List of practice Questions

For every $CO _{2}$ molecule entering the Calvin cycle, the number of ATP and NADPH required is

Falling of floral parts, leaves and fruits from the mother plant is called

Closure of stomata is caused by

Clover leaf model of tRNA was suggested by

Chiasmata formation takes place during

Calculate the ratio of $ rms $ speeds of oxygen gas molecules to that of hydrogen gas molecules kept at the same temperature.

Bag $I$ contains $3$ red and $4$ black balls, while another bag $II$ contains $5$ red and $6$ black balls. One ball is drawn at random from one of the bags and it is found to be black. The probability that it was drawn from bag $II$ is

Avalanche breakdown in a $ p $ - $ n $ junction diode is due to

Arrange the following in increasing order of their basic strength : $CH _{3} NH _{2}( I ),\left( CH _{3}\right)_{2} NH ( II ),\left( CH _{3}\right)_{3} N ( III )$, $C _{6} H _{5} CH _{2} NH _{2} (IV)$

Any digital circuit can be realised by repetitive use of only

An object moving at a speed of $ 5\,m/s $ towards a concave mirror of focal length $ f = 1\, m $ is at a distance of $ 9\, m $ . The average speed of the image is

An $n-p-n$ transistor is biased to work as an amplifier. Which of the following statements is false?

The synthesis of $3$-octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are

The reagent(s) used for softening the temporary hardness of water is(are)

The ionisation isomer of $[Cr(H_2O )_4Cl(NO_2 )]Cl$ is

Assuming that Hund's rule is violated, the bond order and magnetic nature of the diatomic molecule $B_2$ is

Aleuroplasts in a cell stores

Which one of the following is not correct?

Cells divide and new cells are formed from pre-existing cells. This concept was given by

A typical nucleosome contains

Find the correct match.

Which of the following is not correctly paired?

Find the incorrect statement.

One of the following is not the characteristic feature of cyanobacteria.

Heterotrophic fungi can live as