List of practice Questions

A gas mixture consists of $2$ moles of oxygen and $4$ moles of Argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is

The value of the reaction quotient (Q) for the following cell:\[ \text{Zn(s) | Zn}^{2+} (0.01 \text{ M}) || \text{Ag}^+ (1.25 \text{ M}) | \text{Ag(s)} \] is:

A steel rail of length $5\,m$ and area of cross section 40 $cm^2$ is prevented from expanding along its length while the temperature rises by $10^{\circ}C$. If coefficient of linear expansion and Young?s modulus of steel are $1.2 \times 10^{-5} \, K^{-1}$ and $2 \times 10^{11} \, Nm^{-2}$ respectively, the force developed in the rail is approximately :

Correct increasing order for the wavelengths of absorption in the visible region the complexes of $Co^{3+}$ is :

Let $F(x) = e^x, G(x) = e^{-x}$ and $H(x) = G(F(x))$, where $x$ is a real variable. Then $\frac{dH}{dx}$ at $x = 0$ is

The bulk modulus of a spherical object is $'B'$. If it is subjected to uniform pressure $'p'$, the fractional decrease in radius is :

Alexander Von Humbolt described for the first time:

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.