10223 + Interview Questions in Chemistry Page 97 InterviewSolution

4801.	500 ml of 0.1 M AlCl3 is mixed with 500 ml of 0.1 M MgCl2 solution . Then calculate molarity of CL- in final solution
Answer» 500 ml of 0.1 M AlCl3 is mixed with 500 ml of 0.1 M MgCl2 solution . Then calculate molarity of CL- in final solution

Discussion

4802.	Which of the following metals is used in the laboratory preparation of hydrogen gas?
Answer» Which of the following metals is used in the laboratory preparation of hydrogen gas?

Discussion

4803.	What is the molality of 1L of sulphuric acid which is 46% wt/ vol?Given the density of solution = 1.40g /cm3
Answer» What is the molality of 1L of sulphuric acid which is 46% wt/ vol? Given the density of solution = 1.40g /cm3

Discussion

4804.	Which ancient Indian philosopher suggested that all matter is composed of very small particles? What name was given by him to these particles?
Answer» Which ancient Indian philosopher suggested that all matter is composed of very small particles? What name was given by him to these particles?

Discussion

4805.	A piece of chalk can be broken into small particle on hammering,but it is not possible to break apiece of iron in the same fashion.why?
Answer» A piece of chalk can be broken into small particle on hammering,but it is not possible to break apiece of iron in the same fashion.why?

Discussion

4806.	What is meant by homogenous mixture
Answer» What is meant by homogenous mixture

Discussion

4807.	What is specific heat? Give specific heat capacity of water.
Answer» What is specific heat? Give specific heat capacity of water.

Discussion

4808.	Which of the following can be converted to a mixed fraction?
Answer» Which of the following can be converted to a mixed fraction?

Discussion

4809.	The specific conductance of a saturated solution of AgBr is k. The limiting ionic conductivity of Ag and Br ions are X and Y resp. The solubility of AgBr is
Answer» The specific conductance of a saturated solution of AgBr is k. The limiting ionic conductivity of Ag and Br ions are X and Y resp. The solubility of AgBr is

Discussion

4810.	If we consider that 1/6 in place of 1/12 mass of carbon atom is taken to be the relative atomic mass unit, themass of one mole of a substance will be
Answer» If we consider that 1/6 in place of 1/12 mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will be

Discussion

4811.	The chemical formula of the ionic compound containing Fe3+ and (SO4)2−is____.
Answer» The chemical formula of the ionic compound containing ${F e}^{3 +}$ and $(S O_{4})^{2 -}$ is____.

Discussion

4812.	Assertion: Carbon dioxide is used in fire extinguishers.Reason: Carbon dioxide is a colourless and odourless gas.
Answer» Assertion: Carbon dioxide is used in fire extinguishers. Reason: Carbon dioxide is a colourless and odourless gas.

4812.

Assertion: Carbon dioxide is used in fire extinguishers.Reason: Carbon dioxide is a colourless and odourless gas.

Answer»

Assertion: Carbon dioxide is used in fire extinguishers.

Reason: Carbon dioxide is a colourless and odourless gas.

Discussion

4813.	If the valency of an atom is 4 i.e it has 4 electrons in its outermost shell ,then would the atom gain electrons or lose electrons i.e would it acquirea positive charge or a negative charge
Answer» If the valency of an atom is 4 i.e it has 4 electrons in its outermost shell ,then would the atom gain electrons or lose electrons i.e would it acquirea positive charge or a negative charge

Discussion

4814.	The photoelectric effect can be understood on the basis of
Answer» The photoelectric effect can be understood on the basis of

Discussion

4815.	The mass of one molecule of a substance is -23 5.3210 g. What is its molecular mass?
Answer» The mass of one molecule of a substance is -23 5.3210 g. What is its molecular mass?

Discussion

4816.	(a) Show the formation of Na2O by the transfer of electrons between the combining atoms.(b) Why are ionic compounds usually hard?(c) How is it that ionic compounds in the sold state do not conduct electricity but they do so when in molten state?(d) What type of chemical bonds are present in CCl4?(e) What type of chemical bonds are present in MgCl2?
Answer» (a) Show the formation of Na₂O by the transfer of electrons between the combining atoms. (b) Why are ionic compounds usually hard? (c) How is it that ionic compounds in the sold state do not conduct electricity but they do so when in molten state? (d) What type of chemical bonds are present in CCl₄? (e) What type of chemical bonds are present in MgCl₂?

Discussion

4817.	What is fractional distillation
Answer» What is fractional distillation

Discussion

4818.	Arrange the following elements in the increasing order of metallic character : Si,Be,Mg,Na,P
Answer» Arrange the following elements in the increasing order of metallic character : $S i, B e, M g, N a, P$

Discussion

4819.	Iron and Cooper have dual valency but according to the electron configaratcon Iron should have a valenxv of 2 then why is there a second valency?
Answer» Iron and Cooper have dual valency but according to the electron configaratcon Iron should have a valenxv of 2 then why is there a second valency?

Discussion

4820.	10^12 alpha particles (nuclei of helium) fall per seconds on a neutral sphere,calculate the time in which the sphere gets charged by 2micro coulomb
Answer» 10^12 alpha particles (nuclei of helium) fall per seconds on a neutral sphere,calculate the time in which the sphere gets charged by 2micro coulomb

Discussion

4821.	Which of the following elements of the same group have a. Largest atomic size b. Highly reactive? F, Cl, Br
Answer» Which of the following elements of the same group have a. Largest atomic size b. Highly reactive? F, Cl, Br

Discussion

4822.	Aluminium reacts with oxygen to form .
Answer» Aluminium reacts with oxygen to form .

Discussion

4823.	Question 33 Fractional distillation is suitable for separation of miscible liquids with a boiling point difference of about 25 K or less. What part of fractional distillation apparatus makes it efficient and possess an advantage over a simple distillation process. Explain using a diagram.
Answer» Question 33 Fractional distillation is suitable for separation of miscible liquids with a boiling point difference of about 25 K or less. What part of fractional distillation apparatus makes it efficient and possess an advantage over a simple distillation process. Explain using a diagram.

Discussion

4824.	What is diffusion?
Answer» What is diffusion?

Discussion

4825.	Why does dry gas have more partial pressure than wet gas
Answer» Why does dry gas have more partial pressure than wet gas

Discussion

4826.	In an alloy of gold and cadmium, gold crystallines in cubic structure occupying the corners only and cadmium fits into edge centre voids, what is the formula of the alloy?
Answer» In an alloy of gold and cadmium, gold crystallines in cubic structure occupying the corners only and cadmium fits into edge centre voids, what is the formula of the alloy?

Discussion

4827.	which configuration is more accurate for calculating the valency in sub shells s,p,d,f, or shells k,l,m,n.??
Answer» ^{which configuration is more accurate for calculating the valency in sub shells s,p,d,f, or shells k,l,m,n.??}

Discussion

4828.	when an incense stick is lighted in one corner of a room its fragrance spread in the whole room quickly . Which characteristics of the particle is illustrated by this observation
Answer» when an incense stick is lighted in one corner of a room its fragrance spread in the whole room quickly . Which characteristics of the particle is illustrated by this observation

Discussion

4829.	We can show that iron is more reactive than copper :(1) by preparing copper sulphate solution and dipping iron strip in it (2) by dipping both the strips in water for some time(3) by preparing iron sulphate solution and dipping copper strip in it(4) by heating both iron and copper strips
Answer» We can show that iron is more reactive than copper : (1) by preparing copper sulphate solution and dipping iron strip in it (2) by dipping both the strips in water for some time (3) by preparing iron sulphate solution and dipping copper strip in it (4) by heating both iron and copper strips

Discussion

4830.	Which among the given compounds is/are held together by a covalent bond?
Answer» Which among the given compounds is/are held together by a covalent bond?

Discussion

4831.	Why group 13 is exception to electronegativity
Answer» Why group 13 is exception to electronegativity

Discussion

4832.	47. For principal quantum number n=5 the totol number of orbital having l=3 is
Answer» 47. For principal quantum number n=5 the totol number of orbital having l=3 is

Discussion

4833.	22. How tioCalculate n factor of h2 and oh- in the reduction of water
Answer» 22. How tioCalculate n factor of h2 and oh- in the reduction of water

Discussion

4834.	For an ideal solution with P°A > P°B , which of the following is true?(l= liquid phase, g=vapour phase)Options: Mole fraction of A(l) = Mole fraction of A(v)Mole fraction of AA(l) >Mole fraction of A(v)Mole fraction of A(l) < Mole fraction of A(v)No relationship in their mole fraction
Answer» For an ideal solution with P°A > P°B , which of the following is true? (l= liquid phase, g=vapour phase) Options: Mole fraction of A(l) = Mole fraction of A(v) Mole fraction of AA(l) >Mole fraction of A(v) Mole fraction of A(l) < Mole fraction of A(v) No relationship in their mole fraction

Discussion

4835.	23: Find out given cell is spontaneous or non-spontaneous.H/HPCell reactionH'/H2. If P1> P2 At anode H2H+2eP1H2At cathode 2H +2eP2Hence,P20.0591log2EcellcellPT\lbrack both electrodes are identical therefore Eel 0\rbrack0.0591logEcellP22If P, P then>Ecell Will have positive value therefore it will be spontaneous. MINE Q IS THAT IN LOG Y ITS TAKEN P2/P1 ITS SHOULD BE P1/P2 N IF I DO SO THEN I WOULD BE GETTING ECELL AS NEGATIVE
Answer» 23: Find out given cell is spontaneous or non-spontaneous.H/HPCell reactionH'/H2. If P1> P2 At anode H2H+2eP1H2At cathode 2H +2eP2Hence,P20.0591log2EcellcellPT\lbrack both electrodes are identical therefore Eel 0\rbrack0.0591logEcellP22If P, P then>Ecell Will have positive value therefore it will be spontaneous. MINE Q IS THAT IN LOG Y ITS TAKEN P2/P1 ITS SHOULD BE P1/P2 N IF I DO SO THEN I WOULD BE GETTING ECELL AS NEGATIVE

Discussion

4836.	Products obtained by the reaction of CaC2 and Al4C3 with heavy water respectively are:
Answer» Products obtained by the reaction of $C a C_{2}$ and $A l_{4} C_{3}$ with heavy water respectively are:

Discussion

4837.	70. What is odd electron bond
Answer» 70. What is odd electron bond

Discussion

4838.	Choose the correct statement regarding the conversion of ice into water.
Answer» Choose the correct statement regarding the conversion of ice into water.

Discussion

4839.	According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature (500oC)?
Answer» According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature $(500^{o} C)$ ?

Discussion

4840.	Classify the following mixtures as homogeneous or heterogeneous: (a)Tincture of iodine (b) Smoke (c) Brass (d) Sugar solution
Answer» Classify the following mixtures as homogeneous or heterogeneous: (a)Tincture of iodine (b) Smoke (c) Brass (d) Sugar solution

Discussion

4841.	3 The specific volume of ice and water are 1.089 and 1 ml/gm at 273 K. The molar heat of fusion of ice is 6.025 kJ/mole at 273K and 1 bar pressure. If 90 gram ice melts at 273K and 1 bar pressure, water is produced at that temperature, then calculate the values of delta H and delta U for the process.
Answer» 3 The specific volume of ice and water are 1.089 and 1 ml/gm at 273 K. The molar heat of fusion of ice is 6.025 kJ/mole at 273K and 1 bar pressure. If 90 gram ice melts at 273K and 1 bar pressure, water is produced at that temperature, then calculate the values of delta H and delta U for the process.

Discussion

4842.	Which of the following statements is not correct about vaporisation according to kinetic molecular theory?
Answer» Which of the following statements is not correct about vaporisation according to kinetic molecular theory?

Discussion

4843.	Which of the given statements is correct?Statement 1: Melting of wax is a physical change as the molten wax can be solidified on cooling. Statement 2: Burning of wax is a chemical change, as once the wax has been burnt, it cannot be brought back to its original form.
Answer» Which of the given statements is correct? Statement 1: Melting of wax is a physical change as the molten wax can be solidified on cooling. Statement 2: Burning of wax is a chemical change, as once the wax has been burnt, it cannot be brought back to its original form.

4843.

Which of the given statements is correct?Statement 1: Melting of wax is a physical change as the molten wax can be solidified on cooling. Statement 2: Burning of wax is a chemical change, as once the wax has been burnt, it cannot be brought back to its original form.

Answer»

Which of the given statements is correct?

Statement 1: Melting of wax is a physical change as the molten wax can be solidified on cooling.

Statement 2: Burning of wax is a chemical change, as once the wax has been burnt, it cannot be brought back to its original form.

Discussion

4844.	What is capillarity? What are its uses?
Answer» What is capillarity? What are its uses?

Discussion

4845.	what is the difference between saying that the a liquid is soluble is water and liquid reacts with water
Answer» what is the difference between saying that the a liquid is soluble is water and liquid reacts with water

Discussion

4846.	Is dalton atomic theory followed in present times as some of its point are proved wrong?
Answer» Is dalton atomic theory followed in present times as some of its point are proved wrong?

Discussion

4847.	If all the carbons present in 0.2 moles k2co3 converted into K4[Fe(CN)6] then mole of K4[Fe(CN)6] formed is
Answer» If all the carbons present in 0.2 moles k2co3 converted into K4[Fe(CN)6] then mole of K4[Fe(CN)6] formed is

Discussion

4848.	11.What is the pH of 0.1M ( PO43-)? If kb of PO43- is 4.5
Answer» 11.What is the pH of 0.1M ( PO43-)? If kb of PO43- is 4.5

Discussion

4849.	is nitrogen inert
Answer» is nitrogen inert

Discussion

4850.	Why do farmers sprinkle slaked lime in the fields during the rainy season?
Answer» Why do farmers sprinkle slaked lime in the fields during the rainy season?

Discussion

Explore topic-wise InterviewSolutions in .

500 ml of 0.1 M AlCl3 is mixed with 500 ml of 0.1 M MgCl2 solution . Then calculate molarity of CL- in final solution

Which of the following metals is used in the laboratory preparation of hydrogen gas?

What is the molality of 1L of sulphuric acid which is 46% wt/ vol?Given the density of solution = 1.40g /cm3

Which ancient Indian philosopher suggested that all matter is composed of very small particles? What name was given by him to these particles?

A piece of chalk can be broken into small particle on hammering,but it is not possible to break apiece of iron in the same fashion.why?

What is meant by homogenous mixture

What is specific heat? Give specific heat capacity of water.

Which of the following can be converted to a mixed fraction?

The specific conductance of a saturated solution of AgBr is k. The limiting ionic conductivity of Ag and Br ions are X and Y resp. The solubility of AgBr is

If we consider that 1/6 in place of 1/12 mass of carbon atom is taken to be the relative atomic mass unit, themass of one mole of a substance will be

The chemical formula of the ionic compound containing Fe3+ and (SO4)2−is____.

Assertion: Carbon dioxide is used in fire extinguishers.Reason: Carbon dioxide is a colourless and odourless gas.

If the valency of an atom is 4 i.e it has 4 electrons in its outermost shell ,then would the atom gain electrons or lose electrons i.e would it acquirea positive charge or a negative charge

The photoelectric effect can be understood on the basis of

The mass of one molecule of a substance is -23 5.3210 g. What is its molecular mass?

What is fractional distillation

Arrange the following elements in the increasing order of metallic character : Si,Be,Mg,Na,P

Iron and Cooper have dual valency but according to the electron configaratcon Iron should have a valenxv of 2 then why is there a second valency?

10^12 alpha particles (nuclei of helium) fall per seconds on a neutral sphere,calculate the time in which the sphere gets charged by 2micro coulomb

Which of the following elements of the same group have a. Largest atomic size b. Highly reactive? F, Cl, Br ​

Aluminium reacts with oxygen to form .

Question 33 Fractional distillation is suitable for separation of miscible liquids with a boiling point difference of about 25 K or less. What part of fractional distillation apparatus makes it efficient and possess an advantage over a simple distillation process. Explain using a diagram.

What is diffusion?

Why does dry gas have more partial pressure than wet gas

In an alloy of gold and cadmium, gold crystallines in cubic structure occupying the corners only and cadmium fits into edge centre voids, what is the formula of the alloy?

which configuration is more accurate for calculating the valency in sub shells s,p,d,f, or shells k,l,m,n.??

when an incense stick is lighted in one corner of a room its fragrance spread in the whole room quickly . Which characteristics of the particle is illustrated by this observation

We can show that iron is more reactive than copper :(1) by preparing copper sulphate solution and dipping iron strip in it (2) by dipping both the strips in water for some time(3) by preparing iron sulphate solution and dipping copper strip in it(4) by heating both iron and copper strips

Which among the given compounds is/are held together by a covalent bond?

Why group 13 is exception to electronegativity

47. For principal quantum number n=5 the totol number of orbital having l=3 is

22. How tioCalculate n factor of h2 and oh- in the reduction of water

For an ideal solution with P°A > P°B , which of the following is true?(l= liquid phase, g=vapour phase)Options: Mole fraction of A(l) = Mole fraction of A(v)Mole fraction of AA(l) >Mole fraction of A(v)Mole fraction of A(l) < Mole fraction of A(v)No relationship in their mole fraction

Products obtained by the reaction of CaC2 and Al4C3 with heavy water respectively are:

70. What is odd electron bond

Choose the correct statement regarding the conversion of ice into water.

According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature (500oC)?

Classify the following mixtures as homogeneous or heterogeneous: (a)Tincture of iodine (b) Smoke (c) Brass (d) Sugar solution

Which of the following statements is not correct about vaporisation according to kinetic molecular theory?

Which of the given statements is correct?Statement 1: Melting of wax is a physical change as the molten wax can be solidified on cooling. Statement 2: Burning of wax is a chemical change, as once the wax has been burnt, it cannot be brought back to its original form.

What is capillarity? What are its uses?

what is the difference between saying that the a liquid is soluble is water and liquid reacts with water

Is dalton atomic theory followed in present times as some of its point are proved wrong?

If all the carbons present in 0.2 moles k2co3 converted into K4[Fe(CN)6] then mole of K4[Fe(CN)6] formed is

11.What is the pH of 0.1M ( PO43-)? If kb of PO43- is 4.5

is nitrogen inert

Why do farmers sprinkle slaked lime in the fields during the rainy season?

Which of the following elements of the same group have a. Largest atomic size b. Highly reactive? F, Cl, Br