Oxidizing and Reducing Character of Halogens

Q. Among the following choose the most acidic compound.

1. Phenol
2. Carboxylic acid
3. Ethyl alcohol
4. Ether

Q. Arrange the following compounds in correct order of acidic strength.

1. $HCOOH>C{H}_{3}COOH>C_6{H}_{5}OH>C_2{H}_5-OH$
   
2. $C{H}_{3}COOH>HCOOH>C_6{H}_{5}OH>C_2{H}_5-OH$
   
3. $C_6{H}_{5}OH>HCOOH>C{H}_{3}COOH>C_2{H}_5-OH$
   
4. None of these

Q. The correct order of acidic strength of the following alcohols is

1. $I<II<III<IV$
2. $IV<III<II<I$
3. $III<IV<I<II$
4. $III<II<IV<I$

Q.

Why halogens are strong oxidizing agents?

Q. Consider the following sulphur based oxoacids. $H_{2}S{O}_3,H_{2}S{O}_4,H_2{S}_2{O}_8$ and $H_2{S}_2{O}_7$. Amongst these oxoacids, the number of those with peroxo $(O-O)$ bond is ______.

Q. Find out the number of compounds which are more acidic than benzoic acid among the following.

Q. Which of the following as the lowest $p{K}_a$ value?

1. 
2. 
3. 
4. 

Q. The increasing order of electrical conductivity of the following aqueous solution is:
$0.1M$ formic acid $\left(X\right)$,
$0.1M$ acetic acid $\left(Y\right)$,
$0.1M$ benzoic acid $\left(Z\right)$.

1. $X>Y>Z$
2. $Y<Z<X$
3. $Z<X<Y$
4. $X<Z<Y$

Q. A solution of potassium bromide is treated with each of the following. Which one would liberate bromine?

1. Hydrogen iodide
2. Sulphur dioxide
3. Chlorine
4. Iodine

Q.

Why are halogens strong oxidizing agents ?

Q. The $S{N}_1$ reaction cannot be carried out in which of the following media?

1. Acetic acid
2. Acetone
3. Ethanol
4. Water

Q.

Elements with higher electronegativity are good oxidizing agents. Give reasons.

Q. Among the following, the elements which produce $H_2$ gas upon reaction with $NaOH.$
$Mg,Ca,Al,Zn,Pb,Sn,SiC,C$

1. $Al,Zn,Pb,Ca$ only
2. $Al,Zn,Pb,Sn,Mg,Ca$ only
3. $Sn,SiC,C,Mg,Ca$ only
4. $Al,Zn,Pb,Sn$ only

Q. Which of the following ammonium salt will produce dinitrogen on heating?

1. $(N{H}_4{)}_{2}S{O}_4$
2. $N{H}_{4}Cl$
3. $N{H}_{4}N{O}_2$
4. $N{H}_{4}N{O}_3$

Q. Aqueous solution of $N{a}_{2}S{O}_3$ on reaction with $C{l}_2$ gives:

1. $N{a}_2{S}_4{O}_6$
2. $NaHS{O}_4$
3. $NaOH$
4. $N{a}_{2}S{O}_4$

Q.

Interhalogen compounds are covalent due to:

1. High electronegativity difference between halogens

2. Strong oxidizing nature

3. High reactivity

4. Low electronegativity difference between halogens

Q.

Explain the following with proper reason: Halogens Are Strong Oxidising Agents?

Q. Which of the following displaces bromine from an aqueous solution of bromide ions?

1. 
2. 
3. 
4. 

Q. Which of the following dissociates to give $H^{+}$ most easily?

1. $H_{2}O$
2. $H_{2}S$
3. $H_{2}Te$
4. $H_{2}Se$

Q. $p{K}_a$ value is greater for

1. 
2. 
3. 
4. Picric acid

Q. Why phenol is more acidic than ethyl alcohol?

Q.

What happen when a mixture of hydrogen(${\mathrm{H}}_2$) and oxygen(${\mathrm{O}}_2$) is lit ?

Q. $A+dil.HN{O}_3\to B+NO+S+H_{2}0$
$B\stackrel{\Delta }{\to }C+\underset{excess}{N{H}_{4}OH}\to \text{Deep blue solution}$;
Identify 'B'.

1. $Pb{\left(N{O}_3\right)}_2$
2. $Bi{\left(N{O}_3\right)}_3$
3. $Cu{\left(N{O}_3\right)}_2$
4. $Ar{\left(N{O}_3\right)}_3$

Q. Assertion :Among halogens fluorine is the most oxidising agent. Reason: Fluorine is the most electronegative element.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q.

Generally its easy for me to understand chapters but i am extremely unable to understand haloalkanes and haloarenes what to do now? I have watched videos many times but its not helping this time.

Q. Given below are two statements :
Statement I : $H_2{O}_2$ can act as both oxidising and reducing agent in basic medium.
Statement II : In the hydrogen economy, the energy is transmitted in the form of dihydrogen.

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

1. Both statement I and statement II are false
2. Both statement I and statement II are true
3. Statement I is true but statement II is false
4. Statement I is false but statement II is true

Q.

A radioactive substance is oxidised. Will there be any change in the nature of its radioactivity? Give reason for your answer.

Q. Assertion :Fluorine acts as a stronger reducing agent than oxygen. Reason: Fluorine is more electronegative.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is incorrect but Reason is correct.
4. Both Assertion and Reason are incorrect.

Q. Standard reduction potentials of the half reactions are given below :
$F_2\left(g\right)+2e^{-}\to 2F^{-}\left(aq\right);E^{\circ }=+2.85V$
$C{l}_2\left(g\right)+2e^{-}\to 2C{l}^{-}\left(aq\right);E^{\circ }=+1.36V$
$B{r}_2\left(l\right)+2e^{-}\to 2B{r}^{-}\left(aq\right);E^{\circ }=+1.06V$
$I_2\left(s\right)+2e^{-}\to 2I^{-}\left(aq\right);E^{\circ }=+0.53V$
The strongest oxidising and reducing agents respectively are :

1. $F_2\text{and}{I}^{-}$
2. $C{l}_2\text{and}{I}_2$
3. $B{r}_2\text{and}C{l}^{-}$
4. $C{l}_2\text{and}B{r}^{-}$

Q. Given are cyclohexanol (I), acetic acid (II), 2, 4, 6-trinitrophenol (III) and phenol (IV). In these the order of decreasing acidic character will be:

1. III > II > IV > I
2. II > III > I > IV
3. II > III > IV > I
4. II > IV > II > I