List of practice Questions

When a lens of refractive index $ n_{1} $ is placed in a liquid of refractive index $ n_{2}$ the lens looks to be disappeared only if

The predominant antibody in saliva is

The long and short arms of chromosome are designated respectively as

The density of a nucleus of mass number $A$ is proportional to

Solute potential of a solution is always

IUCN stands for

Lactobacillus mediated conversion of milk to curd results because of

Hotspots of biodiversity means

The beginning of understanding genetic transformation in bacteria was made by

Conservation in the natural habitat is

Colour blindness is due to defect in

$ CH_3COOH $ when reacts with $ C_2H_5OH $ gives a product. The same product is obtained by which reaction ?

$ C_v $ for $O_2 $ is $\frac{ 5}{2} $ R with increase in temperature it becomes $ \frac{ 7}{2} $ R due to a

When same quantity of electricity is passed for the amount of $Cu$ and $Cr$ deposited are respectively $0.375\, g$ and $0.30\, g$. Ratio of electrochemical equivalents of $Cu$ and $Cr$ is

Boiling point of ethyl alcohol is greater than ether due to

The diagonal partner of element $B$ is

Biradial symmetry is found in

Micropropagation is a technique

Root cells of wheat has 2n = 42 chromosomes. Which one of the following is the basic chromosome number of Wheat ?

Quiescent centre is found in plants at :

In a DNA molecule distance between two bases is

When the cell is fully turgid, its

Bile salts act as activator of which enzyme ?

First genetically modified plant commercially released in India is

Bell-shaped polygonal pyramid indicates