Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

CO + 2 H2 -----> CH3OH Describe the effect of: a) Addition of H2 b) Addition of CH3OH c) Removal of CO d) Removal of CH3OH on the equilibrium of the reaction:

Answer»

CO + 2 H2 -----> CH3OH

Describe the effect of:

a) Addition of H2
b) Addition of CH3OH
c) Removal of CO
d) Removal of CH3OH on the equilibrium of the reaction:

2.

[Fe(H2O)6]3⊕ has a magnetic moment of 5.92 BM. Thus hybridization of Fe is

Answer» [Fe(H2O)6]3 has a magnetic moment of 5.92 BM. Thus hybridization of Fe is
3.

Generally, in compounds of Fluorine, the oxidation state of Fluorine is minus _________.___

Answer» Generally, in compounds of Fluorine, the oxidation state of Fluorine is minus _________.
___
4.

Which of the following has longest C-O bond length? (Free C-O bond length in CO is 1.128 A.)

Answer»

Which of the following has longest C-O bond length? (Free C-O bond length in CO is 1.128 A.)


5.

A solution of Ni(NO3)2 is electrolysed between platinum electrodes using a current of 5 amperes for 20 min. What mass of Ni is deposited at the cathode ? (Atomic mass of Ni = 58.7)

Answer»

A solution of Ni(NO3)2 is electrolysed between platinum electrodes using a current of 5 amperes for 20 min. What mass of Ni is deposited at the cathode ? (Atomic mass of Ni = 58.7)

6.

[NiCl4] is paramagnetic while [NiCO4] is diamagnetic though both are tetrahedral. Explain.

Answer» [NiCl4] is paramagnetic while [NiCO4] is diamagnetic though both are tetrahedral. Explain.
7.

Bromine is liberated when an aqueous solution of potassium bromide is treated with

Answer»

Bromine is liberated when an aqueous solution of potassium bromide is treated with


8.

In which of the following reaction +E effect is operative?

Answer» In which of the following reaction +E effect is operative?
9.

Calculate the mass of Urea required in making 2.5 kg of 0.25 molal aqueous solution.

Answer» Calculate the mass of Urea required in making 2.5 kg of 0.25 molal aqueous solution.
10.

One mole of an ideal gas expands isothermally and reversibly at 25oC from a volume of 10 litres to a volume of 20 litres. What is the change in entropy of the gas?

Answer»

One mole of an ideal gas expands isothermally and reversibly at 25oC from a volume of 10 litres to a volume of 20 litres. What is the change in entropy of the gas?

11.

How many EDTA (ethylenediamietetra acetic aicd) molecules are required to make an octahedral complex with Ca2+ ?___

Answer»

How many EDTA (ethylenediamietetra acetic aicd) molecules are required to make an octahedral complex with Ca2+ ?___

12.

400 cm​​3 of a gas are compressed to half of its volume by applying a pressure of 0.5 atm.During the process 6.5 J of heat flows out to the surroundings. Calculate ∆E of the system.

Answer» 400 cm​​3 of a gas are compressed to half of its volume by applying a pressure of 0.5 atm.During the process 6.5 J of heat flows out to the surroundings. Calculate ∆E of the system.
13.

In solid CsCl each Cl is closely packed with how many Cs

Answer»

In solid CsCl each Cl is closely packed with how many Cs


14.

Electron occupies the available orbital singly before pairing in any one orbital occurs, it is

Answer»

Electron occupies the available orbital singly before pairing in any one orbital occurs, it is


15.

Which one of the following does not have intermolecular H-bonding ?

Answer»

Which one of the following does not have
intermolecular H-bonding ?

16.

What are the oxidation states of phosphrous in the following? H3PO3 PCl3 Ca3P2 Na3PO4 POF3

Answer»

What are the oxidation states of phosphrous in the following?

H3PO3

PCl3

Ca3P2

Na3PO4

POF3

17.

At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requries 375 mL air containing 20%O2 by volume for complete combustion. After combustion the gases occupy 330 mL. Assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure, the formula of the hydrocarbon is:

Answer»

At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requries 375 mL air containing 20%O2 by volume for complete combustion. After combustion the gases occupy 330 mL. Assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure, the formula of the hydrocarbon is:


18.

Shape of XeF4:

Answer»

Shape of XeF4:


19.

Match the corect ionisation enthalpies and electron gain enthalpies of the following elements. Elements△H1△H2△egH(i)Most reactive non metalA4193051−48(ii)Most reactive metalB16813374−328(iii)Least reactive elementC7381451−40(iv)Metal forming binary halideD.23725251+48

Answer»

Match the corect ionisation enthalpies and electron gain enthalpies of the following elements.
ElementsH1H2egH(i)Most reactive non metalA419305148(ii)Most reactive metalB16813374328(iii)Least reactive elementC738145140(iv)Metal forming binary halideD.23725251+48

20.

According to the law of conservation of mass The Mass present in the earth cannot be created nor destroyed if it is true means then if after we death our body is d i g in soil then if my weight is 70 kilogram then the 70 kilogram of nutrients supplied to the soil please answer me.....

Answer» According to the law of conservation of mass The Mass present in the earth cannot be created nor destroyed
if it is true means then if after we death our body is d i g in soil then

if my weight is 70 kilogram then the 70 kilogram of nutrients supplied to the soil please answer me.....
21.

Catalytic hydrogenation of compound 'X' (C10H14) gives butyl cyclohexane. Treatment of ‘X’ with Cu(NH3)+2 gives no precipitate but does after treatment with hot NaNH2. When ‘X’ is first reacted with H2Ni2B and then oxidatively ozonized, a non resolvable compound is formed. The organic compound 'X' is -

Answer»

Catalytic hydrogenation of compound 'X' (C10H14) gives butyl cyclohexane. Treatment of ‘X’ with Cu(NH3)+2 gives no precipitate but does after treatment with hot NaNH2. When ‘X’ is first reacted with H2Ni2B and then oxidatively ozonized, a non resolvable compound is formed. The organic compound 'X' is -

22.

Chemical formulae of chloric acid is:

Answer»

Chemical formulae of chloric acid is:


23.

At a constant temperature a gas is initially at 2 atm pressure. To compress it to (18)th of its initial volume, pressure to be applied is

Answer»

At a constant temperature a gas is initially at 2 atm pressure. To compress it to (18)th of its initial volume, pressure to be applied is

24.

Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides : (CH3)2CHCH(Cl)CH3 CH3CH2CH(CH3)CH(C2H5)Cl CH3CH2C(CH3)2CH2I (CH3)3CCH2CH)(Br)C6H5 CH3CH(CH3)CH(Br)CH3 CH3C(C2H5)2CH2Br CH3C(Cl)(C2H5)CH2CH3 CH3CH=C(Cl)CH2CH(CH3)2 CH3CH=CHC(Br)(CH3)2 p−ClC6H4CH2CH(CH3)2 m−ClCH2C6H4CH2C(CH3)3 o−Br−C6H4CH(CH3)CH2CH3

Answer»

Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides :

(CH3)2CHCH(Cl)CH3

CH3CH2CH(CH3)CH(C2H5)Cl

CH3CH2C(CH3)2CH2I

(CH3)3CCH2CH)(Br)C6H5

CH3CH(CH3)CH(Br)CH3

CH3C(C2H5)2CH2Br

CH3C(Cl)(C2H5)CH2CH3

CH3CH=C(Cl)CH2CH(CH3)2

CH3CH=CHC(Br)(CH3)2

pClC6H4CH2CH(CH3)2

mClCH2C6H4CH2C(CH3)3

oBrC6H4CH(CH3)CH2CH3

25.

Which of the following does not obey Aufbau principle and pauli's principle

Answer»

Which of the following does not obey Aufbau principle and pauli's principle


26.

distinguish using different chemical test ? 1. ethanal and propanal 2. methanamine and aniline

Answer» distinguish using different chemical test ?
1. ethanal and propanal
2. methanamine and aniline
27.

At a pressure of 100 torr and 400 torr, separately, 0.1 gram and 0.2 gram of a gas is observed adsorbed on one gram of activated charcoal. Assuming that data obeys Freundlich isotherm, the value of n is reported as

Answer»

At a pressure of 100 torr and 400 torr, separately, 0.1 gram and 0.2 gram of a gas is observed adsorbed on one gram of activated charcoal. Assuming that data obeys Freundlich isotherm, the value of n is reported as


28.

The conversion of primary aromatic amines into diazonium salts is known as:

Answer»

The conversion of primary aromatic amines into diazonium salts is known as:


29.

What is Ozone hole?

Answer»

What is Ozone hole?


30.

Bleaching powder is obtained by the action of Cl2 on

Answer» Bleaching powder is obtained by the action of Cl2 on
31.

Which of the following is colourless?

Answer» Which of the following is colourless?
32.

EAN of Cr in [Cr(NH3)6]Cl3 is

Answer»

EAN of Cr in [Cr(NH3)6]Cl3 is


33.

In the following reaction, the major products E and F respectively are:

Answer»

In the following reaction, the major products E and F respectively are:

34.

Question 07 Which of the following species has tetrahedral geometry? (a) BH−4 (b) NH−2 (c)CO2−3 (d)H3O+

Answer»

Question 07

Which of the following species has tetrahedral geometry?

(a) BH4

(b) NH2

(c)CO23

(d)H3O+

35.

Correct IUPAC name of the compound is

Answer»

Correct IUPAC name of the compound is


36.

(i) Name the method used for the refining of zirconium. (ii) What is the role of CO in the extraction of Iron? (iii) Reduction of metal oxide to metal becomes easier if the metal obtained is in liquid state. Why?

Answer»

(i) Name the method used for the refining of zirconium.

(ii) What is the role of CO in the extraction of Iron?

(iii) Reduction of metal oxide to metal becomes easier if the metal obtained is in liquid state. Why?

37.

Which of the following orders regarding the boiling points of the given alkyl chloride is correct?

Answer»

Which of the following orders regarding the boiling points of the given alkyl chloride is correct?


38.

Major product of the given reaction is:

Answer»
Major product of the given reaction is:
39.

Considering the Ellingham diagram, which of the following metals can be used to reduce alumina?

Answer»

Considering the Ellingham diagram, which of the following metals can be used to reduce alumina?

40.

A piece of magnesium ribbon is heated to redness in an atmosphere of nitrogen and cooled, on adding water the gas evolved is

Answer»

A piece of magnesium ribbon is heated to redness in an atmosphere of nitrogen and cooled, on adding water the gas evolved is


41.

The amount of energy released when a million atoms of iodine are completely converted into I– ions in the vapour state according to the equation, I(g)+e–→I–(g) is 5.0×10–13 J. Calculate the electron gain enthalpy of iodine in terms of kJ mol–1.

Answer»

The amount of energy released when a million atoms of iodine are completely converted into I ions in the vapour state according to the equation, I(g)+eI(g) is 5.0×1013 J.
Calculate the electron gain enthalpy of iodine in terms of kJ mol1.

42.

The value of Kp for the reaction 2H2O(g)+2Cl2(g)⇌4HCl(g)+O2(g) is 0.03 atm at 427∘C, when the partial pressure are expressed in atmosphere, then the value of Kc for the same reaction is

Answer»

The value of Kp for the reaction
2H2O(g)+2Cl2(g)4HCl(g)+O2(g) is 0.03 atm at 427C, when the partial pressure are expressed in atmosphere, then the value of Kc for the same reaction is

43.

The aqeous solution of the following salt will have the lowest pH:

Answer»

The aqeous solution of the following salt will have the lowest pH:


44.

If 1.2g of metal displace 1.12 lit hydrogen at normal temperature & pressure, equivalent weight of metal would be

Answer»

If 1.2g of metal displace 1.12 lit hydrogen at normal temperature & pressure, equivalent weight of metal would be

45.

The monomer of dacron is/are:

Answer»

The monomer of dacron is/are:


46.

How much AgBr could dissolve in 1.0L of 0.4M NH3 ? Assume that [Ag(NH3)2]+ is the only complex formed given , Kf[Ag(NH3)2]+=1.0×108,Ksp(AgBr)=5.0×10−13

Answer»

How much AgBr could dissolve in 1.0L of 0.4M NH3 ? Assume that [Ag(NH3)2]+ is the only complex formed given , Kf[Ag(NH3)2]+=1.0×108,Ksp(AgBr)=5.0×1013

47.

Which of the following is Teflon [RPMT 2002]

Answer»

Which of the following is Teflon

[RPMT 2002]


48.

Three gases A, B and C are at same temperature if their rms speed are in the ratio 1:1√2:1√3 then their molar masses will be in the ratio:

Answer»

Three gases A, B and C are at same temperature if their rms speed are in the ratio 1:12:13 then their molar masses will be in the ratio:

49.

The reagent for the above conversion is

Answer»

The reagent for the above conversion is


50.

‘n’ moles of an ideal gas undergoes a process A→B as shown in the figure. The maximum temperature of the gas during the process will be:

Answer»

‘n’ moles of an ideal gas undergoes a process AB as shown in the figure. The maximum temperature of the gas during the process will be: