Redox Reactions

Q.

What are some examples of oxidation reactions?

Q. If 0.5 moles of $BaC{l}_2$ is mixed with 0.1 moles of $N{a}_{3}P{O}_4,$ the maximum amount of $B{a}_3(P{O}_4{)}_2$ that can be formed is

1. $0.7mol$
2. $0.5mol$
3. $0.2mol$
4. $0.05mol$

Q. Consider a reaction :

$F{e}_2{O}_3\left(s\right)+2Al\left(s\right)\to A{l}_2{O}_3\left(s\right)+2Fe\left(s\right)$

Choose the correct options :

1. 
   $F{e}_2{O}_3$ is a reducing agent.
2. $Al$ is a reducing agent.
3. $F{e}_2{O}_3$ is an oxidising agent.
4. $Al$ is an oxidising agent.

Q. Oxidation state of nitrogen in nitrogen peroxide

Q. if anion of ammonium ion salt is more oxidising then heating of this salt produce NH3 N2 NO2 NONE OF THE ABOVE

Q. For the oxidation of As2S3 into AsO4-3 and S by HNO3 the equivalent weight of As2S3 will be

Q. 42. What is the hybridisation of nitrogen in NH4NO3 ?

Q. Fluorine reacts with ice and results as follows:
$H_{2}O\left(s\right)+F_2\left(g\right)\to HF\left(g\right)+HOF\left(s\right)$
Justify that this reaction is a redox reaction.

Q.

Which of the following after burning at room temperature gives gaseous oxide

1. H

2. Na

3. S

4. He

Q. Assign oxidation number to the underlined element in $Na\underset{–}{B}{H}_4$

Q. When happens when:

A Magnesium is burnt in air

B Quick lime is heated with silica

C Chlorine reacts with slaked lime

D Calcium nitrate is heated

Q. Which of the following acts as both oxidising agent as well as reducing agent?

1. $LiAl{H}_4$
2. $N{a}_2{S}_2{O}_3$
3. None of these
4. $H_2{O}_2$

Q. 1 Fe2+ is oxidised to Fe3+ by using 1. H2O2 in the presence of NaOH 2.LiAlH4 3.H2O2 in the presence of H2SO4 4.only 1 and 3

Q. 10g of Zn reacts with 2g of hcl according to the equation.zn+hcl=Zncl2+h2.Identify the limiting rwagent.Find the amt of product forme

Q. 5.What is the oxidation number of s2f2

Q. Whenever a reaction between an oxidising agent and a reducing agent is carried out, a compound of lower oxidation state is formed if the reducing agent is in excess and a compound of higher oxidation state is formed if the oxidising agent is in excess. Justify this statement giving three illustrations.

Q. The redox reaction among the following is:

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Q. What is difference between oxidation number method and ion electron method ?which should we use.any trick

Q.

In the following reaction

3Br₂ + 6CO₃^2- + 3H₂O → 5Br ^- + BrO₃^- + 6HCO₃^-

1. Bromine is reduced, carbonate is oxidized

2. Bromine is neither reduced nor oxidized

3. Bromine is reduced as well as oxidized

4. Bromine is oxidized, carbonate is reduced

Q. Assign oxidation number to the underlined element in $H_4{\underset{–}{P}}_2{O}_7$

Q. Interhalogens are more reactive than halogens why

Q.

Oxidation involves :

1. Addition of oxygen

2. Removal of Hydrogen

3. Removal of Hydrogen electrons

4. Addition of any electronegative element

Q. how to calculate the equivalent weight of cuso4 when it is convereted to cu2i2

Q. Which of the following acts as both oxidising agent as well as reducing agent?

1. $LiAl{H}_4$
2. $H_2{O}_2$
3. $N{a}_2{S}_2{O}_3$
4. None of these

Q. Assign oxidation number to the underlined element in $H_2{\underset{–}{S}}_2{O}_7$

Q. The Xenon Fluorides are very effective and clean Fluorinating agents. They also behave as good reducing agents – True or False?

1. True
2. False

Q. 96.What is the hybridisation of carbon suboxide?

Q. why we take X=0 in the formula H=1/2(V+X-C+A) while prediction of hybridisation of NO3-

Q. oxidation number of oxygen in H2O2

Q. 12. A solution of 10 ml M/10 ferrous sulphate was titrated with potassium permanganate solution in acidic medium the amount of potassium permanganate used will be