10223 + Interview Questions in Chemistry Page 47 InterviewSolution

2301.	100 At what temp ,the rate of effusion of nitrogen would be 1.625 times than rate of SO2 at 500C temp
Answer» 100 At what temp ,the rate of effusion of nitrogen would be 1.625 times than rate of SO2 at 500C temp

Discussion

2302.	Water is a universal solvent. Give Reason.
Answer» Water is a universal solvent. Give Reason.

Discussion

2303.	A diver is able to cut through water in a swimming pool. Which property of water does this observation show?
Answer» A diver is able to cut through water in a swimming pool. Which property of water does this observation show?

Discussion

2304.	2. Why is ZnS coated only behind the anode and not behind the cathode in discharge tube experiment carried out by J.J. Thompson?
Answer» 2. Why is ZnS coated only behind the anode and not behind the cathode in discharge tube experiment carried out by J.J. Thompson?

Discussion

2305.	explain where tetrahedral and octahedral voids present in different sturcturesa(AB-Nacl,zns)&(A2B-Caf2)
Answer» explain where tetrahedral and octahedral voids present in different sturcturesa(AB-Nacl,zns)&(A2B-Caf2)

Discussion

2306.	Standard entropies of A2, B2 and AB are 80, 60 and 90 JK−1 mol−1 respectively. If for the reaction 2 AB → A2 + B2, ΔH° = −50 kJ, then ΔG° of reaction at 25°C will be
Answer» Standard entropies of A2, B2 and AB are 80, 60 and 90 JK−1 mol−1 respectively. If for the reaction 2 AB → A2 + B2, ΔH° = −50 kJ, then ΔG° of reaction at 25°C will be

Discussion

2307.	why does a valence shell contain only 8 electrons?
Answer» why does a valence shell contain only 8 electrons?

Discussion

2308.	What is the charge of Mg in MgCl2 ?
Answer» What is the charge of Mg in $M g {C l}_{2}$ ?

Discussion

2309.	If the cold junction of a thermo-couple is kept at 0^0C and the hot junction is kept at T^0C then the relation between neutral temperature (Tn) and temperature of inversion (Ti ) is (1) Tn = Ti + T (2) Tn = Ti + T/2 (3) Tn = 2Ti (4) Tn = Ti T
Answer» If the cold junction of a thermo-couple is kept at 0^0C and the hot junction is kept at T^0C then the relation between neutral temperature (Tn) and temperature of inversion (Ti ) is (1) Tn = Ti + T (2) Tn = Ti + T/2 (3) Tn = 2Ti (4) Tn = Ti T

Discussion

2310.	If 10 ml of H2 needs 20 mins to diffuse. Calculate the volume of O2 diffused in 40 mins under identical condition.
Answer» If 10 ml of H2 needs 20 mins to diffuse. Calculate the volume of O2 diffused in 40 mins under identical condition.

Discussion

2311.	In a reaction, 5.3 g of sodium carbonate reacted with 6 g of acetic acid. The products were 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium acetate. Show that these observations are in agreement with the law of conservation of mass.Sodium Carbonate + Acetic Acid →Sodium Acetate + Carbon Dioxide + Water
Answer» In a reaction, 5.3 g of sodium carbonate reacted with 6 g of acetic acid. The products were 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium acetate. Show that these observations are in agreement with the law of conservation of mass. Sodium Carbonate + Acetic Acid $\to$ Sodium Acetate + Carbon Dioxide + Water

Discussion

2312.	Which of the following element is alloyed with magnesium metal for various commercial purposes?
Answer» Which of the following element is alloyed with magnesium metal for various commercial purposes?

Discussion

2313.	Which of the following is not a member of 3d transition series?
Answer» Which of the following is not a member of 3d transition series?

Discussion

2314.	A solution is prepared by adding 60 g of urea to 180 g of water. The mole frraction of urea and water are ______ and ______ respectively.
Answer» A solution is prepared by adding 60 g of urea to 180 g of water. The mole frraction of urea and water are ______ and ______ respectively.

Discussion

2315.	if mass of 1 atom is 3.32×10∧23gm then calculate number of nucleons present in 2 atoms of the element
Answer» if mass of 1 atom is 3.32×10∧23gm then calculate number of nucleons present in 2 atoms of the element

Discussion

2316.	Calculate the relative molecular masses of : (a) CHCl3 (b) (NH4)2Cr2O7 (c) CuSO4.5H2O (d) (NH4)2SO4 (e) CH3COONa (f) Potassium chlorate (g) Ammonium chloroplatinate (NH4)2PtCl6
Answer» Calculate the relative molecular masses of : (a) $C H C l_{3}$ (b) $(N H_{4})_{2} C r_{2} O_{7}$ (c) $C u S O_{4} .5 H_{2} O$ (d) $(N H_{4})_{2} S O_{4}$ (e) $C H_{3} C O O N a$ (f) Potassium chlorate (g) Ammonium chloroplatinate $(N H_{4})_{2} P t C l_{6}$

2316.

Calculate the relative molecular masses of : (a) CHCl3 (b) (NH4)2Cr2O7 (c) CuSO4.5H2O (d) (NH4)2SO4 (e) CH3COONa (f) Potassium chlorate (g) Ammonium chloroplatinate (NH4)2PtCl6

Answer»

Calculate the relative molecular masses of :

(a) $C H C l_{3}$ (b) $(N H_{4})_{2} C r_{2} O_{7}$

(c) $C u S O_{4} .5 H_{2} O$ (d) $(N H_{4})_{2} S O_{4}$

(e) $C H_{3} C O O N a$ (f) Potassium chlorate

(g) Ammonium chloroplatinate $(N H_{4})_{2} P t C l_{6}$

Discussion

2317.	The number of electrons in one molecule of CO2 are
Answer» The number of electrons in one molecule of $C O_{2}$ are

2317.

The number of electrons in one molecule of CO2 are

Answer»

The number of electrons in one molecule of $C O_{2}$ are

Discussion

2318.	Which of the following has magnetic moment of 1.73 B.M. (approx.)?
Answer» Which of the following has magnetic moment of 1.73 B.M. (approx.)?

Discussion

2319.	4. Why KH is inversely proportional to solubility
Answer» 4. Why KH is inversely proportional to solubility

Discussion

2320.	When NaCl is mixed with water and carbon-dioxide and ammonia, two products X and Y are produced. On heating X, sodium carbonate is obtained as product. And when sodium carbonate reacts with sufficient water, product Z is formed. What is X, Y and Z?
Answer» When NaCl is mixed with water and carbon-dioxide and ammonia, two products X and Y are produced. On heating X, sodium carbonate is obtained as product. And when sodium carbonate reacts with sufficient water, product Z is formed. What is X, Y and Z?

2320.

When NaCl is mixed with water and carbon-dioxide and ammonia, two products X and Y are produced. On heating X, sodium carbonate is obtained as product. And when sodium carbonate reacts with sufficient water, product Z is formed. What is X, Y and Z?

Answer»

When NaCl is mixed with water and carbon-dioxide and ammonia, two products X and Y are produced. On heating X, sodium carbonate is obtained as product. And when sodium carbonate reacts with sufficient water, product Z is formed.

What is X, Y and Z?

Discussion

2321.	what is the valency of carbondioxide .??
Answer» what is the valency of carbondioxide .??

Discussion

2322.	Equal masses of methane and oxygen are mixed in an empty container at 25∘C. The fraction of the total pressure exerted by oxygen is
Answer» Equal masses of methane and oxygen are mixed in an empty container at $25^{\circ} C$ . The fraction of the total pressure exerted by oxygen is

Discussion

2323.	Question 8Why do acids not show acidic behaviour in the absence of water?
Answer» Question 8 Why do acids not show acidic behaviour in the absence of water?

Discussion

2324.	Explain why an antacid tablet is taken when you suffer from acidity.
Answer» Explain why an antacid tablet is taken when you suffer from acidity.

Discussion

2325.	The swimmer is able to cut through water in a swimming pool. Why? [3 MARKS]
Answer» The swimmer is able to cut through water in a swimming pool. Why? [3 MARKS]

Discussion

2326.	Which one of the following pair of compounds illustrates law of multiple proportions?
Answer» Which one of the following pair of compounds illustrates law of multiple proportions?

Discussion

2327.	Although NaCl contains two subs†an ce,it is a pure subs†an ce. Explai
Answer» Although NaCl contains two subs†an ce,it is a pure subs†an ce. Explai

Discussion

2328.	what is dispersion method?
Answer» what is dispersion method?

Discussion

2329.	The change of state from solid to liquid known as :
Answer» The change of state from solid to liquid known as :

Discussion

2330.	In basic medium, CrO2−4 oxidises S2O2−3 to form Cr(OH)−4 and SO2−4. How many mL(nearest integer) of 0.154 M CrO2−4 are required to react with 40.0 mL of 0.246 M S2O2−3?[Hint:0.0154 M=0.154×3 N CrO2−4 and 0.246 M=0.246×8 N S2O2−3]
Answer» In basic medium, $C r O_{4}^{2 -}$ oxidises $S_{2} O_{3}^{2 -}$ to form $C r (O H)_{4}^{-}$ and $S O_{4}^{2 -}$ . How many mL(nearest integer) of $0.154 M$ $C r O_{4}^{2 -}$ are required to react with $40.0 mL$ of $0.246 M$ $S_{2} O_{3}^{2 -}$ ? $[Hint : 0.0154 M = 0.154 \times 3 N C r O_{4}^{2 -} and 0.246 M = 0.246 \times 8 N S_{2} O_{3}^{2 -}]$

Discussion

2331.	The reason why balloons are filled with helium instead of hydrogen is:-
Answer» The reason why balloons are filled with helium instead of hydrogen is:-

Discussion

2332.	The concentration of the salt solution is 20%. The mass of water in the solution is 440g.Determine the mass of the salt present in the solution.
Answer» The concentration of the salt solution is 20%. The mass of water in the solution is 440g. Determine the mass of the salt present in the solution.

Discussion

2333.	At a certain temperature, the saturated solution of silver chloride has electrolytic conductivity of 1.12. The ionic conductances of Ag+ and Cl- ions at infinite dilution are 54.3 and 65.5 respectively at same temperature. Find solubility of Agcl at this temperature.
Answer» At a certain temperature, the saturated solution of silver chloride has electrolytic conductivity of 1.12. The ionic conductances of Ag+ and Cl- ions at infinite dilution are 54.3 and 65.5 respectively at same temperature. Find solubility of Agcl at this temperature.

Discussion

2334.	A solution contains x ml of ethyl alcohol mixed with 100 ml of water. The concentration of the solution is 28.6% in terms of volume by volume percentage. Find x.
Answer» A solution contains $x$ ml of ethyl alcohol mixed with 100 ml of water. The concentration of the solution is 28.6% in terms of volume by volume percentage. Find $x$ .

Discussion

2335.	which chemical is used in the production of plastic bag?
Answer» which chemical is used in the production of plastic bag?

Discussion

2336.	Which of the following statement is incorrect ? (a) the particles of matter are very, very small (b) the particles of matter attract one another (c) the particles of some of the matter are moving constantly (d) the particles of all the matter have spaes between them
Answer» Which of the following statement is incorrect ? (a) the particles of matter are very, very small (b) the particles of matter attract one another (c) the particles of some of the matter are moving constantly (d) the particles of all the matter have spaes between them

2336.

Which of the following statement is incorrect ? (a) the particles of matter are very, very small (b) the particles of matter attract one another (c) the particles of some of the matter are moving constantly (d) the particles of all the matter have spaes between them

Answer»

Which of the following statement is incorrect ?

(a) the particles of matter are very, very small

(b) the particles of matter attract one another

(c) the particles of some of the matter are moving constantly

(d) the particles of all the matter have spaes between them

Discussion

2337.	How many types of acids are there?
Answer» How many types of acids are there?

Discussion

2338.	23.In which of the following solution AgCl has minimum solubility 1)0.05 M AgNO3 2)0.01 M CaCl2 3)0.01 M NaCl 4)0.01 M NH4OH
Answer» 23.In which of the following solution AgCl has minimum solubility 1)0.05 M AgNO3 2)0.01 M CaCl2 3)0.01 M NaCl 4)0.01 M NH4OH

Discussion

2339.	Which of the following substances give H+ ions in aqueous solution?
Answer» Which of the following substances give $H^{+}$ ions in aqueous solution?

Discussion

2340.	What is the difference between displacement and double displacement reactions? Write relevant equations for the above.
Answer» What is the difference between displacement and double displacement reactions? Write relevant equations for the above.

Discussion

2341.	What is the slope of logP Vs logV graph at constant temperature?
Answer» What is the slope of logP Vs logV graph at constant temperature?

Discussion

2342.	Atoms having same atomic mass and different atomic numbers are known as __.
Answer» Atoms having same atomic mass and different atomic numbers are known as __.

Discussion

2343.	What is the oxidation state and covalency of Al in [AlCl(H2O)5]2+
Answer» What is the oxidation state and covalency of Al in [AlCl(H2O)5]2+

Discussion

2344.	Can you please tell me in brief about all concept of matter in our surroundings
Answer» Can you please tell me in brief about all concept of matter in our surroundings

Discussion

2345.	State what is observed when excess of ammonia is passed through an aqueous solution of lead nitrate.
Answer» State what is observed when excess of ammonia is passed through an aqueous solution of lead nitrate.

Discussion

2346.	Cryolite is
Answer» Cryolite is

Discussion

2347.	Let the mass of electron is 2 times mass of proton is 1/4 and mass of neutron so 3/2 of original mass Then the atomic wt of c atomic not and mass no 12
Answer» Let the mass of electron is 2 times mass of proton is 1/4 and mass of neutron so 3/2 of original mass Then the atomic wt of c atomic not and mass no 12

Discussion

2348.	1. Which d block element has highest heat of atomisation?
Answer» 1. Which d block element has highest heat of atomisation?

Discussion

2349.	Choose a non-metallic oxide from the following:
Answer» Choose a non-metallic oxide from the following:

Discussion

2350.	What is Debereiner’s law of triads? Explain with the help of one example of a Dobereiner’s triad.
Answer» What is Debereiner’s law of triads? Explain with the help of one example of a Dobereiner’s triad.

Discussion

Explore topic-wise InterviewSolutions in .

100 At what temp ,the rate of effusion of nitrogen would be 1.625 times than rate of SO2 at 500C temp

Water is a universal solvent. Give Reason.

A diver is able to cut through water in a swimming pool. Which property of water does this observation show?

2. Why is ZnS coated only behind the anode and not behind the cathode in discharge tube experiment carried out by J.J. Thompson?

explain where tetrahedral and octahedral voids present in different sturcturesa(AB-Nacl,zns)&(A2B-Caf2)

Standard entropies of A2, B2 and AB are 80, 60 and 90 JK−1 mol−1 respectively. If for the reaction 2 AB → A2 + B2, ΔH° = −50 kJ, then ΔG° of reaction at 25°C will be

why does a valence shell contain only 8 electrons?

What is the charge of Mg in MgCl2 ?

If the cold junction of a thermo-couple is kept at 0^0C and the hot junction is kept at T^0C then the relation between neutral temperature (Tn) and temperature of inversion (Ti ) is (1) Tn = Ti + T (2) Tn = Ti + T/2 (3) Tn = 2Ti (4) Tn = Ti T

If 10 ml of H2 needs 20 mins to diffuse. Calculate the volume of O2 diffused in 40 mins under identical condition.

Which of the following element is alloyed with magnesium metal for various commercial purposes?

Which of the following is not a member of 3d transition series?

A solution is prepared by adding 60 g of urea to 180 g of water. The mole frraction of urea and water are ______ and ______ respectively.

if mass of 1 atom is 3.32×10∧23gm then calculate number of nucleons present in 2 atoms of the element

Calculate the relative molecular masses of : (a) CHCl3 (b) (NH4)2Cr2O7 (c) CuSO4.5H2O (d) (NH4)2SO4 (e) CH3COONa (f) Potassium chlorate (g) Ammonium chloroplatinate (NH4)2PtCl6

The number of electrons in one molecule of CO2 are

Which of the following has magnetic moment of 1.73 B.M. (approx.)?

4. Why KH is inversely proportional to solubility

When NaCl is mixed with water and carbon-dioxide and ammonia, two products X and Y are produced. On heating X, sodium carbonate is obtained as product. And when sodium carbonate reacts with sufficient water, product Z is formed. What is X, Y and Z?

what is the valency of carbondioxide .??

Equal masses of methane and oxygen are mixed in an empty container at 25∘C. The fraction of the total pressure exerted by oxygen is

Question 8Why do acids not show acidic behaviour in the absence of water?

Explain why an antacid tablet is taken when you suffer from acidity.

The swimmer is able to cut through water in a swimming pool. Why? [3 MARKS]

Which one of the following pair of compounds illustrates law of multiple proportions?

Although NaCl contains two subs†an ce,it is a pure subs†an ce. Explai

what is dispersion method?

The change of state from solid to liquid known as :

In basic medium, CrO2−4 oxidises S2O2−3 to form Cr(OH)−4 and SO2−4. How many mL(nearest integer) of 0.154 M CrO2−4 are required to react with 40.0 mL of 0.246 M S2O2−3?[Hint:0.0154 M=0.154×3 N CrO2−4 and 0.246 M=0.246×8 N S2O2−3]

The reason why balloons are filled with helium instead of hydrogen is:-

The concentration of the salt solution is 20%. The mass of water in the solution is 440g.Determine the mass of the salt present in the solution.

At a certain temperature, the saturated solution of silver chloride has electrolytic conductivity of 1.12. The ionic conductances of Ag+ and Cl- ions at infinite dilution are 54.3 and 65.5 respectively at same temperature. Find solubility of Agcl at this temperature.

A solution contains x ml of ethyl alcohol mixed with 100 ml of water. The concentration of the solution is 28.6% in terms of volume by volume percentage. Find x.

which chemical is used in the production of plastic bag?

Which of the following statement is incorrect ? (a) the particles of matter are very, very small (b) the particles of matter attract one another (c) the particles of some of the matter are moving constantly (d) the particles of all the matter have spaes between them

How many types of acids are there?

23.In which of the following solution AgCl has minimum solubility 1)0.05 M AgNO3 2)0.01 M CaCl2 3)0.01 M NaCl 4)0.01 M NH4OH

Which of the following substances give H+ ions in aqueous solution?

What is the difference between displacement and double displacement reactions? Write relevant equations for the above.

What is the slope of logP Vs logV graph at constant temperature?

Atoms having same atomic mass and different atomic numbers are known as __.

What is the oxidation state and covalency of Al in [AlCl(H2O)5]2+

Can you please tell me in brief about all concept of matter in our surroundings

State what is observed when excess of ammonia is passed through an aqueous solution of lead nitrate.

Cryolite is

Let the mass of electron is 2 times mass of proton is 1/4 and mass of neutron so 3/2 of original mass Then the atomic wt of c atomic not and mass no 12

1. Which d block element has highest heat of atomisation?

Choose a non-metallic oxide from the following:

What is Debereiner’s law of triads? Explain with the help of one example of a Dobereiner’s triad.

A solution is prepared by adding 60 g of urea to 180 g of water. The mole frraction of urea and water are and respectively.