List of practice Questions

In the relation, $p = \frac{\alpha}{\beta} e^{-\frac{\alpha Z}{k\theta}}$ $p$ is pressure, $Z$ is distance, $k$ is Boltzmann constant and $\theta$ is the temperature. The dimensional formula of $\beta$ will be

Which one of the following is an incorrect statement ?

Which statement is correct for muscle contraction 

The oxidation number of cobalt in $K[Co(CN)_4]$ is

Difference in gram ⊕ and gram bacteria is due to

In plants inulin and pectin are

Element necessary for the middle lamella

What is true for monoclonal antibodies

Which fish selectively feed on larva of mosquito

Which one of the following is correct match

Similarities in organism with different genotype indicates

Which of the following is correct order of the evolutionary history of man

Which statement is correct about centre of origin of plant

Forthcoming generation are less adaptive than the parental generation due to

What is true for archaebacteria

Two springs A and B having spring constant K$_A$ and K$_B$ (K$_A$ = 2K$_B$) are stretched by applying force of equal magnitude. If energy stored in spring A is E$_A$ then energy stored in B will be

ABCD is a square loop made of an uniform conducting wire. The current enters the loop at A and leaves at D. The magnetic field is

A projectile is moving at $20\,m\,s^{-1}$ at its highest point, where it breaks into two equal parts due to an internal explosion. One part moves vertically up at $30\,m\,s^{-1}$ with respect to the ground. Then the other part will move at

The unpleasant smell of carbylamine is obtained when chloroform and alcoholic KOH are heated with

For certain first order reaction m, 75% of the reaction complete in 30 min. How much time it require to complete 99.9% of the reaction?

A ray of light passes through four transparent media with refractive indices $\mu_1,\mu_2,\mu_3$ and $\mu_4$ as shown in the figure. The surfaces of all media are parallel. If the emergent ray CD is parallel to the incident ray AB, we must have

In a Young's double slit experiment, 12 fringes are observed to be formed in a certain segment of the screen when light of wavelength 600 nm is used. If the wavelength of light is changed to 400 nm, number of fringes observed in the same segment of the screen is given by

Ratio of kinetic energy and rotational energy in the motion of a disc is:

Hormone responsible for senescence