List of practice Questions

In telolecithal egg the yolk is found

If the atomic number of an element is 33, it will be placed in the periodic table in the

$Na^+, Mg^{2+}, Al^3+ \, and \, Si^{4+}$ are isoelectronic. The order of their ionic size is

A block has been placed on a inclined plane with the slope angle $\theta$, block slides down the plane at constant speed. The coefficient of kinetic friction is equal to

Enzymes take part in a reaction and

A body starts from rest, what is the ratio of the distance travelled by the during the $4^{th}$ and $3^{rd}$ second ?

Benzene reacts with n-propyl chloride in the presence of anhydrous $AlCl_3$ to give

Tracheae of cockroach and mammal are similar in having

If ionisation potential for hydrogen atom is 13.6 eV, then ionisation potential for $He^+$ will be

Energy released in the fission of a single $^{235}_{92}U$ nucleus is 200 MeV. The fission rate of $^{235}_{92}U$ filled reactor operating at a power level of 5 W is

Which source is associated with a line emission spectrum?

A1 is more reactive than Fe but A1 is less'-easily corroded than Fe because

Which of the following species has four lone pairs of electrons?

Which of the following noble gas is not present in atmosphere ?

Balbiani rings are the sites of

Let [.] denote the greatest integer function and $f (x) = [\tan^2 x]$, then:

Internal energy and pressure of a gas per unit volume are related as

When is the deviation more in the behaviour of a gas from the ideal gas equation pV = nRT?

Nucleotide arrangement in DNA can be seen by

The catalyst used in the manufacture of polyethene by Zeigler method is

A larval stage occurs in the life history of all members of the group

The dimensional formul $ML^2T^{-2}$ represents

Turpentine oil is flowing through a tube of length $l$ and radius $r$. The pressure difference between the two ends of the tube is $P$. The viscosity of oil is given by $\eta=\frac{P(r^2-x^2)}{4vl}$ where $v$ is the velocity of oil at a distance $x$ from the axis of the tube. The dimensions of $\eta$ are

Genetic drift is change of

The osmotic pressure of a solution can be increased by