Explore topic-wise InterviewSolutions in Current Affairs.

When 2-butyne is passed through red hot iron tube, the product formed is:

Dual
behaviour of matter proposed by de Broglie led to the discovery of
electron microscope often used for the highly magnified images of
biological molecules and other type of material. If the velocity of
the electron in this microscope is 1.6 × 10⁶
ms^–1,
calculate de Broglie wavelength associated with this electron.

Diborane$\left(B_2{H}_6\right)$ reacts independently with$O_2$ and $H_{2}O$ to produce:

Which is not the pair of enantiomers?

Gold number
is [MP PET/PMT 1988]

The van der waals constant for $HCl$ are $a=371.843{\text{kPa.dm}}^6{\text{mol}}^{–2}$ and $b=40.8{\text{cm}}^3{\text{mol}}^{-1}$. Find the critical pressure of this substance.

"The acidic nature of alcohols is due to the polar nature of OH bond. And electron releasing group (-CH3, -C2H5) increases electron density on oxygen tending to decrease the polarity of O-H bond."

Please explain how increase in electron density on Oxygen atom decreases polarity.

Crystal field stabilization energy for low spin $d^4$ octahedral complex is:

Which of the substances is not likely to be a replaced by other minerals during fossilization?

p - character in ${sp}^2$ hybridization is:

When 0.2 mol $CrC{l}_3.6H_{2}O$ is treated with excess of $AgN{O}_3$, 0.4 mol of AgCl are obtained. The formula of the complex is

Indicate which nitrogen compound amongst the following would undergo Hoffmann reaction (i.e., reaction with $B{r}_2$ and strong KOH) to furnish the primary amine (R - $N{H}_2$)?

The reagent with which both acetaldehyde and acetone react easily is

The reagent with which the following reaction is best accomplished is :

Elevation of boiling point of a $1\text{M}$ aqueous glucose solution (density $=1.2\text{g/ml}$) is:

($K_b$ is molal boiling point elevation constant)

Question 43

Arrange the following bonds in order of increasing ionic character giving reason.

N - H, F - H, C - H and O - H

In the given reaction $C{H}_3-C{H}_2-Br$ $\stackrel{Na/dryether}{\to }$ Product; Product will be:

Number of moles of MnO₄^- required to oxidize 1 mole of ferrous oxalate Completely in acidic medium will be?

When 3g of a non electrolytic solute was dissolved in 100g of water, the freezing point of the solution was lowered to 272.07K. Then the solute is likely to be

a)Urea b)Sucrose c)Acetic acid d)Glucose

In concersion of lime-stone to lime,

$CaC{O}_3\left(s\right)\to CaO\left(s\right)+C{O}_2\left(g\right)$ the values of $\Delta H^0$ and $\Delta S^0$ are $+179.1kJmo{l}^{-1}$ and $160.2J/K$ respectively at 298 K and 1 bar. Assuming that $\Delta H^0$ and $\Delta S^0$ do not change with temperature, temperature above which conversion of limestone to lime will be spontaneous is

Among the following four compounds

$\left(i\right)$ Phenol

$\left(ii\right)$ methyl phenol

$\left(iii\right)$ meta-nitrophenol

$\left(iv\right)$ para-nitrophenol

The acidity order is:

What is intensive and extensive properties of thermodynamics?

What are the differences between order of reaction and molecularity of reaction?