15280 + Interview Questions in Chemistry Page 164 InterviewSolution

8151.	a compound of metal m and nitrogen with formula m3n2 contains 28% nitrogen. find atomic mass of metal
Answer» a compound of metal m and nitrogen with formula m3n2 contains 28% nitrogen. find atomic mass of metal

Discussion

8152.	calculate the mass of N2 which contains same number of molecules as a present in 4.4 grams of carbon dioxide
Answer» calculate the mass of N2 which contains same number of molecules as a present in 4.4 grams of carbon dioxide

Discussion

8153.	calculate the final volume of reaction mixture when 10l CO and 10l O2 are allowed to react same pressure and temperature.
Answer» calculate the final volume of reaction mixture when 10l CO and 10l O2 are allowed to react same pressure and temperature.

Discussion

8154.	Th least reactive metal among the following is : (a) sodium (b) silver (c) copper (d) lead
Answer» Th least reactive metal among the following is : (a) sodium (b) silver (c) copper (d) lead

Discussion

8155.	(a) What volume of oxygen is required to burn completely a mixture of 22.4 dm3 of methane and 11.2 dm3 of hydrogen into carbon dioxide and steam? Equations of the reactions are given below:CH4 + 2O2 → CO2 + 2H2O2H2 + O2 → 2H2O(Assume that all volumes are measured at STP)(b) The gases hydrogen, oxygen, carbon dioxide, sulphur dioxide and chlorine are arranged in order of their increasing relative molecular mass. Given 8 g of each gas at STP, which gas will contain the least number of molecules and which gas the most?
Answer» (a) What volume of oxygen is required to burn completely a mixture of 22.4 dm³of methane and 11.2 dm³ of hydrogen into carbon dioxide and steam? Equations of the reactions are given below: CH₄ + 2O₂ $\overset{}{\to}$ CO₂ + 2H₂O 2H₂ + O₂ $\overset{}{\to}$ 2H₂O (Assume that all volumes are measured at STP) (b) The gases hydrogen, oxygen, carbon dioxide, sulphur dioxide and chlorine are arranged in order of their increasing relative molecular mass. Given 8 g of each gas at STP, which gas will contain the least number of molecules and which gas the most?

Discussion

8156.	36.Two spheres a and b having radii of 3 cm and 5 cm respectively are coated with carbon black on their surface. The wavelength of radiations corresponding to maximum intensity of emission are 300nm and 500nm respectively. The respective powers radiated bt them are in the ratio?
Answer» 36.Two spheres a and b having radii of 3 cm and 5 cm respectively are coated with carbon black on their surface. The wavelength of radiations corresponding to maximum intensity of emission are 300nm and 500nm respectively. The respective powers radiated bt them are in the ratio?

Discussion

8157.	find the volume of O2 at STP required for the complete combustion of 4g CH4 i)5.6L ii)2.88L iii)22.4L iv)11.2
Answer» find the volume of O2 at STP required for the complete combustion of 4g CH4 i)5.6L ii)2.88L iii)22.4L iv)11.2

Discussion

8158.	Do non - metals react with cold water ??
Answer» Do non - metals react with cold water ??

Discussion

8159.	a container contains ch4 and so3 in 3: 5 weight ratio .calculate the ratio of partial pressure of ch4 and so3
Answer» a container contains ch4 and so3 in 3: 5 weight ratio .calculate the ratio of partial pressure of ch4 and so3

Discussion

8160.	10 g NaCl solution is mixed with 17 g of silver nitrate solution. Calculate the weight of silver chloride precipitated.AgNO3 + NaCl → AgCl + NaNO3 [Ag = 108]
Answer» 10 g NaCl solution is mixed with 17 g of silver nitrate solution. Calculate the weight of silver chloride precipitated. AgNO₃ + NaCl $\overset{}{\to}$ AgCl + NaNO₃ [Ag = 108]

Discussion

8161.	Write balanced equations for the reaction of dilute hydrochloric acid with each of the following: [5 MARKS] (a) Iron (b) Sodium hydrogen carbonate (c) Iron(II) sulphide (d) Sodium sulphite (e) Sodium thiosulphate solution
Answer» Write balanced equations for the reaction of dilute hydrochloric acid with each of the following: [5 MARKS] (a) Iron (b) Sodium hydrogen carbonate (c) Iron(II) sulphide (d) Sodium sulphite (e) Sodium thiosulphate solution

Discussion

8162.	Butanone is a four-carbon compound with the functional group
Answer» Butanone is a four-carbon compound with the functional group

Discussion

8163.	Which of these reactions release hydrogen gas?
Answer» Which of these reactions release hydrogen gas?

Discussion

8164.	14. If Zeffective of sodium is x then Z effective of carbon is a)x +.90 b)x+1.50 c)x+1.95 d)x+.40
Answer» 14. If Zeffective of sodium is x then Z effective of carbon is a)x +.90 b)x+1.50 c)x+1.95 d)x+.40

Discussion

8165.	If CO gas is dissolved in water till the saturation level. If we will increase the temperature of the water then what will happen:
Answer» If CO gas is dissolved in water till the saturation level. If we will increase the temperature of the water then what will happen:

Discussion

8166.	What are the main sources of alkanes and why they are known as saturated hydrocarbons?
Answer» What are the main sources of alkanes and why they are known as saturated hydrocarbons?

Discussion

8167.	What is the outer cladding of Taj Mahal made up of?
Answer» What is the outer cladding of Taj Mahal made up of?

Discussion

8168.	Which of the following hydrocarbons undergo addition reactions:C2H6,C3H8,C3H6,C2H2 and CH4.
Answer» Which of the following hydrocarbons undergo addition reactions: $C_{2} H_{6}, C_{3} H_{8}, C_{3} H_{6}, C_{2} H_{2} and C H_{4} .$

Discussion

8169.	It is given that Bayer's process is employed. Which of the following steps are observed in this process?
Answer» It is given that Bayer's process is employed. Which of the following steps are observed in this process?

Discussion

8170.	64. Formation of coloured ions
Answer» 64. Formation of coloured ions

Discussion

8171.	The percentage of gold present in 20 carat gold is __________a) 100b) 50c) 73.86d) 83.33
Answer» The percentage of gold present in 20 carat gold is __________ a) 100 b) 50 c) 73.86 d) 83.33

Discussion

8172.	Example of : acid +metal Bicarbonate -------> salt + water+ carbon dioxide
Answer» Example of : acid +metal Bicarbonate -------> salt + water+ carbon dioxide

8172.

Example of : acid +metal Bicarbonate -------> salt + water+ carbon dioxide

Answer»

Example of :

acid +metal Bicarbonate -------> salt + water+ carbon dioxide

Discussion

8173.	Which substance is formed when aluminium reacts with oxygen?
Answer» Which substance is formed when aluminium reacts with oxygen?

Discussion

8174.	15. The acidity and basicity of BaxHy(PO4)2 respectively? (1) 2 and 4 (2) 4 and 2 (3) 3 and 3 (4) none
Answer» 15. The acidity and basicity of BaxHy(PO4)2 respectively? (1) 2 and 4 (2) 4 and 2 (3) 3 and 3 (4) none

Discussion

8175.	Find the odd one out from the following:C3H8, C5H10, C2H6, CH4
Answer» Find the odd one out from the following: C₃H₈, C₅H₁₀, C₂H₆, CH₄

Discussion

8176.	Differentiate metals and non metals based on their reaction with oxygen, water and acids.
Answer» Differentiate metals and non metals based on their reaction with oxygen, water and acids.

Discussion

8177.	Why we take carbon for describ the 1amu
Answer» Why we take carbon for describ the 1amu

Discussion

8178.	Which of the following does not give formaldehyde on heating or distillation?
Answer» Which of the following does not give formaldehyde on heating or distillation?

Discussion

8179.	What are the features of the reactivity series of metal?
Answer» What are the features of the reactivity series of metal?

Discussion

8180.	A. What do you observe when carbon dioxide gas is passed through lime water?B. Explain nitrogen fixation process.
Answer» A. What do you observe when carbon dioxide gas is passed through lime water? B. Explain nitrogen fixation process.

Discussion

8181.	A blacksmith grinds edges of iron axe against a spinning wheel to sharpen it. Sparks of fire and heat are generated. We can conclude that -
Answer» A blacksmith grinds edges of iron axe against a spinning wheel to sharpen it. Sparks of fire and heat are generated. We can conclude that -

Discussion

8182.	5g of MnO2 on reaction with HCl forms 1.12L of Cl2 gas at STP. The impurity of MnO2 is
Answer» 5g of MnO2 on reaction with HCl forms 1.12L of Cl2 gas at STP. The impurity of MnO2 is

Discussion

8183.	Which of the below is/are isomers of n-nonane C9H20?
Answer» Which of the below is/are isomers of n-nonane $C_{9} H_{20}$ ?

Discussion

8184.	Which of the following statement regarding Avogadro's law is incorrect?
Answer» Which of the following statement regarding Avogadro's law is incorrect?

Discussion

8185.	What ia an endothermic reaction?
Answer» What ia an endothermic reaction?

Discussion

8186.	Give two uses each of:(i) methane(ii) ethane
Answer» Give two uses each of: (i) methane (ii) ethane

Discussion

8187.	The functional group in methanol and meth`anal respectively are:
Answer» The functional group in methanol and meth`anal respectively are:

Discussion

8188.	An alloy is ___.
Answer» An alloy is ___.

Discussion

8189.	Govind Ltd. issued 5,000, 12% of Rs 100 each, at par, payable as follows: On Appliacation Rs 20; On Allotment Rs 20; On first Call Rs 30; and On Final Call Rs 30. Public applied for 6,000 debentures. Applications for 4,500 debentures were accepted in full. Applications for 800 debentures were allotted 500 debentures and applications for 700 debentures were rejected. Money overpaid on applications was utilised towards allotment. Pass journal entries assuming that all moneys due were duly received, except final call on 200 debentures.
Answer» Govind Ltd. issued 5,000, $12 %$ of Rs 100 each, at par, payable as follows: On Appliacation Rs 20; On Allotment Rs 20; On first Call Rs 30; and On Final Call Rs 30. Public applied for 6,000 debentures. Applications for 4,500 debentures were accepted in full. Applications for 800 debentures were allotted 500 debentures and applications for 700 debentures were rejected. Money overpaid on applications was utilised towards allotment. Pass journal entries assuming that all moneys due were duly received, except final call on 200 debentures.

8189.

Govind Ltd. issued 5,000, 12% of Rs 100 each, at par, payable as follows: On Appliacation Rs 20; On Allotment Rs 20; On first Call Rs 30; and On Final Call Rs 30. Public applied for 6,000 debentures. Applications for 4,500 debentures were accepted in full. Applications for 800 debentures were allotted 500 debentures and applications for 700 debentures were rejected. Money overpaid on applications was utilised towards allotment. Pass journal entries assuming that all moneys due were duly received, except final call on 200 debentures.

Answer»

Govind Ltd. issued 5,000, $12 %$ of Rs 100 each, at par, payable as follows:

On Appliacation Rs 20; On Allotment Rs 20; On first Call Rs 30; and On Final Call Rs 30.

Public applied for 6,000 debentures. Applications for 4,500 debentures were accepted in full. Applications for 800 debentures were allotted 500 debentures and applications for 700 debentures were rejected. Money overpaid on applications was utilised towards allotment.

Pass journal entries assuming that all moneys due were duly received, except final call on 200 debentures.

Discussion

8190.	CuO reacting with HCl is an example of a ___ reaction.
Answer» $C u O$ reacting with $H C l$ is an example of a ___ reaction.

Discussion

8191.	Which one of the following compounds of Groups-14 elements is not known?
Answer» Which one of the following compounds of Groups-14 elements is not known?

Discussion

8192.	The solid product formed when two gases combine is
Answer» The solid product formed when two gases combine is

Discussion

8193.	Give two properties of alloys which are different from its constituent metals.
Answer» Give two properties of alloys which are different from its constituent metals.

Discussion

8194.	Find the relation between electron's magnetic dipole moment and angular momentum.
Answer» Find the relation between electron's magnetic dipole moment and angular momentum.

Discussion

8195.	Answer the following:(1) What is the importance of a chemical equation?(2) What do you observe when H2S gas is passed through Cadmium Chloride solution? Name the type of reaction.(3) What do you understand by the term “Redox Reactions” Explain with one example.(4) What is corrosion? Do gold ornaments corrode? Justify.
Answer» Answer the following: (1) What is the importance of a chemical equation? (2) What do you observe when H₂S gas is passed through Cadmium Chloride solution? Name the type of reaction. (3) What do you understand by the term “Redox Reactions” Explain with one example. (4) What is corrosion? Do gold ornaments corrode? Justify.

8195.

Answer the following:(1) What is the importance of a chemical equation?(2) What do you observe when H2S gas is passed through Cadmium Chloride solution? Name the type of reaction.(3) What do you understand by the term “Redox Reactions” Explain with one example.(4) What is corrosion? Do gold ornaments corrode? Justify.

Answer»

Answer the following:

(1) What is the importance of a chemical equation?

(2) What do you observe when H₂S gas is passed through Cadmium Chloride solution? Name the type of reaction.

(3) What do you understand by the term “Redox Reactions” Explain with one example.

(4) What is corrosion? Do gold ornaments corrode? Justify.

Discussion

8196.	Draw the electron dot structure for: (a) ethanoic acid(b) ethanol(c) F2
Answer» Draw the electron dot structure for: (a) ethanoic acid (b) ethanol (c) $F_{2}$

Discussion

8197.	Write down any five properties along with their definitions by which metals and non-metals are distinguished.
Answer» Write down any five properties along with their definitions by which metals and non-metals are distinguished.

Discussion

8198.	When iron nails are added to an aqueous solution of copper sulphate, a chemical change occurs. Which of the following is/are true about this reaction?
Answer» When iron nails are added to an aqueous solution of copper sulphate, a chemical change occurs. Which of the following is/are true about this reaction?

Discussion

8199.	How to find no.of spectral lines for hydrogen atom
Answer» How to find no.of spectral lines for hydrogen atom

Discussion

8200.	What is the ch3 in the palmitic acid Ch3-ch2(14)-cooh Ch2(14) is R group Cooh is the structural part But what is this ch3 !
Answer» What is the ch3 in the palmitic acid Ch3-ch2(14)-cooh Ch2(14) is R group Cooh is the structural part But what is this ch3 !

Discussion

Explore topic-wise InterviewSolutions in .

a compound of metal m and nitrogen with formula m3n2 contains 28% nitrogen. find atomic mass of metal

calculate the mass of N2 which contains same number of molecules as a present in 4.4 grams of carbon dioxide

calculate the final volume of reaction mixture when 10l CO and 10l O2 are allowed to react same pressure and temperature.

Th least reactive metal among the following is : (a) sodium (b) silver (c) copper (d) lead

36.Two spheres a and b having radii of 3 cm and 5 cm respectively are coated with carbon black on their surface. The wavelength of radiations corresponding to maximum intensity of emission are 300nm and 500nm respectively. The respective powers radiated bt them are in the ratio?

find the volume of O2 at STP required for the complete combustion of 4g CH4 i)5.6L ii)2.88L iii)22.4L iv)11.2

Do non - metals react with cold water ??

a container contains ch4 and so3 in 3: 5 weight ratio .calculate the ratio of partial pressure of ch4 and so3

10 g NaCl solution is mixed with 17 g of silver nitrate solution. Calculate the weight of silver chloride precipitated.AgNO3 + NaCl → AgCl + NaNO3 [Ag = 108]

Write balanced equations for the reaction of dilute hydrochloric acid with each of the following: [5 MARKS] (a) Iron (b) Sodium hydrogen carbonate (c) Iron(II) sulphide (d) Sodium sulphite (e) Sodium thiosulphate solution

Butanone is a four-carbon compound with the functional group

Which of these reactions release hydrogen gas?

14. If Zeffective of sodium is x then Z effective of carbon is a)x +.90 b)x+1.50 c)x+1.95 d)x+.40

If CO gas is dissolved in water till the saturation level. If we will increase the temperature of the water then what will happen:

What are the main sources of alkanes and why they are known as saturated hydrocarbons?

What is the outer cladding of Taj Mahal made up of?

Which of the following hydrocarbons undergo addition reactions:C2H6,C3H8,C3H6,C2H2 and CH4.

It is given that Bayer's process is employed. Which of the following steps are observed in this process?

64. Formation of coloured ions

The percentage of gold present in 20 carat gold is __________a) 100b) 50c) 73.86d) 83.33

Example of : acid +metal Bicarbonate -------&gt; salt + water+ carbon dioxide

Which substance is formed when aluminium reacts with oxygen?

15. The acidity and basicity of BaxHy(PO4)2 respectively? (1) 2 and 4 (2) 4 and 2 (3) 3 and 3 (4) none

Find the odd one out from the following:C3H8, C5H10, C2H6, CH4

Differentiate metals and non metals based on their reaction with oxygen, water and acids.

Why we take carbon for describ the 1amu

Which of the following does not give formaldehyde on heating or distillation?

What are the features of the reactivity series of metal?

A. What do you observe when carbon dioxide gas is passed through lime water?B. Explain nitrogen fixation process.

A blacksmith grinds edges of iron axe against a spinning wheel to sharpen it. Sparks of fire and heat are generated. We can conclude that -

5g of MnO2 on reaction with HCl forms 1.12L of Cl2 gas at STP. The impurity of MnO2 is

Which of the below is/are isomers of n-nonane C9H20?

Which of the following statement regarding Avogadro's law is incorrect?

What ia an endothermic reaction?

Give two uses each of:(i) methane(ii) ethane

The functional group in methanol and meth`anal respectively are:

An alloy is ___.

CuO reacting with HCl is an example of a ___ reaction.

Which one of the following compounds of Groups-14 elements is not known?

The solid product formed when two gases combine is

Give two properties of alloys which are different from its constituent metals.

Find the relation between electron's magnetic dipole moment and angular momentum.

Draw the electron dot structure for: (a) ethanoic acid(b) ethanol(c) F2

Write down any five properties along with their definitions by which metals and non-metals are distinguished.

When iron nails are added to an aqueous solution of copper sulphate, a chemical change occurs. Which of the following is/are true about this reaction?

How to find no.of spectral lines for hydrogen atom

What is the ch3 in the palmitic acid Ch3-ch2(14)-cooh Ch2(14) is R group Cooh is the structural part But what is this ch3 !

Example of : acid +metal Bicarbonate -------> salt + water+ carbon dioxide