List of top Physics Questions

Among the following acids which has the lowest $pK_a$ value ?

The temperature dependence of rate constant $(k)$ of a chemical reaction is written in terms of Arrhenius equation $k=A e^{-E_{\alpha} / R T}$. Activation energy $\left(E_{a}\right)$ of the reaction can be calculated by ploting

Among the following components of cement which is present in highest amount?

The solubility product of $As _{2} O _{3}$ is $10.8 \times 10^{-9}$. It is $50 \%$ dissociated in saturated solution. The solubility of salt is

Which of the following are totipotent?

Male cockroach and female cockroach can be differentiated by

The pathogen and the vector of the malarial parasite respectively are

Maximum cranial capacity was in

Third moulting in the life cycle of Ascaris takes ^ place in

Gynandromorphs are animals having

Amoeba was discovered by

Innominate is

Bidder?? canal is present in

Amniocentesis is a process to

Amniotic fluid protects foetus from

Which one is a purine pair

A base, as defined by Bronsted theory, is a substance which can

Nylon-66 is made by using

For the reaction $H_2(g) + I_2(g) \to 2HI (g)$ the change in enthalpy ($\Delta H$) will be

Vapour pressure of benzene at $30^{\circ} C$ is $121.8\, mm$. when $15\, g$ of a non-volatile solute is dissolved in $250\, g$ of benzene, its vapour pressure is decreased to $120.2\, mm$. The molecular weight of the solute is

Which of the following compound, on reaction with $NaOH$ and $Na _{2} O _{2}$, gives yellow colour?

In which of the following methane is formed?

A solution wiht $pH = 2$ is more acidic than one with a $pH = 6$, by a factor

Megasporophyll of Cycas has the same nature as

If turgor pressure becomes equal to the wall pressure, then