NEET UG 2021 — Inorganic Chemistry

Noble gases are unreactive because

Which of the following molecules is non-polar in nature?

The incorrect statement among the following is:

Match List - I with List - II. <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">List-I</td><td colspan="2" rowspan="1">List-II</td></tr><tr><td>(a)</td><td>${\mathrm{PCl}}_{5}$</td><td>(i)</td><td>Square pyramidal</td></tr><tr><td>(b)</td><td>${\mathrm{SF}}_{6}$</td><td>(ii)</td><td>Trigonal planar</td></tr><tr><td>(c)</td><td>$\mathrm{Br}{F}_{5}$</td><td>(iii)</td><td>Octahedral</td></tr><tr><td>(d)</td><td>${\mathrm{BF}}_{3}$</td><td>(iv)</td><td>Trigonal bipyramidal</td></tr></tbody></table>Choose the correct answer from the options given below.

Ethylene diaminetetraacetate (EDTA) ion is:

Match List - I with List - II. <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">List-I</td><td colspan="2" rowspan="1">List-II</td></tr><tr><td>(a)</td><td>${[\mathrm{Fe}{(\mathrm{CN})}_{6}]}^{3-}$</td><td>(i)</td><td>$5.92\mathrm{BM}$</td></tr><tr><td>(b)</td><td>${[\mathrm{Fe}{({H}_{2}O)}_{6}]}^{3+}$</td><td>(ii)</td><td>$0\mathrm{BM}$</td></tr><tr><td>(c)</td><td>${[\mathrm{Fe}{(\mathrm{CN})}_{6}]}^{4-}$</td><td>(iii)</td><td>$4.90\mathrm{BM}$</td></tr><tr><td>(d)</td><td>${[\mathrm{Fe}{({H}_{2}O)}_{6}]}^{2+}$</td><td>(iv)</td><td>$1.73\mathrm{BM}$</td></tr></tbody></table>Choose the correct answer from the options given below.

In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?

Statement I: Acid strength increases in the order given as $\mathrm{HF}<<\mathrm{HCl}<<\mathrm{HBr}<<\mathrm{HI}$ Statement II: As the size of the elements $F,\mathrm{Cl},\mathrm{Br},I$ increases down the group, the bond strength of $\mathrm{HF},\mathrm{HCl}$ $\mathrm{HBr}$ and HI decreases and so the acid strength increases. In the light of the above statements, choose the correct answer from the options given below.

$Zr(Z=40)$ and $Hf(Z=72)$ have similar atomic and ionic radii because of:

Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.

${\mathrm{BF}}_{3}$ is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are:

The correct sequence of bond enthalpy of ' $\mathrm{C}-\mathrm{X}$ bond is: