MCQ
The correct statement with respect to dinitrogen is
  • A
    liquid dinitrogen is not used in cryosurgery.
  • it can be used as an inert diluent for reactive chemicals.
  • C
    it can combine with dioxygen at $25^{\circ} C$
  • D
    $N _{2}$ is paramagnetic in nature.

Answer

Correct option: B.
it can be used as an inert diluent for reactive chemicals.
b
$(1)$ Liquid nitrogen is used as a refreigerant to preserve biological material food items and in cryosurgery.

$(2)$ In iron and chemical Industry inter dilluent for reactive chemicals

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

$\left[ {Co{{\left( {N{H_3}} \right)}_5}N{O_2}} \right]C{l_2}$ and $\left[ {Co{{\left( {N{H_3}} \right)}_5}\left( {ONO} \right)} \right]C{l_2}$ are related to each other as
The starting substance for the preparation of $C{H_3}I$ is
In the following sequence of reactions a compound

$A$, (molecular formula $\left.\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{2}\right)$ with a straight chain structure gives a $C_{4}$ carboxylic acid. $A$ is :

$A \frac{{Li} {A} {H} {H}_{4}}{{H}_{3} {O}^{+}} \longrightarrow B \stackrel{\text { Oxidation }}{\longrightarrow} {C}_{4}-$ carboxylic acid

  Column $-I$ (various
solutions)
  Column $-II$
(Their freezing
point )
$a$ $0.1\,M$ $BaCl_2$ solution $p$ $271\,K$
$b$ $0.1\,M$ $NaCl$ solution $q$ $270\,K$
$c$ $0.1\,M\, K_3 [Fe(CN)_6]$ solution $r$ $268\,K$
$d$ $0.1\,M\, Al_2 (SO_4)_3$ solution $s$ $269\,K$

Given : Freezing point of $0.1\,M$ sucrose solution $= 272\,K$ and $F.pt.$ of water $= 273\,K$ 

Which of the following option show correct matches ?

Which one is the most likely formula of $CrCl_3.6H_2O$ if $\frac{2}{3}$ of total chlorine of  the compound is $ppt$. by adding $AgNO_3$ to its aqueous solution: 
The name of the compound having the structure $ClC{H_2}C{H_2}COOH$ is
If $E_{A{u^ + }/Au}^o$ is $1.69\, volt$ and $E_{A{u^{ + 3}}/Au}^o$ is $1.40\, volt$ then $E_{A{u^ + }/A{u^{ + 3}}}^o$ will be ........... $\mathrm{V}$
A hypothetical electrochemical cell is shown below.

$A \,|\, A^+\, (xM)\, ||\, B^+ \,(yM)\, |\, B$

The $emf$ measured is $+ 0.20\, V.$ The cell reaction is

For $A + B \longrightarrow C + D$ ; $\Delta H =  - 20\,kJ/mol$ the activation energy of the forward reaction is $85\, kJ\, mole^{-1}$. The activation energy for backward reaction is.....$KJ/mo{l^{ - 1}}$
For a given reaction $3A + B \to C + D$ the rate of reaction can be represented by