

The oxidation number of oxygen in hydrogen peroxide is:

The point $(4, - 3)$ with respect to the ellipse $4x^2 + 5y^2 = 1$ is :

The work done in carrying a charge $q$ once round a circle of radius $r$ with a charge $Q$ at the centre is :

Which gas has the highest partial pressure in atmosphere?

, A will have configuration :

For the gaseous reaction involving the complete combustion of isobutane :

For the reaction (at $1240 \,K$ and $1$ atm.) $ CaCO_3 (s) \rightarrow CaO(s) + CO_2 (g) $ $\Delta H = 176 \, kJ/ mol; \Delta E$ will be :

The number of common tangents to circle $x^{2}+y^{2}+2 x+8 y-23=0$ and $x^{2}+y^{2}-4 x-10 y+9=0$, is.

Let $\alpha, \beta, \gamma$ and $\delta$ are four positive real number such that their product is unity, then the least value of $(1+\alpha)(1+\beta)(1+\gamma)(1+\delta)$ is:

Value of $\displaystyle\sum_{ k =1}^{6}\left(\frac{2 k \pi}{7}\right)- i \cos \left(\frac{2 k \pi}{7}\right)$ is equal to.

The equation of plane passing through a point $A (2,-1,3)$ and parallel to the vectors $a =(3,0,-1)$ and $b =(-3,2,2)$ is:

Milk of magnesia is used as:

Density of liquid in CGS system is $ 0.625\,g/cm^{3} $ What is its magnitude in SI system?

Critically examine the statements given in italics against each question.
The world is a great book; one who does not travel reads only one page.Which statement best elucidates the above?

Critically examine the statements given in italics against each question.
Rich, not gaudy, apparel proclaimeth the man.Which of the following sentences explains the above statement?

Critically examine the statements given in italics against each question.
Uneasy lies the head that wears the crown. What does this mean?

Critically examine the statements given in italics against each question.
The circumstances of birth are irrelevant. What you do with the gift of life, determines what you are. Which statement best explains this?

Critically examine the statements given in italics against each question.
Your mind is like a parachute; it works best when it is open.What does the statement imply?