Iron II Chloride

Q.

Anhydrous ferric chloride is prepared by:

1. Heating hydrated ferric chloride at a high temperature in a stream of air.

2. Heating metallic iron in a stream of dry chlorine gas.

3. Reaction of ferric oxide with hydrochloric acid.

4. Reaction of metallic iron with hydrochloric acid.

Q. The complex which reacts most readily with sodium is Options: Ni(CO)4 Fe(CO)5 Cr(CO)6 Should have chosen V(CO)6

Q. What is the correct relationship between the $pH$ of isomer solutions of sodium oxide, $N{a}_{2}O\left(p{H}_1\right),\text{sodium sulphide,}N{a}_{2}S\left(p{H}_2\right)$ $\text{sodium selenide,}N{a}_{2}Se\left(p{H}_3\right)$ $\text{and sodium telluride}N{a}_{2}Te\left(p{H}_4\right)?$

1. $p{H}_1>p{H}_2>p{H}_3>p{H}_4$
2. $p{H}_1>p{H}_2=p{H}_3>p{H}_4$
3. $p{H}_1<p{H}_2<p{H}_3<p{H}_4$
4. $p{H}_1<p{H}_2<p{H}_3=p{H}_4$

Q. When potassium ferrocyanide crystals are heated with concentrated sulphuric acid, the gas evolved is

Q. Match the List-I (solution of salts) with List-II (pH of the solution) and select the correct answer using the codes given below the lists:

1. A-2 B-3 C-4 D-1
2. A- 3 B-2 C-1 D- 4
3. A- 4 B-3 C-2 D-1
4. A- 1 B-2 C-3 D-4

Q.

The pH of aqueous ammonium chloride is:

1. Equal To $7$

2. Less than $7$

3. Greater than $7$

4. Greater than or equal to $7$

Q. Among $PbS,CuS,HgS,MnS,A{g}_{2}S,NiS,CoS,B{i}_2{S}_3$ and $Sn{S}_2$, the total number of black coloured sulphides is

Q. Which of the carbonium ion is formed in the following reaction?

1. 
2. 
3. 
4. All the three

Q. Xenon fluorides are colourless crystalline solids and are readily hydrolysed even by traces of water. From the following given products, select the one which is not common to the hydrolysis of $Xe{F}_2\text{and}Xe{F}_4$.

1. HF
2. $Xe{O}_3$
3. $O_2$
4. $Xe$

Q. Stability of a crystal is reflected in the magnitude of its melting points. Comment. Collect melting points of solid water, ethyl alcohol, diethyl ether and methane from a data book. What can you say about the intermolecular forces between these molecules?

Q. The structure of $F{e}_{2}C{l}_6$ is best represented as

1. $\left[FeC{l}_2{]}^{+}\right[FeC{l}_4{]}^{-}$
2. 
3. 
4. 

Q. Example of photochemical reaction is:

1. decomposition of water
2. formation of slaked lime
3. mixing of acids and alkalis
4. photosynthesis of HCl

Q. An aqueous solution of which of the following compounds will have a $pH$ < 7?

1. $TiC{l}_4$
2. $FeC{l}_3$
3. All of these
4. $CuS{O}_4$

Q. Which of the following salt solution has the lowest $pH$?

1. $K_2{C}_2{O}_4$
2. ${\left(N{H}_4\right)}_{2}S{O}_4$
3. $K_{2}S{O}_4$
4. $NaN{O}_3$

Q.

Nitric oxide reacts with Br₂ and gives nitrosyl bromide as per reaction given below:

When 0.087 mol of NO and 0.0437 mol of Br₂ are mixed in a closed container at constant temperature, 0.0518 mol of NOBr is obtained at equilibrium. Calculate equilibrium amount of NO and Br₂.

Q. Which of the following is soluble in boiling water, but sparingly soluble in cold water?

1. $Pb{I}_2$
2. $PbB{r}_2$
3. $PbC{l}_2$
4. All of these

Q. Indicate the steps in the preparation of:
(i) $K_{2}C{r}_2{O}_7$ from chromite ore. (ii) $KMn{O}_4$ from pyrolusite ore.

Q. Which of the following halides are not soluble in water?

1. $PbC{l}_2$
2. $AgBr$
3. $AgCl$
4. $AgF$

Q. Which of the following dissolves in ionic solvents?

1. $C{H}_{3}OH$
2. $CC{l}_4$
3. $C_6{H}_6$
4. $C_5{H}_{12}$

Q. Fill the given table with the appropriate compounds which will complete the following reactions.

1. $1\to M{g}_{2}S{O}_4,2\to HCl,3\to Zn,4\to AlC{l}_2$
   
2. $1\to MgS{O}_4,2\to HCl,3\to Zn,4\to AlCl$
3. $1\to M{g}_{2}S{O}_4,2\to HCl,3\to Zn,4\to AlC{l}_3$
   
4. $1\to MgS{O}_4,2\to HCl,3\to Zn,4\to AlC{l}_3$

Q.

Anhydrous ferric chloride is prepared by:

1. Heating hydrated ferric chloride at a high temperature in a stream of air.

2. Heating metallic iron in a stream of dry chlorine gas.

3. Reaction of ferric oxide with hydrochloric acid.

4. Reaction of metallic iron with hydrochloric acid.

Q.

$B{e}_{2}C+H_{2}O\to BeO+x$

$Ca{C}_2+H_{2}O\to Ca(OH{)}_2+y$

$M{g}_2{C}_3+H_{2}O\to Mg(OH{)}_2+z$.

$x,y$ & $z$ are respectively

1. CH₄, C₂H₂, C₃H₄

2. CH₄, C₂H₂, C₃H₈

3. CH₄, C₂H₆, C₃H₈

4. C₂H₂, C₂H₆, C₃H₄

Q.

Galvanized iron sheets lose their lustre due to the formation of:

1. Basic zinc sulphate

2. Zinc sulphate heptahydrate

3. double salt of zinc hydroxide and ferric hydroxide

4. Basic zinc carbonate

Q. A white metal sulphide soluble in water is :

1. $CuS$
2. $N{a}_{2}S$
3. $ZnS$
4. $PbS$

Q. which is maximum soluble in water among SILVER HALIDES?? AgI, AgBr, AgCl, AgF ? WHY?

Q. Anhydrous ferric chloride is prepared by (IIT JEE, 2002)

1. Heating hydrated ferric chloride at a high temperature in a stream of air
2. Heating metallic iron in a stream of dry chlorine gas
3. Reaction of ferric oxide with HCl
4. Reaction of metallic iron with HCl

Q. How many equivalents are there per mol of $H_{2}S$, in its oxidation to $S{O}_2$?

Q. Assertion: $p{K}_a$ of a weak acid becomes equal to the pH of the solution at the mid-point of titration.

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. Assertion is incorrect but Reason is correct
5. Both Assertion and Reason are incorrect

Q. How is sodium chloride different from its constituent elements, sodium and chlorine in its properties? Justify

Q. Assertion :All sulfates are soluble except those of strontium, barium, and lead(II), which are insoluble, and those of calcium and silver which are moderately soluble. Reason: Salts having high energy of hydration are always soluble in water.

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