Download App

3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
The correct order of reactivity of halogen is
  • A
    Flourine $>$ bromine $>$ chlorine $>$ iodine
  • ✓
    Flourine $>$ chlorine $>$ bromine $>$ iodine
  • C
    Iodine $>$ bromine $>$ chlorine $>$ flourine
  • D
    Bromine $>$ chlorine $>$ flourine $>$ iodine
✓

Answer

Correct option: B.
Flourine $>$ chlorine $>$ bromine $>$ iodine
b
(b) Fluorine is more reactive than chlorine, bromine and iodine.

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

Explore more

More "M.C.Q (1 Marks)" from 3. Classification of elements and periodicity in properties→3. Classification of elements and periodicity in properties — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

In a $500\,mL$ capacity vessel $CO$ and $Cl_2$ are mixed to form $COCl_2$. At equilibrium it contains $0.2\,mole$ of $COCl_2$ and $0.1\,mole$ of each of $CO$ and $Cl_2$. The equilibrium constant $K_c$ for reaction, $\;CO + C{l_2}\,\, \rightleftharpoons \,COC{l_2}$ is
→
The number of electrons present in all the completely filled subshells having $\mathrm{n}=4$ and $\mathrm{s}=+\frac{1}{2}$ is)______________.  (Where $\mathrm{n}=$ principal quantum number and $\mathrm{s}=$ spin quantum number)
→
What is the $pH$  of $0.1\,M\,N{H_3}$
→
In acidic medium, $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}$, shows oxidising action as represented in the half reaction

$\mathrm{Cr}_2 \mathrm{O}_7^{2-}+\mathrm{XH}^{+}+\mathrm{Ye}^{-} \rightarrow 2 \mathrm{~A}+\mathrm{ZH}_2 \mathrm{O}$

$\mathrm{X}, \mathrm{Y}, \mathrm{Z}$ and $\mathrm{A}$ are respectively are:

→
If bond enthalpies of $N \equiv N\,,\,\,H - H$ and $N -H$ bonds are $x_1, x_2$ and $x_3$ respectively, $\Delta H_f^o$ for $NH_3$ will be
→
Which will show maximum non-metallic character
→
Hydrochloric acid solutions $A$ and $ B$ have concentration of $0.5 \,N$ and $0.1 \,N$ respectively. The volume of solutions $A$ and $B$ required to make $2$ litres of $0.2\, N$ hydrochloric are
→
Hydrogen bonding is maximum in
→
What is the shortest wavelength for Paschen series of $Li^{2+}$ ion
→
Choose the Incorrect statement/ reaction
→