Sulphuric Acid
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Q. 40% of pcl5 is not dissociated at 300^° c the reaction is carried out in a flask of 1ltr capacity the value of kc would b
Q. 28. concentrated sulphuric acid has a density of 1.9 g/ml and is 99 percent h2so4 by weight calculate molarity of h2so4 in this acid
Q. When a small amount of HCL is added to a buffer solution of acetic acid and sodium acetate what happen?
Q. 48. A sample of sulphuric acid is 49% by mass . 100 ml of it on titration with 12 N NaOH required 50ml of NaOH solution . The density of the sample of sulphuric acid is
Q. When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution, the ratio of volumes of hydrogen evolved is
Q. 4.9gram of H2SO4 react with how much amount of NaOH for complete reaction
Q. 36. Which of the following is most easily liquefiable? a) SO2 b) He c) NH3 d) HCl
Q. 28. What colour changes are observed when Lead is put in a sloution of Cupric chloride
Q.
Which of the following oxides is amphoteric in character?
SiO2
SnO2
CO2
CaO
Q. An aqueous solution of 0.63 g of oxalic acid dihydrate (H2C204, 2H20) is made upto 250 ml. Thevolume of 0.01 (N) NaOH solution required tocompletely neutralise 1 ml of this soltuion is(1) 40 ml(3) 10 ml(2) 4 ml(4) 20 ml
Q.
X+2H2OElectrolysis−−−−−−−→C2H4Cl2−−→Y Then X and Y are
Sodium acetate and 1, 1 - dichloro ethane
Sodium succinate and 1, 2 - dichloro propane
Sodium succinate and 1, 2 - dichloro ethane
Sodium maleate and 1, 2 - dichloro ethane
Q. 3.9g of a mixture of Al and Al2O3 is reacted with dilute HCl then 224ml H2 gas is evolved at NTP. Calculate the percentage of All in the mixture
Q. 30.Which of the following molecules dont possess permanent electric dipole moment 1. H2S 2.Xe03 3.para OH phenol 4. PCl3F2
Q. Answer of following question given that A is sulphuric acid.
In which of the following compounds, the S-atom is sp2 hybridised:
In which of the following compounds, the S-atom is sp2 hybridised:
- C
- D
- E
- None of these
Q. If 0.228g of silver salt of dibasic acid gave a residue of 0.162g of silver on ignition, then molecular weight of the acid is
Q. Which compound is prepared by the following reaction?
Xe (g)+2F2 (g)Ni vessel−−−−−−−−−→873 K, 6−7 atm
Xe (g)+2F2 (g)Ni vessel−−−−−−−−−→873 K, 6−7 atm
- XeF2
- XeF6
- XeF4
- XeOF2
Q. In acidic medium moles of KMnO_4 required to oxidise 1.5 moles of Cu_2S will be :-(1) 1.2 mol (2) 2.1 mol (3) 1.6 mol (4)2.4 mol
Q. The number of moles of H_2O_2 required to completely react with 400 ml of 0.5 N KMnO_{4_{}}in acidic medium are?
Q.
2Cr(OH)3 + 3Na2O2 → A–– + 2NaOH + 2H2O A is.
Q. An oxide which gives H2O2 on treatment with dilute acid is:
- Na2O2
- PbO2
- TiO2
- MnO2
Q. The work done in an open vessel at 300 Kelvin 56 gram iron react with dilute HCl
Q. Find the density (in gm/ml) of a 3.6M sulphuric acid solution that is 29% H2SO4 by mass ?
Q.
Which of the following is reacts with Hinsberg’s reagent to form the product which is soluble in KOH?
Primary amine
Secondary amine
Tertiary amine
Quarternary ammonium salt
Q. The unbalanced chemical reactions given in List - I show missing reagent or condition (?) which are provided in List - II. Match List - I with List - II and select the correct answer using the code given below the lists:
List−IList−II(P) PbO2+H2SO4?→(1) NOPbSO4+O2+other product (Q) Na2S2O3+H2O?→(2) I2NaHSO4+other product (R) N2H4?→(3) WarmN2+other product (S) XeF2?→Xe(4) Cl2+other product
List−IList−II(P) PbO2+H2SO4?→(1) NOPbSO4+O2+other product (Q) Na2S2O3+H2O?→(2) I2NaHSO4+other product (R) N2H4?→(3) WarmN2+other product (S) XeF2?→Xe(4) Cl2+other product
- P:4, Q:2, R:3, S:1
- P:3, Q:2, R:1, S:4
- P:1, Q:4, R:2, S:3
- P:3, Q:4, R:2, S:1
Q. In conductometric titration of AgNO3 with KCl (titrant):
- Conductivity sharply increases until the equivalence point
- After equivalence point, on addition of KCl, the conductivity increases sharply
- After equivalence point, on addition of KCl, the conductivity remains constant
- Conductivity sharply decreases until the equivalence point
Q. 12 gm of Mg reacts with dilute acid to give hydrogen gas- a.4 moles b. 1/2 moles c. 1/4 moles d. 2 moles