10223 + Interview Questions in Chemistry Page 84 InterviewSolution

4151.	Making use only of substances chosen from those given below: Give the equations for the reactions by which you could obtain zinc carbonate (two steps required)
Answer» Making use only of substances chosen from those given below: Give the equations for the reactions by which you could obtain zinc carbonate (two steps required)

4151.

Making use only of substances chosen from those given below: Give the equations for the reactions by which you could obtain zinc carbonate (two steps required)

Answer»

Making use only of substances chosen from those given below:

Give the equations for the reactions by which you could obtain zinc carbonate (two steps required)

4152.	What is the net charge on an Ionic Compound?
Answer» What is the net charge on an Ionic Compound?

Discussion

4153.	Fe2O3+CO gives 2Fe+CO2 BALANCE THE EQUATION
Answer» Fe2O3+CO gives 2Fe+CO2 BALANCE THE EQUATION

4153.

Fe2O3+CO gives 2Fe+CO2 BALANCE THE EQUATION

Answer»

Fe2O3+CO gives 2Fe+CO2

BALANCE THE EQUATION

Discussion

4154.	What will be the action of the following substances on litmus paper ? Hydrochloric acid Moistened NH3 gas Lemon juice Carbonated soft drink Curd Soap solution
Answer» What will be the action of the following substances on litmus paper ? Hydrochloric acid Moistened ${NH}_{3}$ gas Lemon juice Carbonated soft drink Curd Soap solution

Discussion

4155.	Is there any way we can tell whether an element is a metal or a non metal without looking at the periodic table? Maybe through looking at their valencies?
Answer» Is there any way we can tell whether an element is a metal or a non metal without looking at the periodic table? Maybe through looking at their valencies?

Discussion

4156.	A metal carbonate 0.5 kg gives 0.28 kg of its oxide on heating. Hence the equivalent weight of metal is.
Answer» A metal carbonate 0.5 kg gives 0.28 kg of its oxide on heating. Hence the equivalent weight of metal is.

Discussion

4157.	In one of the industrial processes for manufacture of sodium hydroxide, a gas X is formed as by-product. The gas X reacts with lime water to give a compound Y which is used as a bleaching agent in chemical industry. Identify X and Y giving the chemical equation of the reactions involved.
Answer» In one of the industrial processes for manufacture of sodium hydroxide, a gas X is formed as by-product. The gas X reacts with lime water to give a compound Y which is used as a bleaching agent in chemical industry. Identify X and Y giving the chemical equation of the reactions involved.

Discussion

4158.	What volume of Helium will be expelled from a container containing 400cm^3 Helium at 7^†extdegree C.When the container is heated to 7^° C under the same pressure
Answer» What volume of Helium will be expelled from a container containing 400cm^3 Helium at 7^†extdegree C.When the container is heated to 7^° C under the same pressure

Discussion

4159.	Why the solubility of sodium chloride in water increase with rise in temperature while that of lithium carbonate decreases
Answer» Why the solubility of sodium chloride in water increase with rise in temperature while that of lithium carbonate decreases

Discussion

4160.	The first ionization potential of Na, Mg, Al and Si are in the order:
Answer» The first ionization potential of Na, Mg, Al and Si are in the order:

Discussion

4161.	40.Which is the largest element in group 17? Give reason
Answer» 40.Which is the largest element in group 17? Give reason

Discussion

4162.	primary valency of Co i \lbrack Co(NH3)5 Cl\rbrack C
Answer» primary valency of Co i \lbrack Co(NH3)5 Cl\rbrack C

Discussion

4163.	CH4 and C2H6 belong to the same homologous series and they differ by a unit.
Answer» $C H_{4}$ and $C_{2} H_{6}$ belong to the same homologous series and they differ by a unit.

Discussion

4164.	why KO2 is paramagneti
Answer» why KO2 is paramagneti

Discussion

4165.	(a) What are the two properties of carbon which lead to the huge number of carbon compounds we see around us ?(b) How does carbon reacts with oxygen?(c) Differentiate between diamond and graphite.
Answer» (a) What are the two properties of carbon which lead to the huge number of carbon compounds we see around us ? (b) How does carbon reacts with oxygen? (c) Differentiate between diamond and graphite.

4165.

(a) What are the two properties of carbon which lead to the huge number of carbon compounds we see around us ?(b) How does carbon reacts with oxygen?(c) Differentiate between diamond and graphite.

Answer»

(a) What are the two properties of carbon which lead to the huge number of carbon compounds we see around us ?

(b) How does carbon reacts with oxygen?

(c) Differentiate between diamond and graphite.

Discussion

4166.	melting point order for HF H_2O NH_3 AND H-bond strength of H_2O and H_2O and how their charge is calcula
Answer» melting point order for HF H_2O NH_3 AND H-bond strength of H_2O and H_2O and how their charge is calcula

Discussion

4167.	How much amounheating caco 3 in gram having percentage purity 50% produce 0.56 litre of co2 at STP on heating?
Answer» How much amounheating caco 3 in gram having percentage purity 50% produce 0.56 litre of co2 at STP on heating?

Discussion

4168.	Write molecular orbital electronic configuration of Helium, Lithium, Hydrogen, C2, N2, O2 and F2. Calculate the bond order and predict the magnitude of each species?
Answer» Write molecular orbital electronic configuration of Helium, Lithium, Hydrogen, C2, N2, O2 and F2. Calculate the bond order and predict the magnitude of each species?

Discussion

4169.	When magnesium metal is added to water, hydrogen gas, H2 is released. If 72 g of hydrogen gas is liberated in this reaction, how many number of moles of hydrogen gas is produced?Mg (s) + 2H2O (l) → Mg(OH)2 (aq) + H2 (g)
Answer» When magnesium metal is added to water, hydrogen gas, $H_{2}$ is released. If 72 g of hydrogen gas is liberated in this reaction, how many number of moles of hydrogen gas is produced? $Mg$ (s) + $2$ $H_{2} O$ (l) $\to$ $Mg {(OH)}_{2}$ (aq) + $H_{2}$ (g)

Discussion

4170.	is added to remove the hardness of water.
Answer» is added to remove the hardness of water.

Discussion

4171.	how to find electronic configuration of any given element
Answer» how to find electronic configuration of any given element

Discussion

4172.	Question 2When 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00 g of carbon is burnt in 50.00 g of oxygen? Which law of chemical combinations will govern your answer?
Answer» Question 2 When 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00 g of carbon is burnt in 50.00 g of oxygen? Which law of chemical combinations will govern your answer?

Discussion

4173.	Dust particles in air is a solution or colloid?
Answer» Dust particles in air is a solution or colloid?

Discussion

4174.	What is meant by pure substance and mixture?
Answer» What is meant by pure substance and mixture?

Discussion

4175.	What is particle nature and wave nature and what is the difference between them ?
Answer» What is particle nature and wave nature and what is the difference between them ?

Discussion

4176.	What name is given to the pair of atoms such as 147N and 157N?
Answer» What name is given to the pair of atoms such as $_{7}^{14} N a n d_{7}^{15} N$ ?

Discussion

4177.	Explain the process of formation of clouds.
Answer» Explain the process of formation of clouds.

Discussion

4178.	Thecombination of fe and sulphur in strong heat is called compound Is it is also called as a homogeneous mixture?
Answer» Thecombination of fe and sulphur in strong heat is called compound Is it is also called as a homogeneous mixture?

Discussion

4179.	Which one of the following has Frenkel defect[MP PMT 2000]
Answer» Which one of the following has Frenkel defect [MP PMT 2000]

4179.

Which one of the following has Frenkel defect[MP PMT 2000]

Answer»

Which one of the following has Frenkel defect

[MP PMT 2000]

Discussion

4180.	Which of the following questions, the Bohr's atomic model was not able to provide an answer for:
Answer» Which of the following questions, the Bohr's atomic model was not able to provide an answer for:

Discussion

4181.	27g Al will react completely with oxygen equals to
Answer» 27g Al will react completely with oxygen equals to

Discussion

4182.	The diameter of a balloon filled by 8 moles of He gas is 10 cm. If 7 moles of He gas effuses out in the night, then what would be the diameter of balloon in the next morning? Assume constant pressure and temperature for the gas.
Answer» The diameter of a balloon filled by 8 moles of He gas is 10 cm. If 7 moles of He gas effuses out in the night, then what would be the diameter of balloon in the next morning? Assume constant pressure and temperature for the gas.

Discussion

4183.	A hydrogen atom is in ground state in order to get six lines in its emission spectrum wavelength of incident radiation should be
Answer» A hydrogen atom is in ground state in order to get six lines in its emission spectrum wavelength of incident radiation should be

Discussion

4184.	What are covalent characters?
Answer» What are covalent characters?

Discussion

4185.	43.0.59 g of Ag salt of organic acid(molar mass) gives .36g of Ag.what is the basicity of its acid
Answer» 43.0.59 g of Ag salt of organic acid(molar mass) gives .36g of Ag.what is the basicity of its acid

Discussion

4186.	SC203 [ scandium(\|\|\|) oxide] is ionic or covalent ??
Answer» SC203 [ scandium(\|\|\|) oxide] is ionic or covalent ??

Discussion

4187.	Which of the following is not an application of electrolysis? Type in the appropriate number here. ___ Humphrey Davy's discovery of Sodium and Magnesium Gold plating of golden temple in Tirupathi Making primary batteries. Manufacture of NaOH and KOH Synthesis of pure copper from impure copper
Answer» Which of the following is not an application of electrolysis? Type in the appropriate number here. ___ Humphrey Davy's discovery of Sodium and Magnesium Gold plating of golden temple in Tirupathi Making primary batteries. Manufacture of NaOH and KOH Synthesis of pure copper from impure copper

Discussion

4188.	Which of the following statement is correct for a double displacement reaction?
Answer» Which of the following statement is correct for a double displacement reaction?

Discussion

4189.	Which of the following is not a mineral acid?(a) Hydrochloric acid(b) Citric acid(c) Sulphuric acid(d) Nitric acid
Answer» Which of the following is not a mineral acid? (a) Hydrochloric acid (b) Citric acid (c) Sulphuric acid (d) Nitric acid

Discussion

4190.	Hello sir/madam, In the concept of CONSTANT PROPORTION: For Carbon monoxide 3grms of carbon+4grms of oxygen =carbon monoxide By constant proportion: 1grm of carbon =4/3 gems of oxygen has been said in the vedio. My doubt is that why 1grm of carbon can be written as 3/4grms of oxygen.
Answer» Hello sir/madam, In the concept of CONSTANT PROPORTION: For Carbon monoxide 3grms of carbon+4grms of oxygen =carbon monoxide By constant proportion: 1grm of carbon =4/3 gems of oxygen has been said in the vedio. My doubt is that why 1grm of carbon can be written as 3/4grms of oxygen.

Discussion

4191.	Can matter change its state?
Answer» Can matter change its state?

Discussion

4192.	how much time taken by radioactive subs†an ce for full deca
Answer» how much time taken by radioactive subs†an ce for full deca

Discussion

4193.	what is isotopes
Answer» what is isotopes

Discussion

4194.	A balloon is filled with 15.5 g of water. What will be the number of water molecules contained in the balloon?
Answer» A balloon is filled with 15.5 g of water. What will be the number of water molecules contained in the balloon?

Discussion

4195.	A 2MeV proton is moving perpendicular to uniform magnetic field of 2.5T. The magnetic force on the proton :-1) 8×10^-12 N2) 4×10^-12 N3) 16×10^-12 N4) 2×10^-12 N
Answer» A 2MeV proton is moving perpendicular to uniform magnetic field of 2.5T. The magnetic force on the proton :- 1) 8×10^-12 N 2) 4×10^-12 N 3) 16×10^-12 N 4) 2×10^-12 N

Discussion

4196.	49. The circumference of first Bohr's orbit is 3.32 X 10-10m.If this circumference represents one wavelength, what is the velocity of electron in this orbit?
Answer» 49. The circumference of first Bohr's orbit is 3.32 X 10-10m.If this circumference represents one wavelength, what is the velocity of electron in this orbit?

Discussion

4197.	In an experiment, carbon disulphide was added to a test-tube containing a mixture of iron filings and sulphur powder as shown in the given diagrams :The correct observation is represented in diagram :(1) I(2) II(3) III(4) IV
Answer» In an experiment, carbon disulphide was added to a test-tube containing a mixture of iron filings and sulphur powder as shown in the given diagrams : The correct observation is represented in diagram : (1) I (2) II (3) III (4) IV

Discussion

4198.	The number of atoms in a certain volume of hydrogen is twice the number of atoms in the same volume of helium at the same temperature and pressure . Why?
Answer» The number of atoms in a certain volume of hydrogen is twice the number of atoms in the same volume of helium at the same temperature and pressure . Why?

Discussion

4199.	How Berzelius Hypothesis indicates individual existence of atoms?
Answer» How Berzelius Hypothesis indicates individual existence of atoms?

Discussion

4200.	On the basis of information available from the reaction: 43Al+O2→23Al2O3ΔG=−827 KJ/mol of O2. The minimum e.m.f. required to carry out electrolysis of Al2O3 is
Answer» On the basis of information available from the reaction: $\frac{4}{3} A l + O_{2} \to \frac{2}{3} A l_{2} O_{3} Δ G = - 827 K J / m o l$ of $O_{2}$ . The minimum e.m.f. required to carry out electrolysis of $A l_{2} O_{3}$ is

Discussion

Explore topic-wise InterviewSolutions in .

Making use only of substances chosen from those given below: Give the equations for the reactions by which you could obtain zinc carbonate (two steps required)

What is the net charge on an Ionic Compound?

Fe2O3+CO gives 2Fe+CO2 BALANCE THE EQUATION

What will be the action of the following substances on litmus paper ? Hydrochloric acid Moistened NH3 gas Lemon juice Carbonated soft drink Curd Soap solution

Is there any way we can tell whether an element is a metal or a non metal without looking at the periodic table? Maybe through looking at their valencies?

A metal carbonate 0.5 kg gives 0.28 kg of its oxide on heating. Hence the equivalent weight of metal is.

In one of the industrial processes for manufacture of sodium hydroxide, a gas X is formed as by-product. The gas X reacts with lime water to give a compound Y which is used as a bleaching agent in chemical industry. Identify X and Y giving the chemical equation of the reactions involved.

What volume of Helium will be expelled from a container containing 400cm^3 Helium at 7^†extdegree C.When the container is heated to 7^° C under the same pressure

Why the solubility of sodium chloride in water increase with rise in temperature while that of lithium carbonate decreases

The first ionization potential of Na, Mg, Al and Si are in the order:

40.Which is the largest element in group 17? Give reason

primary valency of Co i \lbrack Co(NH3)5 Cl\rbrack C

CH4 and C2H6 belong to the same homologous series and they differ by a unit.

why KO2 is paramagneti

(a) What are the two properties of carbon which lead to the huge number of carbon compounds we see around us ?(b) How does carbon reacts with oxygen?(c) Differentiate between diamond and graphite.

melting point order for HF H_2O NH_3 AND H-bond strength of H_2O and H_2O and how their charge is calcula

How much amounheating caco 3 in gram having percentage purity 50% produce 0.56 litre of co2 at STP on heating?

Write molecular orbital electronic configuration of Helium, Lithium, Hydrogen, C2, N2, O2 and F2. Calculate the bond order and predict the magnitude of each species?

When magnesium metal is added to water, hydrogen gas, H2 is released. If 72 g of hydrogen gas is liberated in this reaction, how many number of moles of hydrogen gas is produced?Mg (s) + 2H2O (l) → Mg(OH)2 (aq) + H2 (g) ​

is added to remove the hardness of water.

how to find electronic configuration of any given element

Question 2When 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00 g of carbon is burnt in 50.00 g of oxygen? Which law of chemical combinations will govern your answer?

Dust particles in air is a solution or colloid?

What is meant by pure substance and mixture?

What is particle nature and wave nature and what is the difference between them ?

What name is given to the pair of atoms such as 147N and 157N?

Explain the process of formation of clouds.

Thecombination of fe and sulphur in strong heat is called compound Is it is also called as a homogeneous mixture?

Which one of the following has Frenkel defect[MP PMT 2000]

Which of the following questions, the Bohr's atomic model was not able to provide an answer for:

27g Al will react completely with oxygen equals to

The diameter of a balloon filled by 8 moles of He gas is 10 cm. If 7 moles of He gas effuses out in the night, then what would be the diameter of balloon in the next morning? Assume constant pressure and temperature for the gas.

A hydrogen atom is in ground state in order to get six lines in its emission spectrum wavelength of incident radiation should be

What are covalent characters?

43.0.59 g of Ag salt of organic acid(molar mass) gives .36g of Ag.what is the basicity of its acid

SC203 [ scandium(|||) oxide] is ionic or covalent ??

Which of the following is not an application of electrolysis? Type in the appropriate number here. ___ Humphrey Davy's discovery of Sodium and Magnesium Gold plating of golden temple in Tirupathi Making primary batteries. Manufacture of NaOH and KOH Synthesis of pure copper from impure copper

Which of the following statement is correct for a double displacement reaction?

Which of the following is not a mineral acid?(a) Hydrochloric acid(b) Citric acid(c) Sulphuric acid(d) Nitric acid

Hello sir/madam, In the concept of CONSTANT PROPORTION: For Carbon monoxide 3grms of carbon+4grms of oxygen =carbon monoxide By constant proportion: 1grm of carbon =4/3 gems of oxygen has been said in the vedio. My doubt is that why 1grm of carbon can be written as 3/4grms of oxygen.

Can matter change its state?

how much time taken by radioactive subs†an ce for full deca

what is isotopes

A balloon is filled with 15.5 g of water. What will be the number of water molecules contained in the balloon?

A 2MeV proton is moving perpendicular to uniform magnetic field of 2.5T. The magnetic force on the proton :-1) 8×10^-12 N2) 4×10^-12 N3) 16×10^-12 N4) 2×10^-12 N

49. The circumference of first Bohr's orbit is 3.32 X 10-10m.If this circumference represents one wavelength, what is the velocity of electron in this orbit?

In an experiment, carbon disulphide was added to a test-tube containing a mixture of iron filings and sulphur powder as shown in the given diagrams :The correct observation is represented in diagram :(1) I(2) II(3) III(4) IV

The number of atoms in a certain volume of hydrogen is twice the number of atoms in the same volume of helium at the same temperature and pressure . Why?

How Berzelius Hypothesis indicates individual existence of atoms?

On the basis of information available from the reaction: 43Al+O2→23Al2O3ΔG=−827 KJ/mol of O2. The minimum e.m.f. required to carry out electrolysis of Al2O3 is

When magnesium metal is added to water, hydrogen gas, H2 is released. If 72 g of hydrogen gas is liberated in this reaction, how many number of moles of hydrogen gas is produced?Mg (s) + 2H2O (l) → Mg(OH)2 (aq) + H2 (g)