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The species in which N atom is in a state of sp hybridization is:

The final product obtained in the reaction

A photoelectric material having work-function ${\varphi }_0$ is illuminated with light of wavelength $\lambda (\lambda <\frac{hc}{{\varphi }_0})$. The fastest photoelectron has a de-Broglie wavelength ${\lambda }_d$. A change in wavelength of the incident light by $\Delta \lambda$ results in a change $\Delta {\lambda }_d$ in ${\lambda }_d$. Then the ratio $\frac{\Delta {\lambda }_d}{\Delta \lambda }$ is proportional to

Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?

It is not possible to write directly on blotting paper or newspaper with ink pen

Which among the following is not an alkane?

What is heat of adsorption

Hydrocarbon (A) on monobrination forms an alkyl bromide which by Wurtz reaction is converted to a gaseous hydrocarbon containing less than four carbon atoms. (A) is:

The spin only magnetic moment value (in B.M.) of the complex $[FeC{l}_6{]}^{4-}$ is:

The $\chi$ versus $\frac{1}{T}$ graph for an alloy of paramagnetic nature is shown in the figure. The Curie constant for this alloy is -



$[$Assume the states are far away from saturation$]$

Calculate the amount of water(g) produced by the combustion of 16 gram of Methane.

A $\text{U}$ tube of base length $l$ filled with same volume of two liquids of densities $\rho$ and $2\rho$ is moving with an acceleration $a$ on the horizontal plane. If the height difference between the two surfaces (open to atmosphere) becomes zero, then height $h$ is given by

The uncertainty in the position of an electron is zero, the uncertainty in its momentum be

In a cubic close packing of spheres in three dimensions, the co-ordination number of each sphere is:

DNA and RNA contain four bases each. Which of the following bases is not present in RNA?
(a) Adenine (b) Uracil (c) Thymine (d) Cytosine

Which of the following are non-planar species?

$N{O}_3^{-},As{O}_3^{3-},C{O}_3^{2-},Cl{O}_3^{-},S{O}_3^{2-},B{O}_3^{3-}$

The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order:

$K_{2}C{O}_3\left(I\right),MgC{O}_3\left(II\right),CaC{O}_3\left(III\right),BeC{O}_3\left(IV\right)$

On heating anhydrous $N{a}_{2}C{O}_3$, ........ is evolved