15280 + Interview Questions in Chemistry Page 110 InterviewSolution

5451.	Question 28.Which of the following statement is true for acids?(a) Bitter and change red litmus to blue(b) Sour and change red litmus to blue(c) Sour and change blue litmus to red(d) Bitter and change blue litmus to red
Answer» Question 28. Which of the following statement is true for acids? (a) Bitter and change red litmus to blue (b) Sour and change red litmus to blue (c) Sour and change blue litmus to red (d) Bitter and change blue litmus to red

Discussion

5452.	Which of the following xenon compounds have the same no. of lone pairs as there are in I_3^-? (1) XeO_4 (2) XeF_4 (3) XeF_2 (4) XeO_3
Answer» Which of the following xenon compounds have the same no. of lone pairs as there are in I_3^-? (1) XeO_4 (2) XeF_4 (3) XeF_2 (4) XeO_3

Discussion

5453.	Give reason for the following:Concentrated sulphuric acid is kept in airtight bottles.
Answer» Give reason for the following: Concentrated sulphuric acid is kept in airtight bottles.

Discussion

5454.	Mrs. Bhavana keeps his books by Single Entry System. You're required to prepare final accounts of her business for the year ended December 31, 2005. Her records relating to cash receipts and cash payments for the above period showed the following particulars Summary of cash ReceiptsAmt. (Rs.)PaymentsAmt. (Rs.)Opening balance of cash12,000Paid to creditors53,000Further capital20,000Business expenses12,000Received from debtors1,20,000Wages paid30,000Bhavana's drawings15,000Balance at bank onDec 31 200535,000Cash in hand7,000¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯1,52,000––––––––––¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯1,52,000–––––––––– The following information is aslo available ItemsJan 1, 2005 (Rs.)Dec 31, 2005 (Rs.)Debtors55,00085,000Creditors22,00029,000Stock35,00070,000Plant1,00,0001,00,000Machinery50,00050,000Land and Building2,50,0002,50,000Investment20,00020,000 All her sales and purchases were on credit. Provide depreciation on plant and building by 10% and machinery by 5%. Make a provision for bad debts by 5%.
Answer» Mrs. Bhavana keeps his books by Single Entry System. You're required to prepare final accounts of her business for the year ended December 31, 2005. Her records relating to cash receipts and cash payments for the above period showed the following particulars Summary of cash $\begin{matrix} Receipts & Amt. (Rs.) & Payments & Amt. (Rs.) Opening balance of cash & 12, 000 & Paid to creditors & 53, 000 Further capital & 20, 000 & Business expenses & 12, 000 Received from debtors & 1, 20, 000 & Wages paid & 30, 000 Bhavana's drawings & 15, 000 Balance at bank on Dec 31 2005 & 35, 000 Cash in hand & 7, 000 ¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯ 1, 52, 000 - -------- - & ¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯ 1, 52, 000 - -------- - \end{matrix}$ The following information is aslo available $\begin{matrix} Items & Jan 1, 2005 (Rs.) & Dec 31, 2005 (Rs.) Debtors & 55, 000 & 85, 000 Creditors & 22, 000 & 29, 000 Stock & 35, 000 & 70, 000 Plant & 1, 00, 000 & 1, 00, 000 Machinery & 50, 000 & 50, 000 Land and Building & 2, 50, 000 & 2, 50, 000 Investment & 20, 000 & 20, 000 \end{matrix}$ All her sales and purchases were on credit. Provide depreciation on plant and building by 10% and machinery by 5%. Make a provision for bad debts by 5%.

5454.

Mrs. Bhavana keeps his books by Single Entry System. You're required to prepare final accounts of her business for the year ended December 31, 2005. Her records relating to cash receipts and cash payments for the above period showed the following particulars Summary of cash ReceiptsAmt. (Rs.)PaymentsAmt. (Rs.)Opening balance of cash12,000Paid to creditors53,000Further capital20,000Business expenses12,000Received from debtors1,20,000Wages paid30,000Bhavana's drawings15,000Balance at bank onDec 31 200535,000Cash in hand7,000¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯1,52,000––––––––––¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯1,52,000–––––––––– The following information is aslo available ItemsJan 1, 2005 (Rs.)Dec 31, 2005 (Rs.)Debtors55,00085,000Creditors22,00029,000Stock35,00070,000Plant1,00,0001,00,000Machinery50,00050,000Land and Building2,50,0002,50,000Investment20,00020,000 All her sales and purchases were on credit. Provide depreciation on plant and building by 10% and machinery by 5%. Make a provision for bad debts by 5%.

Answer»

Mrs. Bhavana keeps his books by Single Entry System. You're required to prepare final accounts of her business for the year ended December 31, 2005. Her records relating to cash receipts and cash payments for the above period showed the following particulars

Summary of cash

$\begin{matrix} Receipts & Amt. (Rs.) & Payments & Amt. (Rs.) Opening balance of cash & 12, 000 & Paid to creditors & 53, 000 Further capital & 20, 000 & Business expenses & 12, 000 Received from debtors & 1, 20, 000 & Wages paid & 30, 000 Bhavana's drawings & 15, 000 Balance at bank on Dec 31 2005 & 35, 000 Cash in hand & 7, 000 ¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯ 1, 52, 000 - -------- - & ¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯ 1, 52, 000 - -------- - \end{matrix}$

The following information is aslo available

$\begin{matrix} Items & Jan 1, 2005 (Rs.) & Dec 31, 2005 (Rs.) Debtors & 55, 000 & 85, 000 Creditors & 22, 000 & 29, 000 Stock & 35, 000 & 70, 000 Plant & 1, 00, 000 & 1, 00, 000 Machinery & 50, 000 & 50, 000 Land and Building & 2, 50, 000 & 2, 50, 000 Investment & 20, 000 & 20, 000 \end{matrix}$

All her sales and purchases were on credit.
Provide depreciation on plant and building by 10% and machinery by 5%.
Make a provision for bad debts by 5%.

Discussion

5455.	How we can write electronic configuration of subshell and need eg
Answer» How we can write electronic configuration of subshell and need eg

Discussion

5456.	How many electrons are present in the outermost shell of a carbon atom?4
Answer» How many electrons are present in the outermost shell of a carbon atom? 4

Discussion

5457.	Avogadro number represents the number of atoms in___.
Answer» Avogadro number represents the number of atoms in___.

Discussion

5458.	Benzoic acids are used for
Answer» Benzoic acids are used for

Discussion

5459.	Which gas causes the bread or cake to rise making them soft and spongy?
Answer» Which gas causes the bread or cake to rise making them soft and spongy?

Discussion

5460.	Trichloroacetaldehyde CCl3CHO reacts with chlorobenzene in presence of sulphuric acid and producesWhich reaction is this
Answer» Trichloroacetaldehyde CCl3CHO reacts with chlorobenzene in presence of sulphuric acid and produces Which reaction is this

Discussion

5461.	A student placed Zn rod in FeSO_4 solution. After 10 hours when rod was taken out and it was observed that : (a) Zn rod became harmer. (b) Zn rod became thicker due to Iron deposition. (c) Zn rod remains as it was. (d) Zn rod has holes.
Answer» A student placed Zn rod in FeSO_4 solution. After 10 hours when rod was taken out and it was observed that : (a) Zn rod became harmer. (b) Zn rod became thicker due to Iron deposition. (c) Zn rod remains as it was. (d) Zn rod has holes.

Discussion

5462.	What do you mean by stability of an atom
Answer» What do you mean by stability of an atom

Discussion

5463.	The number of hydrogen atoms(s) attached to phosphorus atom in hypophosphorous acid is
Answer» The number of hydrogen atoms(s) attached to phosphorus atom in hypophosphorous acid is

Discussion

5464.	Write the chemical reaction where the following changes are observed. (a) Gas is evolved (b) Colour change is noticed (c) Precipitate is formed (d) Physical state is changed
Answer» Write the chemical reaction where the following changes are observed. (a) Gas is evolved (b) Colour change is noticed (c) Precipitate is formed (d) Physical state is changed

5464.

Write the chemical reaction where the following changes are observed. (a) Gas is evolved (b) Colour change is noticed (c) Precipitate is formed (d) Physical state is changed

Answer»

Write the chemical reaction where the following changes are observed.

(a) Gas is evolved

(b) Colour change is noticed

(c) Precipitate is formed

(d) Physical state is changed

Discussion

5465.	State why aluminium is extracted from its oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.
Answer» State why aluminium is extracted from its oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.

Discussion

5466.	Write chemical equation of the reaction of ethanoic acid with the following : (a) Sodium; (b) Sodium hydroxide; (c) Ethanol. Write the name of one main product of each reaction.
Answer» Write chemical equation of the reaction of ethanoic acid with the following : (a) Sodium; (b) Sodium hydroxide; (c) Ethanol. Write the name of one main product of each reaction.

Discussion

5467.	What causes the amphoteric property to some substances.? (For example,Ammonia)
Answer» What causes the amphoteric property to some substances.? (For example,Ammonia)

Discussion

5468.	Mendeleev predicted the existence of some elements that had not been discovered at that time and left some gaps in his periodic table. What are the names that he gave to the two undiscovered elements, gallium and germanium, respectively?
Answer» Mendeleev predicted the existence of some elements that had not been discovered at that time and left some gaps in his periodic table. What are the names that he gave to the two undiscovered elements, gallium and germanium, respectively?

Discussion

5469.	A mixture of hydrogen and oxygen at one bar pressure contains 20% by weight of hydrogen. Find the partial pressure of hydrogen.
Answer» A mixture of hydrogen and oxygen at one bar pressure contains 20% by weight of hydrogen. Find the partial pressure of hydrogen.

Discussion

5470.	12. m atoms of an element A is 20g .3m atoms of element B (atm.mass=30)is 45g.find atomic mass of A
Answer» 12. m atoms of an element A is 20g .3m atoms of element B (atm.mass=30)is 45g.find atomic mass of A

Discussion

5471.	What is hydride ions?
Answer» What is hydride ions?

Discussion

5472.	Sulphide ion reacts with solid sulphurS (aq)2− +S (s) ⇌S 2(aq)2− ;K 1 =10S (aq)2− +2S (s) ⇌S 3(aq)2− ;K 1′ =130The equilibrium constant for the formation of S 32− (aq) from S 22− (aq) and sulphur is:
Answer» Sulphide ion reacts with solid sulphur S (aq) 2− +S (s) ⇌S 2(aq) 2− ;K 1 =10 S (aq) 2− +2S (s) ⇌S 3(aq) 2− ;K 1 ′ =130 The equilibrium constant for the formation of S 3 2− (aq) from S 2 2− (aq) and sulphur is:

Discussion

5473.	Write names.a. Alloy of sodium with mercury.b. Molecular formula of the common ore of aluminium.c. The oxide that forms salt and water by reacting with both acid and base.d. The device used for grinding an ore.e. The nonmetal having electrical conductivity.f. The reagent that dissolves noble metals.
Answer» Write names. a. Alloy of sodium with mercury. b. Molecular formula of the common ore of aluminium. c. The oxide that forms salt and water by reacting with both acid and base. d. The device used for grinding an ore. e. The nonmetal having electrical conductivity. f. The reagent that dissolves noble metals.

Discussion

5474.	The bicarbonate of a metal has formula M(HCO3)2. The formula of its oxide will be (1)M2O (2)MO (3)MO2 (4)M2O3
Answer» The bicarbonate of a metal has formula M(HCO3)2. The formula of its oxide will be (1)M2O (2)MO (3)MO2 (4)M2O3

Discussion

5475.	Question 16.Which of the following phenomena occur, when a small amount of acid is added to water?(i) Ionisation(ii) Neutralisation(iii) Dilution(iv) FormationChoose the correct option from the following:(a) (i) and (ii)(b) (i) and (iii)(c) (ii) and (iii)(d) (ii) and (iv)
Answer» Question 16. Which of the following phenomena occur, when a small amount of acid is added to water? (i) Ionisation (ii) Neutralisation (iii) Dilution (iv) Formation Choose the correct option from the following: (a) (i) and (ii) (b) (i) and (iii) (c) (ii) and (iii) (d) (ii) and (iv)

5475.

Question 16.Which of the following phenomena occur, when a small amount of acid is added to water?(i) Ionisation(ii) Neutralisation(iii) Dilution(iv) FormationChoose the correct option from the following:(a) (i) and (ii)(b) (i) and (iii)(c) (ii) and (iii)(d) (ii) and (iv)

Answer»

Question 16.

Which of the following phenomena occur, when a small amount of acid is added to water?

(i) Ionisation

(ii) Neutralisation

(iii) Dilution

(iv) Formation

Choose the correct option from the following:

(a) (i) and (ii)

(b) (i) and (iii)

(c) (ii) and (iii)

(d) (ii) and (iv)

Discussion

5476.	27. What are cationic and anionic polymers?
Answer» 27. What are cationic and anionic polymers?

Discussion

5477.	the value of △ H and △ S for the reaction C_{(graphite) }+CO2 (g) →2CO2(g) are 170KJ and 170 JK^{-1} respectively this reaction will be spon†an eous at which temperature
Answer» the value of △ H and △ S for the reaction C_{(graphite) }+CO2 (g) →2CO2(g) are 170KJ and 170 JK^{-1} respectively this reaction will be spon†an eous at which temperature

Discussion

5478.	What are the salts of sulphuric acid called?give one example of such salt
Answer» What are the salts of sulphuric acid called?give one example of such salt

Discussion

5479.	What is the function of C2H5OH in presence of conc.H2SO4
Answer» What is the function of C2H5OH in presence of conc.H2SO4

Discussion

5480.	the product of angular speed and the †an gential speed of electron in nth orbit of hydrogen atom i
Answer» the product of angular speed and the †an gential speed of electron in nth orbit of hydrogen atom i

Discussion

5481.	2 mol of an ideal gas at 27 ° C is expanded reversibly from 2 lit to 20 lit. The entropy change will be (R=2cal/mol k)
Answer» 2 mol of an ideal gas at 27 ° C is expanded reversibly from 2 lit to 20 lit. The entropy change will be (R=2cal/mol k)

Discussion

5482.	Which of the following has the maximum nonmetallic character?
Answer» Which of the following has the maximum nonmetallic character?

Discussion

5483.	(CH3)3CHKMnO4−−−−−→A;CH3(CH2)2CH3HCl−−−→AlCl3B;CH3(CH2)4CH3Cr2O3,773K−−−−−−−→10−20 atmC; Correct statements are A. 'A' is tertiary alcohol B. 'B' contains a 3∘ carbon C. 'C' follows Huckel's rule D. both B and C are aromatic
Answer» $(C H_{3})_{3} C H K M n O_{4} - ---- \to A; C H_{3} (C H_{2})_{2} C H_{3} H C l - -- \to A l C l_{3} B; C H_{3} (C H_{2})_{4} C H_{3} C r_{2} O_{3}, 773 K - ------ \to 10 - 20 a t m C;$ Correct statements are A. 'A' is tertiary alcohol B. 'B' contains a $3^{\circ}$ carbon C. 'C' follows Huckel's rule D. both B and C are aromatic

5483.

(CH3)3CHKMnO4−−−−−→A;CH3(CH2)2CH3HCl−−−→AlCl3B;CH3(CH2)4CH3Cr2O3,773K−−−−−−−→10−20 atmC; Correct statements are A. 'A' is tertiary alcohol B. 'B' contains a 3∘ carbon C. 'C' follows Huckel's rule D. both B and C are aromatic

Answer»

$(C H_{3})_{3} C H K M n O_{4} - ---- \to A; C H_{3} (C H_{2})_{2} C H_{3} H C l - -- \to A l C l_{3} B; C H_{3} (C H_{2})_{4} C H_{3} C r_{2} O_{3}, 773 K - ------ \to 10 - 20 a t m C;$

Correct statements are

A. 'A' is tertiary alcohol B. 'B' contains a $3^{\circ}$ carbon

C. 'C' follows Huckel's rule D. both B and C are aromatic

Discussion

5484.	How many grams of solid NaOH must be added to 100ml of buffer solution which is 0.1M each w.r.t acid HA and salt Na+A- to make the pH of the solution 5.5 . given pka(HA) = 5 . (antilog of 0.5 = 3.16.
Answer» How many grams of solid NaOH must be added to 100ml of buffer solution which is 0.1M each w.r.t acid HA and salt Na+A- to make the pH of the solution 5.5 . given pka(HA) = 5 . (antilog of 0.5 = 3.16.

Discussion

5485.	How to name organic compounds using the IUPAC rules?
Answer» How to name organic compounds using the IUPAC rules?

Discussion

5486.	The IUPAC name of cinnamaldehyde is:
Answer» The IUPAC name of cinnamaldehyde is:

Discussion

5487.	What do you observe when acetic acid is added to : (a) sodium bicarbonate, (b) ethyl alcohol in the presence of sulphuric acid, (c) neutral FeCl3 solution?
Answer» What do you observe when acetic acid is added to : (a) sodium bicarbonate, (b) ethyl alcohol in the presence of sulphuric acid, (c) neutral $F e C l_{3}$ solution?

Discussion

5488.	When a green coloured compound reacts with ammonium hydroxide, a dirty green ppt. is formed along with ammonium sulphate. The precipitate formed is:
Answer» When a green coloured compound reacts with ammonium hydroxide, a dirty green ppt. is formed along with ammonium sulphate. The precipitate formed is:

Discussion

5489.	Is platinic chloride and chloroplatinate same??
Answer» Is platinic chloride and chloroplatinate same??

Discussion

5490.	A coil of inductance 2 H having negligible resistance is connected to a source of supply whose volatege is given by V=3 t volts ( where t is in seconds ) . If the voltage is applied when t=0, then the energy stored in the coil aften 4 sec is ______ J
Answer» A coil of inductance $2 H$ having negligible resistance is connected to a source of supply whose volatege is given by $V = 3 t volts$ ( where $t$ is in seconds ) . If the voltage is applied when $t = 0$ , then the energy stored in the coil aften $4 sec$ is ______ $J$

Discussion

5491.	Calcium, copper, lead, aluminium, zinc, chromium, magnesium, iron.Choose the major metals from the list given above to make the following alloys:(a) stainless steel(b) brass.
Answer» Calcium, copper, lead, aluminium, zinc, chromium, magnesium, iron. Choose the major metals from the list given above to make the following alloys: (a) stainless steel (b) brass.

Discussion

5492.	Which of the following best describes Micelle?
Answer» Which of the following best describes Micelle?

Discussion

5493.	47. Mass of two gm molecule of CuSO4.5H20 is
Answer» 47. Mass of two gm molecule of CuSO4.5H20 is

Discussion

5494.	Classify aqueous solutions of the following substances according to their pH into three groups : 7, more than 7, less than 7.Common salt, sodium acetate, hydrochloric acid, carbon dioxide, potassium bromide, calcium hydoxide, ammonium chloride, vinegar, sodium carbonate, ammonia, sulphur dioxide.
Answer» Classify aqueous solutions of the following substances according to their pH into three groups : 7, more than 7, less than 7. Common salt, sodium acetate, hydrochloric acid, carbon dioxide, potassium bromide, calcium hydoxide, ammonium chloride, vinegar, sodium carbonate, ammonia, sulphur dioxide.

Discussion

5495.	How is acetylene prepared in the laboratory ? (a) Draw a diagram. (b) Give an equation. (c) How is pure dry gas collected ?
Answer» How is acetylene prepared in the laboratory ? (a) Draw a diagram. (b) Give an equation. (c) How is pure dry gas collected ?

Discussion

5496.	How do we support that magnesium belongs to 2nd group and 3rd period?
Answer» How do we support that magnesium belongs to 2nd group and 3rd period?

Discussion

5497.	How will we know how many isomers bare possible bof a given compound?
Answer» How will we know how many isomers bare possible bof a given compound?

Discussion

5498.	Aqueous solution of urea is 20% by mass of solution. What is the percentage by mass of solvent?
Answer» Aqueous solution of urea is 20% by mass of solution. What is the percentage by mass of solvent?

Discussion

5499.	17. Calculate the number of moles of H2O in 10 moles of blue vitriol also calculate the no. of atoms in it.
Answer» 17. Calculate the number of moles of H2O in 10 moles of blue vitriol also calculate the no. of atoms in it.

Discussion

5500.	For the reaxn A+3B 2C+D Initial moles of A is twice thatcof B . If at eqbm moles of B and C are equal then percent of B reacted is
Answer» For the reaxn A+3B 2C+D Initial moles of A is twice thatcof B . If at eqbm moles of B and C are equal then percent of B reacted is

Discussion

Explore topic-wise InterviewSolutions in .

Question 28.Which of the following statement is true for acids?(a) Bitter and change red litmus to blue(b) Sour and change red litmus to blue(c) Sour and change blue litmus to red(d) Bitter and change blue litmus to red

Which of the following xenon compounds have the same no. of lone pairs as there are in I_3^-? (1) XeO_4 (2) XeF_4 (3) XeF_2 (4) XeO_3

Give reason for the following:Concentrated sulphuric acid is kept in airtight bottles.

How we can write electronic configuration of subshell and need eg

How many electrons are present in the outermost shell of a carbon atom?4

Avogadro number represents the number of atoms in___.

Benzoic acids are used for

Which gas causes the bread or cake to rise making them soft and spongy?

Trichloroacetaldehyde CCl3CHO reacts with chlorobenzene in presence of sulphuric acid and producesWhich reaction is this

A student placed Zn rod in FeSO_4 solution. After 10 hours when rod was taken out and it was observed that : (a) Zn rod became harmer. (b) Zn rod became thicker due to Iron deposition. (c) Zn rod remains as it was. (d) Zn rod has holes.

What do you mean by stability of an atom

The number of hydrogen atoms(s) attached to phosphorus atom in hypophosphorous acid is

Write the chemical reaction where the following changes are observed. (a) Gas is evolved (b) Colour change is noticed (c) Precipitate is formed (d) Physical state is changed

State why aluminium is extracted from its oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.

Write chemical equation of the reaction of ethanoic acid with the following : (a) Sodium; (b) Sodium hydroxide; (c) Ethanol. Write the name of one main product of each reaction.

What causes the amphoteric property to some substances.? (For example,Ammonia)

Mendeleev predicted the existence of some elements that had not been discovered at that time and left some gaps in his periodic table. What are the names that he gave to the two undiscovered elements, gallium and germanium, respectively?

A mixture of hydrogen and oxygen at one bar pressure contains 20% by weight of hydrogen. Find the partial pressure of hydrogen.

12. m atoms of an element A is 20g .3m atoms of element B (atm.mass=30)is 45g.find atomic mass of A

What is hydride ions?

Sulphide ion reacts with solid sulphurS (aq)2−​ +S (s)​ ⇌S 2(aq)2−​ ;K 1​ =10S (aq)2−​ +2S (s)​ ⇌S 3(aq)2−​ ;K 1′​ =130The equilibrium constant for the formation of S 32−​ (aq) from S 22−​ (aq) and sulphur is:

The bicarbonate of a metal has formula M(HCO3)2. The formula of its oxide will be (1)M2O (2)MO (3)MO2 (4)M2O3

Question 16.Which of the following phenomena occur, when a small amount of acid is added to water?(i) Ionisation(ii) Neutralisation(iii) Dilution(iv) FormationChoose the correct option from the following:(a) (i) and (ii)(b) (i) and (iii)(c) (ii) and (iii)(d) (ii) and (iv)

27. What are cationic and anionic polymers?

the value of △ H and △ S for the reaction C_{(graphite) }+CO2 (g) →2CO2(g) are 170KJ and 170 JK^{-1} respectively this reaction will be spon†an eous at which temperature

What are the salts of sulphuric acid called?give one example of such salt

What is the function of C2H5OH in presence of conc.H2SO4

the product of angular speed and the †an gential speed of electron in nth orbit of hydrogen atom i

2 mol of an ideal gas at 27 ° C is expanded reversibly from 2 lit to 20 lit. The entropy change will be (R=2cal/mol k)

Which of the following has the maximum nonmetallic character?

(CH3)3CHKMnO4−−−−−→A;CH3(CH2)2CH3HCl−−−→AlCl3B;CH3(CH2)4CH3Cr2O3,773K−−−−−−−→10−20 atmC; Correct statements are A. 'A' is tertiary alcohol B. 'B' contains a 3∘ carbon C. 'C' follows Huckel's rule D. both B and C are aromatic

How many grams of solid NaOH must be added to 100ml of buffer solution which is 0.1M each w.r.t acid HA and salt Na+A- to make the pH of the solution 5.5 . given pka(HA) = 5 . (antilog of 0.5 = 3.16.

How to name organic compounds using the IUPAC rules?

The IUPAC name of cinnamaldehyde is:

What do you observe when acetic acid is added to : (a) sodium bicarbonate, (b) ethyl alcohol in the presence of sulphuric acid, (c) neutral FeCl3 solution?

When a green coloured compound reacts with ammonium hydroxide, a dirty green ppt. is formed along with ammonium sulphate. The precipitate formed is:

Is platinic chloride and chloroplatinate same??

A coil of inductance 2 H having negligible resistance is connected to a source of supply whose volatege is given by V=3 t volts ( where t is in seconds ) . If the voltage is applied when t=0, then the energy stored in the coil aften 4 sec is ______ J

Calcium, copper, lead, aluminium, zinc, chromium, magnesium, iron.Choose the major metals from the list given above to make the following alloys:(a) stainless steel(b) brass.

Which of the following best describes Micelle?

47. Mass of two gm molecule of CuSO4.5H20 is

Classify aqueous solutions of the following substances according to their pH into three groups : 7, more than 7, less than 7.Common salt, sodium acetate, hydrochloric acid, carbon dioxide, potassium bromide, calcium hydoxide, ammonium chloride, vinegar, sodium carbonate, ammonia, sulphur dioxide.

How is acetylene prepared in the laboratory ? (a) Draw a diagram. (b) Give an equation. (c) How is pure dry gas collected ?

How do we support that magnesium belongs to 2nd group and 3rd period?

How will we know how many isomers bare possible bof a given compound?

Aqueous solution of urea is 20% by mass of solution. What is the percentage by mass of solvent?

17. Calculate the number of moles of H2O in 10 moles of blue vitriol also calculate the no. of atoms in it.

For the reaxn A+3B 2C+D Initial moles of A is twice thatcof B . If at eqbm moles of B and C are equal then percent of B reacted is

Sulphide ion reacts with solid sulphurS (aq)2− +S (s) ⇌S 2(aq)2− ;K 1 =10S (aq)2− +2S (s) ⇌S 3(aq)2− ;K 1′ =130The equilibrium constant for the formation of S 32− (aq) from S 22− (aq) and sulphur is: