15280 + Interview Questions in Chemistry Page 54 InterviewSolution

2651.	Write equations for the laboratory preparation of the following salts, using sulphuric acid:(i) iron (II) sulphate from the iron.(ii) copper sulphate from copper.(iii) lead sulphate from lead nitrate.(iv) sodium sulphate from sodium carbonate.
Answer» Write equations for the laboratory preparation of the following salts, using sulphuric acid: (i) iron (II) sulphate from the iron. (ii) copper sulphate from copper. (iii) lead sulphate from lead nitrate. (iv) sodium sulphate from sodium carbonate.

Discussion

2652.	Write no.of ions produced on complete association of 1mole of NaHCO3,aluminum sulphate, aluminum chloride and calcium sulphate
Answer» Write no.of ions produced on complete association of 1mole of NaHCO3,aluminum sulphate, aluminum chloride and calcium sulphate

Discussion

2653.	Which of the following is the weakest Bronsted base?
Answer» Which of the following is the weakest Bronsted base?

Discussion

2654.	ntFour one litre flasks are separately filled with the gases N2O4, SO3, C2H6, H2 at same room temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be?n ntn
Answer» ntFour one litre flasks are separately filled with the gases N2O4, SO3, C2H6, H2 at same room temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be?n ntn

Discussion

2655.	Any arsenic present is removed by reacting the mixture with :
Answer» Any arsenic present is removed by reacting the mixture with :

Discussion

2656.	75.A gaseous mixture contains one mole of each of ch4 and C2H6. Then the average molecular weight of the gaseous mixture is
Answer» 75.A gaseous mixture contains one mole of each of ch4 and C2H6. Then the average molecular weight of the gaseous mixture is

Discussion

2657.	18.Why H2O is polar ,whereas BeF2 is not?
Answer» 18.Why H2O is polar ,whereas BeF2 is not?

Discussion

2658.	why does icl3 dimerise and why this dimerisation is not shown by if3?
Answer» why does icl3 dimerise and why this dimerisation is not shown by if3?

Discussion

2659.	What volume of ccl4 (d= 1.6g/cc) contain 6.02*10^25 ccl4 molecules? A. 10.5L B. 250ml C. 9.625L D. 1.712L
Answer» What volume of ccl4 (d= 1.6g/cc) contain 6.02*10^25 ccl4 molecules? A. 10.5L B. 250ml C. 9.625L D. 1.712L

2659.

What volume of ccl4 (d= 1.6g/cc) contain 6.02*10^25 ccl4 molecules? A. 10.5L B. 250ml C. 9.625L D. 1.712L

Answer»

What volume of ccl4 (d= 1.6g/cc) contain 6.02*10^25 ccl4 molecules?

A. 10.5L

B. 250ml

C. 9.625L

D. 1.712L

Discussion

2660.	Reaction between carbon dioxide and methyl magnesium bromide followed by hydrolysis will give
Answer» Reaction between carbon dioxide and methyl magnesium bromide followed by hydrolysis will give

Discussion

2661.	The reaction a + b=c+d initially the concentration ofa and b are equal and at equilibrium the concentration of d will be twicethat of a what will be the equilibrium constant for the reaction
Answer» The reaction a + b=c+d initially the concentration ofa and b are equal and at equilibrium the concentration of d will be twicethat of a what will be the equilibrium constant for the reaction

Discussion

2662.	The molecular formula of a homologue of butane is : (a) C4H8 (b) C3H6 (c) C4H6 (d) C3H8
Answer» The molecular formula of a homologue of butane is : (a) $C_{4} H_{8}$ (b) $C_{3} H_{6}$ (c) $C_{4} H_{6}$ (d) $C_{3} H_{8}$

Discussion

2663.	The sealed containers of the same capacity and at the same temperature are filled with 44g of H2 in one and 44g of CO2 in the other.If the pressure of the carbon dioxide in the second container is 1atm that of hydrogen in the first container would be
Answer» The sealed containers of the same capacity and at the same temperature are filled with 44g of H2 in one and 44g of CO2 in the other.If the pressure of the carbon dioxide in the second container is 1atm that of hydrogen in the first container would be

Discussion

2664.	What's is acid
Answer» What's is acid

Discussion

2665.	A drop of olive oil of radius 0.25mm spreads into a circular film of radiys 5cm on the water surface. Estimate the thickness of the film
Answer» A drop of olive oil of radius 0.25mm spreads into a circular film of radiys 5cm on the water surface. Estimate the thickness of the film

Discussion

2666.	Which of the following compounds contain both ionic and covalent bonds 1)CH2Cl2 2)CHCl3 3)NaClO4 4)PCl3
Answer» Which of the following compounds contain both ionic and covalent bonds 1)CH2Cl2 2)CHCl3 3)NaClO4 4)PCl3

Discussion

2667.	Acid + base → X + Y;What is X and Y respectively?
Answer» Acid + base $\to$ X + Y; What is X and Y respectively?

2667.

Acid + base → X + Y;What is X and Y respectively?

Answer»

Acid + base $\to$ X + Y;

What is X and Y respectively?

Discussion

2668.	Which of the following has the highest melting point
Answer» Which of the following has the highest melting point

2668.

Which of the following has the highest melting point

Answer»

Which of the following has the highest melting point

Discussion

2669.	Dilute hydrochloric acid is added in turn to a mixture of iron and sulphur and to the compound formed between iron and sulphur. Name the gas formed in each case.
Answer» Dilute hydrochloric acid is added in turn to a mixture of iron and sulphur and to the compound formed between iron and sulphur. Name the gas formed in each case.

Discussion

2670.	What is the molecular mass of substance, each molecule of which contains 4 atoms of carbon and 10 atoms of hydrogen?
Answer» What is the molecular mass of substance, each molecule of which contains 4 atoms of carbon and 10 atoms of hydrogen?

Discussion

2671.	The value of ka for HCN is 5 into 10 to the power minus 10 at 25 degree Celsius how much volume of 5 molar KCN solution is required to be added to 10 ml of 2 molar HCN in order to maintain the pH 9(In ml) A. 5 B. 3 C. 1 D. 2
Answer» The value of ka for HCN is 5 into 10 to the power minus 10 at 25 degree Celsius how much volume of 5 molar KCN solution is required to be added to 10 ml of 2 molar HCN in order to maintain the pH 9(In ml) A. 5 B. 3 C. 1 D. 2

Discussion

2672.	Mrs. Anu started firm with a capital Rs. 4,00,000 on 1st July, 2011. She borrowed from her friends a sum of Rs. 1,00,000 at 10% per annum (interest paid) for business and brought a further amount to capital of Rs. 75,000 on Dec 31, 2011. Her position was Items(Rs.)Cash 30,000Stock4,70,000Debtors3,50,000Creditors3,00,000 She withdrew Rs. 8,000 per month for the year. Calculate profit or loss for the year and show your working clearly.
Answer» Mrs. Anu started firm with a capital Rs. 4,00,000 on 1st July, 2011. She borrowed from her friends a sum of Rs. 1,00,000 at 10% per annum (interest paid) for business and brought a further amount to capital of Rs. 75,000 on Dec 31, 2011. Her position was $\begin{matrix} Items & (Rs.) Cash & 30, 000 Stock & 4, 70, 000 Debtors & 3, 50, 000 Creditors & 3, 00, 000 \end{matrix}$ She withdrew Rs. 8,000 per month for the year. Calculate profit or loss for the year and show your working clearly.

2672.

Mrs. Anu started firm with a capital Rs. 4,00,000 on 1st July, 2011. She borrowed from her friends a sum of Rs. 1,00,000 at 10% per annum (interest paid) for business and brought a further amount to capital of Rs. 75,000 on Dec 31, 2011. Her position was Items(Rs.)Cash 30,000Stock4,70,000Debtors3,50,000Creditors3,00,000 She withdrew Rs. 8,000 per month for the year. Calculate profit or loss for the year and show your working clearly.

Answer»

Mrs. Anu started firm with a capital Rs. 4,00,000 on 1st July, 2011. She borrowed from her friends a sum of Rs. 1,00,000 at 10% per annum (interest paid) for business and brought a further amount to capital of Rs. 75,000 on Dec 31, 2011. Her position was

$\begin{matrix} Items & (Rs.) Cash & 30, 000 Stock & 4, 70, 000 Debtors & 3, 50, 000 Creditors & 3, 00, 000 \end{matrix}$

She withdrew Rs. 8,000 per month for the year.
Calculate profit or loss for the year and show your working clearly.

Discussion

2673.	To prevent its use as a beverage, alcohol is denatured by adding:
Answer» To prevent its use as a beverage, alcohol is denatured by adding:

Discussion

2674.	Oil and water can be separated from a mixture using __________ .
Answer» Oil and water can be separated from a mixture using __________ .

Discussion

2675.	9. A vessel contains 20g CO_2 gas at 585K. What masses of O_2 gas gas the vessel can hold at 293K?
Answer» 9. A vessel contains 20g CO_2 gas at 585K. What masses of O_2 gas gas the vessel can hold at 293K?

Discussion

2676.	Solution P has a pH of 13, solution Q has a pH of 6, and solution R has a pH of 2.Which solution:(a) will liberate ammonia from ammonium sulphate on heating?(b) is a strong acid?(c) contains molecules as well as ions?
Answer» Solution P has a pH of 13, solution Q has a pH of 6, and solution R has a pH of 2. Which solution: (a) will liberate ammonia from ammonium sulphate on heating? (b) is a strong acid? (c) contains molecules as well as ions?

Discussion

2677.	The ionisation energy of a hydrogen atom is 13.6 eV. The energy of the ground level in doubly ionised lithium is:A. -28.7 eVB. -54.4 eVC. -122.4 eVD. -13.6 eV
Answer» The ionisation energy of a hydrogen atom is 13.6 eV. The energy of the ground level in doubly ionised lithium is: A. -28.7 eV B. -54.4 eV C. -122.4 eV D. -13.6 eV

Discussion

2678.	What is the value of Y for a monoatomic gas?
Answer» What is the value of Y for a monoatomic gas?

Discussion

2679.	What is the volume of 6gm hydrogen at 1.5 atm and 273∘C ?
Answer» What is the volume of 6gm hydrogen at 1.5 atm and $273^{\circ} C$ ?

Discussion

2680.	A balloon is filled with hydrogen at room temp. It will burst if pressure exeeds 1.5bar.If at 3bar pressure the gas occupies 4.42 L volume upto what volume can the balloon be expander!
Answer» A balloon is filled with hydrogen at room temp. It will burst if pressure exeeds 1.5bar.If at 3bar pressure the gas occupies 4.42 L volume upto what volume can the balloon be expander!

Discussion

2681.	calculate the amperes of current required to liberate 5.6L of cl2 at STP in three hours during the electrolysis of brine9.5A 5.8A 1.5A 4.5A
Answer» calculate the amperes of current required to liberate 5.6L of cl2 at STP in three hours during the electrolysis of brine 9.5A 5.8A 1.5A 4.5A

Discussion

2682.	A solution of Naoh is 4 gl^-1 what volume of hcl gas at stp will nuetralize,50 ml of the alkali solution
Answer» A solution of Naoh is 4 gl^-1 what volume of hcl gas at stp will nuetralize,50 ml of the alkali solution

Discussion

2683.	12. Out of the following groups, choose the one which should be introduced in a dye or a drug to make it water soluble A) SO3H B) NO2 C) CH3 D) Cl
Answer» 12. Out of the following groups, choose the one which should be introduced in a dye or a drug to make it water soluble A) SO3H B) NO2 C) CH3 D) Cl

Discussion

2684.	(a) Give one use each of four different compounds of ammonia.(b) Describe two tests to identify ammonia and ammonium ions in an aqueous solution.
Answer» (a) Give one use each of four different compounds of ammonia. (b) Describe two tests to identify ammonia and ammonium ions in an aqueous solution.

Discussion

2685.	Write three physical properties of acetic acid.
Answer» Write three physical properties of acetic acid.

Discussion

2686.	You are provided with three watch glasses containing milk, petrol and mustard oil, respectively. Suppose you bring a burning candle near these materials one by one, which material(s) will catch fire instantly and why
Answer» You are provided with three watch glasses containing milk, petrol and mustard oil, respectively. Suppose you bring a burning candle near these materials one by one, which material(s) will catch fire instantly and why

Discussion

2687.	Question 106(i) The food table is given below information about 2 types of soup cream of tomato and sweet corn. Use these lables to answer the given questions. (all the serving are based on a 2000 calories diet.) Which can be measured more accurately the total amount of fat in cream of tomato soup or the total amount of fat in sweet corn soup ? Explain.
Answer» Question 106(i) The food table is given below information about 2 types of soup cream of tomato and sweet corn. Use these lables to answer the given questions. (all the serving are based on a 2000 calories diet.) Which can be measured more accurately the total amount of fat in cream of tomato soup or the total amount of fat in sweet corn soup ? Explain.

2687.

Question 106(i) The food table is given below information about 2 types of soup cream of tomato and sweet corn. Use these lables to answer the given questions. (all the serving are based on a 2000 calories diet.) Which can be measured more accurately the total amount of fat in cream of tomato soup or the total amount of fat in sweet corn soup ? Explain.

Answer»

Question 106(i)

The food table is given below information about 2 types of soup cream of tomato and sweet corn. Use these lables to answer the given questions. (all the serving are based on a 2000 calories diet.)
Which can be measured more accurately the total amount of fat in cream of tomato soup or the total amount of fat in sweet corn soup ? Explain.

Discussion

2688.	Which are not position isomers?
Answer» Which are not position isomers?

Discussion

2689.	60. 28 gm of N2 ya sis contained in a flask at a pressure 10atm and at temp of 57^° C. It 9s found that due to leakage in the flasks , the pressure is reduced by half and the temp 8s reduced to 27^° C. The quantity of N2 gas that leaked out is?
Answer» 60. 28 gm of N2 ya sis contained in a flask at a pressure 10atm and at temp of 57^° C. It 9s found that due to leakage in the flasks , the pressure is reduced by half and the temp 8s reduced to 27^° C. The quantity of N2 gas that leaked out is?

Discussion

2690.	the rate cons†an t is numerically the same for three ractions of first,second,thrid order respectively.Which one is true for rate of reaction concentration of reaction is greater than 1 M? (a) r_1=r_2=r_{3 }(b)r_1>r_2>r_3 (c) r_1
Answer» the rate cons†an t is numerically the same for three ractions of first,second,thrid order respectively.Which one is true for rate of reaction concentration of reaction is greater than 1 M? (a) r_1=r_2=r_{3 }(b)r_1>r_2>r_3 (c) r_1

Discussion

2691.	A neutral compound 'X' of molecular formula C2H6O on oxidation with acidified potassium dichromate gives a compound 'Y'. Compound 'X' reacts with 'Y' on warming in presence of conc. H2SO4 to give a sweet smelling substance 'Z'. What are 'X', 'Y' and 'Z'? Give equations of the reactions involved.
Answer» A neutral compound 'X' of molecular formula C₂H₆O on oxidation with acidified potassium dichromate gives a compound 'Y'. Compound 'X' reacts with 'Y' on warming in presence of conc. H₂SO₄to give a sweet smelling substance 'Z'. What are 'X', 'Y' and 'Z'? Give equations of the reactions involved.

Discussion

2692.	What is green chemistry?
Answer» What is green chemistry?

Discussion

2693.	The volume of O2(g) at STP required for the complete combustion of 11 g C3H8(g) is - Options: a- 11.2 L b- 28 L c-22.4 L d- 5.6 L
Answer» The volume of O2(g) at STP required for the complete combustion of 11 g C3H8(g) is - Options: a- 11.2 L b- 28 L c-22.4 L d- 5.6 L

Discussion

2694.	Which among the following exhibits incorrect collocation? a) Quantum jump b) Jump off c) Jump out of one’s skin d) Jump onto
Answer» Which among the following exhibits incorrect collocation? a) Quantum jump b) Jump off c) Jump out of one’s skin d) Jump onto

Discussion

2695.	In a given reaction, barium hydroxide reacts with ammonium chloride to form product X and Y. Identify X and Y. Ba(OH)2 + NH4Cl → X + Y
Answer» In a given reaction, barium hydroxide reacts with ammonium chloride to form product X and Y. Identify X and Y. Ba(OH)₂ + NH₄Cl → X + Y

Discussion

2696.	Is cobalt and nickel are similar in properties ? As they are placed in same group according to New land`s
Answer» Is cobalt and nickel are similar in properties ? As they are placed in same group according to New land`s

Discussion

2697.	What are polyamides and peptide links?
Answer» What are polyamides and peptide links?

Discussion

2698.	During electroplating of nickel on a substance, AQUEOUS NiSO4 is taken as electrolyte and current is passed . According to our book, the Ni2+ ions migrate to the cathode and take 2 electrons forming Ni metal on the cathode . Also, the Ni anode get decomposed as Ni2+ ions. But, at the cathode, H+ ions must go and undergo reduction by gaining ions because H+ is lower than Ni2+ in the electrochemical series and H+ can gain electrons more readily because of its small atomic size. Then why Ni+2 ions go to cathode and undergo reduction? Or should MOLTEN NiSO4 be taken as an electrolyte for electroplating of Nickel on a metal so that there are no H+ ions in the electrolyte and only Ni2+ ions go at cathode and get deposited on the metal ?
Answer» During electroplating of nickel on a substance, AQUEOUS NiSO_{4 is taken as electrolyte}and current is passed . According to our book, the Ni²⁺ ions migrate to the cathode and take 2 electrons forming Ni metal on the cathode . Also, the Ni anode get decomposed as Ni²⁺ ions. But, at the cathode, H+ ions must go and undergo reduction by gaining ions because H+ is lower than Ni2+ in the electrochemical series and H+ can gain electrons more readily because of its small atomic size. Then why Ni+2 ions go to cathode and undergo reduction? Or should MOLTEN NiSO4 be taken as an electrolyte for electroplating of Nickel on a metal so that there are no H⁺ ions in the electrolyte and only Ni²⁺ ions go at cathode and get deposited on the metal ?

2698.

During electroplating of nickel on a substance, AQUEOUS NiSO4 is taken as electrolyte and current is passed . According to our book, the Ni2+ ions migrate to the cathode and take 2 electrons forming Ni metal on the cathode . Also, the Ni anode get decomposed as Ni2+ ions. But, at the cathode, H+ ions must go and undergo reduction by gaining ions because H+ is lower than Ni2+ in the electrochemical series and H+ can gain electrons more readily because of its small atomic size. Then why Ni+2 ions go to cathode and undergo reduction? Or should MOLTEN NiSO4 be taken as an electrolyte for electroplating of Nickel on a metal so that there are no H+ ions in the electrolyte and only Ni2+ ions go at cathode and get deposited on the metal ?

Answer»

During electroplating of nickel on a substance, AQUEOUS NiSO_{4 is taken as electrolyte}and current is passed . According to our book, the Ni²⁺ ions migrate to the cathode and take 2 electrons forming Ni metal on the cathode . Also, the Ni anode get decomposed as Ni²⁺ ions.

But, at the cathode, H+ ions must go and undergo reduction by gaining ions because H+ is lower than Ni2+ in the electrochemical series and H+ can gain electrons more readily because of its small atomic size. Then why Ni+2 ions go to cathode and undergo reduction?

Or should MOLTEN NiSO4 be taken as an electrolyte for electroplating of Nickel on a metal so that there are no H⁺ ions in the electrolyte and only Ni²⁺ ions go at cathode and get deposited on the metal ?

Discussion

2699.	Give the reason for the following: Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals.
Answer» Give the reason for the following: Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals.

Discussion

2700.	Question 48Differentiate between an artery and a vein.
Answer» Question 48 Differentiate between an artery and a vein.

Discussion

Explore topic-wise InterviewSolutions in .

Write equations for the laboratory preparation of the following salts, using sulphuric acid:(i) iron (II) sulphate from the iron.(ii) copper sulphate from copper.(iii) lead sulphate from lead nitrate.(iv) sodium sulphate from sodium carbonate.

Write no.of ions produced on complete association of 1mole of NaHCO3,aluminum sulphate, aluminum chloride and calcium sulphate

Which of the following is the weakest Bronsted base?

ntFour one litre flasks are separately filled with the gases N2O4, SO3, C2H6, H2 at same room temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be?n ntn

Any arsenic present is removed by reacting the mixture with :

75.A gaseous mixture contains one mole of each of ch4 and C2H6. Then the average molecular weight of the gaseous mixture is

18.Why H2O is polar ,whereas BeF2 is not?

why does icl3 dimerise and why this dimerisation is not shown by if3?

What volume of ccl4 (d= 1.6g/cc) contain 6.02*10^25 ccl4 molecules? A. 10.5L B. 250ml C. 9.625L D. 1.712L

Reaction between carbon dioxide and methyl magnesium bromide followed by hydrolysis will give

The reaction a + b=c+d initially the concentration ofa and b are equal and at equilibrium the concentration of d will be twicethat of a what will be the equilibrium constant for the reaction

The molecular formula of a homologue of butane is : (a) C4H8 (b) C3H6 (c) C4H6 (d) C3H8

The sealed containers of the same capacity and at the same temperature are filled with 44g of H2 in one and 44g of CO2 in the other.If the pressure of the carbon dioxide in the second container is 1atm that of hydrogen in the first container would be

What's is acid

A drop of olive oil of radius 0.25mm spreads into a circular film of radiys 5cm on the water surface. Estimate the thickness of the film

Which of the following compounds contain both ionic and covalent bonds 1)CH2Cl2 2)CHCl3 3)NaClO4 4)PCl3

Acid + base → X + Y;What is X and Y respectively?

Which of the following has the highest melting point

Dilute hydrochloric acid is added in turn to a mixture of iron and sulphur and to the compound formed between iron and sulphur. Name the gas formed in each case.

What is the molecular mass of substance, each molecule of which contains 4 atoms of carbon and 10 atoms of hydrogen?

The value of ka for HCN is 5 into 10 to the power minus 10 at 25 degree Celsius how much volume of 5 molar KCN solution is required to be added to 10 ml of 2 molar HCN in order to maintain the pH 9(In ml) A. 5 B. 3 C. 1 D. 2

To prevent its use as a beverage, alcohol is denatured by adding:

Oil and water can be separated from a mixture using __________ .

9. A vessel contains 20g CO_2 gas at 585K. What masses of O_2 gas gas the vessel can hold at 293K?

Solution P has a pH of 13, solution Q has a pH of 6, and solution R has a pH of 2.Which solution:(a) will liberate ammonia from ammonium sulphate on heating?(b) is a strong acid?(c) contains molecules as well as ions?

The ionisation energy of a hydrogen atom is 13.6 eV. The energy of the ground level in doubly ionised lithium is:A. -28.7 eVB. -54.4 eVC. -122.4 eVD. -13.6 eV

What is the value of Y for a monoatomic gas?

What is the volume of 6gm hydrogen at 1.5 atm and 273∘C ?

A balloon is filled with hydrogen at room temp. It will burst if pressure exeeds 1.5bar.If at 3bar pressure the gas occupies 4.42 L volume upto what volume can the balloon be expander!

calculate the amperes of current required to liberate 5.6L of cl2 at STP in three hours during the electrolysis of brine9.5A 5.8A 1.5A 4.5A

A solution of Naoh is 4 gl^-1 what volume of hcl gas at stp will nuetralize,50 ml of the alkali solution

12. Out of the following groups, choose the one which should be introduced in a dye or a drug to make it water soluble A) SO3H B) NO2 C) CH3 D) Cl

(a) Give one use each of four different compounds of ammonia.(b) Describe two tests to identify ammonia and ammonium ions in an aqueous solution.

Write three physical properties of acetic acid.

You are provided with three watch glasses containing milk, petrol and mustard oil, respectively. Suppose you bring a burning candle near these materials one by one, which material(s) will catch fire instantly and why​

Which are not position isomers?

60. 28 gm of N2 ya sis contained in a flask at a pressure 10atm and at temp of 57^° C. It 9s found that due to leakage in the flasks , the pressure is reduced by half and the temp 8s reduced to 27^° C. The quantity of N2 gas that leaked out is?

the rate cons†an t is numerically the same for three ractions of first,second,thrid order respectively.Which one is true for rate of reaction concentration of reaction is greater than 1 M? (a) r_1=r_2=r_{3 }(b)r_1>r_2>r_3 (c) r_1

A neutral compound 'X' of molecular formula C2H6O on oxidation with acidified potassium dichromate gives a compound 'Y'. Compound 'X' reacts with 'Y' on warming in presence of conc. H2SO4 to give a sweet smelling substance 'Z'. What are 'X', 'Y' and 'Z'? Give equations of the reactions involved.

What is green chemistry?

The volume of O2(g) at STP required for the complete combustion of 11 g C3H8(g) is - Options: a- 11.2 L b- 28 L c-22.4 L d- 5.6 L

Which among the following exhibits incorrect collocation? a) Quantum jump b) Jump off c) Jump out of one’s skin d) Jump onto

In a given reaction, barium hydroxide reacts with ammonium chloride to form product X and Y. Identify X and Y. Ba(OH)2 + NH4Cl → X + Y

Is cobalt and nickel are similar in properties ? As they are placed in same group according to New land`s

What are polyamides and peptide links?

Give the reason for the following: Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals.

Question 48Differentiate between an artery and a vein.

You are provided with three watch glasses containing milk, petrol and mustard oil, respectively. Suppose you bring a burning candle near these materials one by one, which material(s) will catch fire instantly and why