List of practice Questions

What is the product B in the reaction:

Azolla is used as a biofertilizer because it

Yeasts such as Saccharomyces cerevisiae are used in baking industry Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.

Mohrs salt is:

Which of the following give ammonia, on heating with $ NaOH $ ?

The amount of $H_{2}S$ , required to precipitate $1.69\,g.\, BaS$ from $BaCl_{2}$ solution is:

$pH$-scale was proposed by:

Which of the following is not a surfactant ?

The freezing point of equimolal aqueous solution will be highest for

Which one is a vector quantity?

Which one of the following is a sesamoid bone?

Which one of the following is not a Chalcogen?

Which one of the following pair of elements has similar properties?

Which one proves transverse nature of waves?

What is the co-ordination number of sodium in $Na_2O$ ?

Water rises in a vertical capillary tube upto a length of $10 \,cm$. If the tube is inclined at $ 45{}^\circ $ , the length of water column risen in the tube will be

Viroids have

Universal recipient blood group is

Two identical photo cathodes receive light of frequencies $f_1$ and $f_2$. if the velocities of the photoelectrons (of mass m) coming out are respectively $v_1$ and $v_2$, then

Two coils are placed close to each other. The mutual inductance of the pair of coils depends upon

To demonstrate the phenomenon of interference we require two soruces which emit radiation of

Three charges $-q_1, +q_2$ and $-q_3$ are placed as shown in the figure. The x-component of the force on $-q_1$ is proportional to

The work done in placing a charge of $8 ??10^{-18}$ coulomb on a condenser of capacity 100 micro-farad is

The velocity with which a projectile must be fired so that it escapes earth's gravitation does not depend on

The term Meiosis was given by: