List of practice Questions

The sum of the series $\log _{4} 2-\log _{8} 2+\log _{16} 2-\ldots$ is

The velocity of efflux of a liquid through an orific in the bottom of the tank does not depend upon

The well known urinary antiseptic urotropine is formed when formaldehyde reacts with

The work done in placing a charge of $8 \times 10^{-18} \, C$ on a capacitor of capacity $100\, \mu F$ is

This reaction is called

Which anion is the weakest base?

Which of the following compounds will react with two moles of $CH_3MgBr$ ?

Which of the following does not contain any coordinate bond?

Which of the following is an artificial edible colour ?

Which of the following is not an example of perfectly inelastic collision

$\displaystyle\lim_{x\to0} \frac{\sin x}{x}$ is equal to

Two glass bulbs $A$ and $B$ are connected by a very small tube having a stop-cock. Bulb $A$ has a volume of $100\, cm^3$ and contained the gas while bulb $B$ was empty. On opening stop-clock, the pressure fell down to $40\%$. The volume of the bulb $B$ must be

For the reaction, $C _{3} H _{8}( g )+5 O _{2}( g ) \longrightarrow 3 CO _{2}( g )+4 H _{2} O ( l )$ at constant temperature, $\Delta H-\Delta E$ is

300 cal of heat is supplied to raise the temperature of 50 g of air from $ 20{}^\circ C $ to $ 30{}^\circ C $ without any change in its volume. Change in internal energy per gram of air is

Final pressure is higher than initial pressure of a container filled with an ideal gas at constant temperature. What will be the value of equilibrium constant?

The speed of earth's rotation about its axis is co. Its speed increases to $ x $ times to make effective acceleration due to gravity equal to zero at the equator, $ x $ is

The weight of iron which will be converted into its oxide $\left( Fe _{3} O _{4}\right)$ by the action of $18\, g$ of steam on it will be (At. wt. of $Fe =56$ )

During the formation of a chemical bond

The speed of scooter, car and train are in the ratio of 1 : 4 : 16. If all of them cover equal distance then the ratio of time taken/velocity for each of the vehicle is:

A wooden cube (density of wood $'d'$) of side $'\ell'$ floats in a liquid of density $'\rho'$ with its upper and lower surfaces horizontal. If the cube is pushed slightly down and released, it performs simple harmonic motion of period $'T'$. Then, $'T'$ is equal to :

In the questions below, the sentences have been given in Active/Passive voice. From the given alternatives, choose the one which best expresses the given sentence in Passive /Active voice
You should open the wine about three hours before you use it.

Protons or hydrogen ions produced by photolysis of water accumulate in the lumen of thylakoids. Photolysis of water takes place in inner membrane of thylakoid.

The correct IUPAC name of the compound

The $sp^3d^2$ hybridization of central atom of a molecule would lead to