Download App

p -Block elements - ll — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
The non-metal that does not exhibit positive oxidation state is
  • A
    Chlorine
  • B
    Iodine
  • ✓
    Fluorine
  • D
    Oxygen
✓

Answer

Correct option: C.
Fluorine
c
chlorine is more electronegative than iodine hence it can displace iodine from $KI$ but reverse is not possible. in $3 rd$ reaction $Zn$ is more reactive because it is above hydrogen in electrochemical series hence it will replace hydrogen. similar for $2 nd$ reaction.

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 p -Block elements - ll→p -Block elements - ll — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Which of the following statements is not correct about the electronic configuration of gaseous chromium atom
→
Transition metals are coloured due to the following electronic transition:
→
Highest stable $Mn$ fluoride is $MnF_4$ where as highest $Mn$ oxide is $Mn_2O_7$ due to
→
In trimer form of sulphur trioxide, each sulphur atom is bonded with
→
Which of the following has highest ratio of reducing hydrogen $/$ $OH :$
→
Chlorine cannot displace
→
A solution contains $25\%$  ${H_2}O$ , $25\% {C_2}{H_5}OH$ and $50\%$ $C{H_3}\,COOH$ by mass. The mole fraction of ${H_2}O$ would be
→
A solution of m-chloroaniline, $m-$chlorophenol and $\mathrm{m}$ -chlorobenzoic acid in ethyl acetate was extracted initially with a saturated solution of $\mathrm{NaHCO}_{3}$ to give fraction $\mathrm{A}$. The left over organic phase was extracted with dilute $NaOH$ solution to give fraction $\mathrm{B}$. The final organic layer was labelled as fraction $\mathrm{C}$. Fractions $\mathrm{A},\mathrm{B}$ and $\mathrm{C},$ contain respectively 
→
Dimethyl ether when heated with excess $HI$ gives
→
Given below are two statements:

Statement $(I)$ : Aminobenzene and aniline are same organic compounds.

Statement $(II)$ : Aminobenzene and aniline are different organic compounds.

In the light of the above statements, choose the most appropriate answer from the options given below:

→