1
The formula of brown ring complex is [Fe(H2O)5(NO)]SO4. The oxidation state of iron is ...
2
In which of the following compounds does iron have the lowest oxidation state? ...
3
The equivalent weight of NaHC2O4 in reaction with NaOH is ...
4
An oxide, X2O3 is oxidized to XO4^- by Cr2O7^2- in acid medium. The number of moles of X2O3 oxidized ...
5
H2O2 disproportionates into H2O and O2. The equivalent weight of H2O2 in this reaction is ...
6
A quantity of 1.878 g of a metal bromide when heated in a stream of hydrogen chloride gas is complet ...
7
A quantity of 0.84 g of an acid (molecular mass = 150) was dissolved in water and the volume was mad ...
8
One litre of a mixture of O2 and O3 at 0°C and 1 atm was allowed to react with an excess of acidifie ...
9
A 45 ml (specific gravity 1.02) of chlorine water is treated with an excess of KI. The liberated iod ...
10
A volume of 100 L of hard water requires 5.6 g of lime for removing temporary hardness. The temporar ...
11
A volume of 25 ml of (N/10)-Na2CO3 solution neutralizes 10 ml of a dilute H2SO4 solution. The volume ...
12
A volume of 25 ml of 0.017 M HSO3^- in strongly acidic solution required the addition of 16.9 ml of ...
13
The oxidation states of the most electronegative element in the products of the reaction, BaO2 with ...
14
The ratio of coefficients of HNO3, Fe(NO3)2, and NH4NO3 in the following redox reaction: Fe + HNO3 → ...
15
Equivalent weight of MnO4^- in acidic, basic, neutral medium is in the ratio of ...
16
A metal carbonate on heating is converted to metal oxide and is reduced to 60% of its original weigh ...
17
Calcium oxalate is insoluble in water. This property has been used to determine the amount of calciu ...
18
Magnesium hydroxide is the white milky substance in milk of magnesia. What mass of Mg(OH)2 is formed ...
19
The specific gravity of a given H2SO4 solution is 1.76. A quantity of 3.5 ml of the acid is diluted ...
20
The normality of a solution of a mixture containing HCl and H2SO4 is N/5. Twenty millilitres of this ...
21
Equivalent mass of a bivalent metal is 32.7. Molecular mass of its chloride is ...
22
When a metal carbonate is treated with excess of dilute sulphuric acid, the weight of metal sulphate ...
23
One gram of ferrous oxalate dissolved in dil. H2SO4 is treated with KMnO4 solution added in drops ti ...
24
A quantity of 20 g of H3PO4 is dissolved in water and made up to 1 L. What is the normality of the s ...
25
A quantity of 0.10 g of anhydrous organic acid requires 22.22 ml of 0.10 N – NaOH for neutralization ...
26
A quantity of 1 g of metal carbonate was dissolved in 25 ml normal HCl. The resulting liquid require ...
27
A quantity of 10 g of a sample of silver, which is contaminated with silver sulphide, gave 11.2 ml o ...
28
In the mixture of NaHCO3 and Na2CO3, volume of a given HCl required is x ml with phenolphthalein ind ...
29
In a reaction, calcium phosphate is producing calcium hydrogen phosphate. The equivalent weight of c ...
30
NH3 is oxidized to NO by O2 in basic medium. Number of equivalents of NH3 oxidized by 1 mole of O2 i ...
31
Equal volumes of 10% (w/v) H2SO4 solution and 10% (w/v) NaOH solution are mixed. The nature of resul ...
32
The volume of 0.10 M – AgNO3 should be added to 10.0 ml of 0.09 M – K2CrO4 to precipitate all the ch ...
33
What volume of gaseous NH3 at 0°C and 1 atm will be required to be passed into 30 ml of N–H2SO4 solu ...
34
A volume of 12.5 ml of 0.05 M selenium dioxide, SeO2, reacted with exactly 25.0 ml of 0.1 M – CrSO4. ...
35
A 0.2 g sample of iron wire containing 98% iron is dissolved in acid to form ferrous ion. The soluti ...
36
Calculate the temporary and permanent hardness of water sample having the following constituents per ...
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