List of practice Questions

Homozygous purelines in cattle can be obtained by:

In single Krebs Cycle decarboxylation takes place at ________ steps

HCG is secreted by _________

The post-fertilization change involves _______.

Organisms possessing strong and stout forelimbs with clawed digits show ______ adaptations

Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement :

Select the mismatch

The association of histone H1 with a nucleosome indicates

The final proof for DNA as the genetic material came from the experiments of :

Mixture of chloroxylenol and terpineol acts as

A gas is allowed to expand in a well insulated container against a constant external pressure of $2.5\, atm$ from an initial volume of $2.50\, L$ to a final volume of $4.50\, L$. The change in internal energy $\Delta U$ of the gas in joules will be

Which one of the following plants reproduces vegetatively by epiphyllous buds?

Photodiode is a device

In preparation of sulphuric acid from sulphur dioxide in lead chamber process. What substance is used as a catalyst ?

Which one of the following is NOT a disadvantage of self pollination?

The highest rate of photosynthesis in green plants is in _____ and _____ region of light spectrum.

Which one of the following statement is not valid for aerosols ?

In Aulosira, Tolypothrix and Nostoc, _______ are the sites for nitrogen fixation.

A slender, prostrate subaerial branch of the stem which creeps along the ground helping in vegetative reproduction is

Fruit and leaf drop at early stages can be prevented by the application of:

The photoelectric threshold wavelength of silver is $3250 \times 10^{-10}m$. The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength $2536 \times 10^{-10} m $ is (Given $ h = 4.14 \times 10^{-15} eVs$ and $c = 3 \times 10^8 \, ms^{-1}$)

The process of separation and purification of expressed protein before marketing is called :

The x and y coordinates of the particle at any time are $x = 5t - 2t^2$ and $y = 10t$ respectively, where $x$ and $y$ are in meters and t in seconds. The acceleration of the particle at $t = 2s$ is :

Name the gas that can readily decolourise acidified $KMnO_4$ solution :