List of practice Questions

The shape of $XeO_2F_2$ molecule is

The compound that undergoes decarboxylation most readily under mild condition is

The carboxyl functional group $(- COOH)$ is present in

In the cyanide extraction process of silver from argentite ore, the oxidising and reducing agents used are

The number of optically active products obtained from the complete ozonolysis of the given compound, is

Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?

Choose the correct reason(s) for the stability of the lyophobic colloidal particles.

Equivalent weight of potassium permanganate in alkaline solution is equal to $m$

Effective atomic number of the central metal ion, $Pt$, in the complex $\left[Pt\left(N H_{3}\right)_{6}\right]^{4+}$ is: (The atomic no. of $Pt$ is $78$)

Denitrification is carried out by

If $ lim_{ x \to \infty} \bigg( \frac{x^2 + x + 1}{x + 1} - ax - b \bigg) $ = 4, then

Cortisol is secreted by the adrenal cortex in response to stress. In addition to its function in a stress response, it functions in negative feedback by

Cohen and Boyer isolated an antibiotic resistance gene, by cutting out a piece of DNA form a plasmid which was responsible for conferring antibiotic resistance, in the year

$\left[C o(C N)_{6}\right]^{3-}$ , a complex ion of cobalt (III), absorbs radiations in violet region of the visible light. Its aqueous solution, therefore, appears

$ Cl?O $ bond order in perchlorate ion is

Calculate the acceleration due to gravity on the surface of a pulsar of mass $ M = 1.98 \times 10^{30}\, kg $ and radius $ R = 12 \,km $ rotating with time period $ T = 0.041 \,s. (G = 6.67 \times 10^{-11}MKS) $

Calculate the highest frequency of the emitted photon in the Paschen series of spectral lines of the hydrogen atom

Calculate the neutron separation energy from the following data: $ m (^{40}_{20} Ca) = 39.962591\,u $ , $ m (^{41}_{20} Ca) = 40.962278\,u $ , $ m_n = 1.00865, \,1u = 931.5\,Me V/c^2 $

Bohr model of hydrogen atom was unable to explain

An isolated population of humans with approximately equal numbers of blue-eyed and brown-eyed individuals was decimated by an earthquake. Only a few brown-eyed people remained to form the next generation. This kind of change in the gene pool is called a

Biogenetic law as given by Haeckel states that

Banana is vegetatively propagated by

The problem of electrical discontinuity caused by connective tissue separating the atria from ventricles is solved by

Argentaffin cells in human beings are found in

Lichen is obligate association of