10223 + Interview Questions in Chemistry Page 94 InterviewSolution

4651.	Work out the formula for sulphur dioxide. (Valencies: S = 4; O = 2)
Answer» Work out the formula for sulphur dioxide. (Valencies: S = 4; O = 2)

Discussion

4652.	Define the term ions or radicals.
Answer» Define the term ions or radicals.

Discussion

4653.	Which of the following solutions show properties of a homogenous mixture? A. (Copper Sulphate Solution) B. (Water and Oil Solution) C. (Sugar Solution)
Answer» Which of the following solutions show properties of a homogenous mixture? A. (Copper Sulphate Solution) B. (Water and Oil Solution) C. (Sugar Solution)

4653.

Which of the following solutions show properties of a homogenous mixture? A. (Copper Sulphate Solution) B. (Water and Oil Solution) C. (Sugar Solution)

Answer»

Which of the following solutions show properties of a homogenous mixture?

A. (Copper Sulphate Solution)

B. (Water and Oil Solution)

C. (Sugar Solution)

Discussion

4654.	What is the effect of pressure on solubility of gases? Explain with an example.
Answer» What is the effect of pressure on solubility of gases? Explain with an example.

Discussion

4655.	At what temperature will the molar kinetic energy of 0.3 mol of He be the same as that of 0.4 mol of Ar at 400 K?
Answer» At what temperature will the molar kinetic energy of 0.3 mol of He be the same as that of 0.4 mol of Ar at 400 K?

Discussion

4656.	Can a material have relative permeability equal to one?
Answer» Can a material have relative permeability equal to one?

Discussion

4657.	79.Calculate the volume occupied at 27 degree celsius and 2 bar pressure of a gas evolved from 2ml solid co2.Given the density of slod co2 is 1.53 g/ml
Answer» 79.Calculate the volume occupied at 27 degree celsius and 2 bar pressure of a gas evolved from 2ml solid co2.Given the density of slod co2 is 1.53 g/ml

Discussion

4658.	When copper sulphate is added to a solution of ammoniaa) freezing point is loweredb) freezing point is raisedc) boiling point is raised d) both a and b
Answer» When copper sulphate is added to a solution of ammonia a) freezing point is lowered b) freezing point is raised c) boiling point is raised d) both a and b

Discussion

4659.	DDT on exposure to water decomposes. It's half-life=10 years. How much time it will take for its decomposition to 99%?
Answer» DDT on exposure to water decomposes. It's half-life= $10 years$ . How much time it will take for its decomposition to 99%?

Discussion

4660.	Give three uses of polyester.
Answer» Give three uses of polyester.

Discussion

4661.	An ionic salt exhibits colour only when _______.
Answer» An ionic salt exhibits colour only when _______.

Discussion

4662.	What is molarity of water? (density = 1 g/ml
Answer» What is molarity of water? (density = 1 g/ml

Discussion

4663.	How many helium atoms are present in 80 g of helium?
Answer» How many helium atoms are present in 80 g of helium?

Discussion

4664.	24. At 518 c , the rate of decomposition of a sample of gaseous acetaldehyde , initially at a pressure of 363 torr, was 1.00 torr sec when 5% had reacted and 0.5 torr /s when 33% had reacted. The ordrr of the reaction is:
Answer» 24. At 518 c , the rate of decomposition of a sample of gaseous acetaldehyde , initially at a pressure of 363 torr, was 1.00 torr sec when 5% had reacted and 0.5 torr /s when 33% had reacted. The ordrr of the reaction is:

Discussion

4665.	What happens when iron reacts with a concentrated nitric acid?
Answer» What happens when iron reacts with a concentrated nitric acid?

Discussion

4666.	what is the difference between heat capacity, molar capacity and specific heat capacity?
Answer» what is the difference between heat capacity, molar capacity and specific heat capacity?

Discussion

4667.	Differentiate 1)solution colloids and suspension on basis of properties.
Answer» Differentiate 1)solution colloids and suspension on basis of properties.

4667.

Differentiate 1)solution colloids and suspension on basis of properties.

Answer»

Differentiate

1)solution colloids and suspension on basis of properties.

Discussion

4668.	The ratio of radii of nuclei 13Al27 and 52XP is 3:5. The number of neutrons in the nuclei of X will be
Answer» The ratio of radii of nuclei $_{13} {Al}^{27}$ and $_{52} X^{P}$ is $3 : 5$ . The number of neutrons in the nuclei of X will be

Discussion

4669.	Calculate the formula unit mass of H2SO4
Answer» Calculate the formula unit mass of $H_{2} {S O}_{4}$

Discussion

4670.	28. How to find oxidation state for IUPAC of coordination compound
Answer» 28. How to find oxidation state for IUPAC of coordination compound

Discussion

4671.	Write scientific reason.A. Hydrogen is combustible, oxygen helps combustion, but water helps to extinguish fire.B. Constituent substances of a colloid cannot be separated by ordinary filtration.C. Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.D. A solid matter has the properties of definite shape and volume.
Answer» Write scientific reason. A. Hydrogen is combustible, oxygen helps combustion, but water helps to extinguish fire. B. Constituent substances of a colloid cannot be separated by ordinary filtration. C. Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass. D. A solid matter has the properties of definite shape and volume.

Discussion

4672.	Question 5Compare all the proposed models of an atom given in this chapter.
Answer» Question 5 Compare all the proposed models of an atom given in this chapter.

Discussion

4673.	when 1.04 g of Bacl2 is present in 100000g of solution the concentration of solution is
Answer» when 1.04 g of Bacl2 is present in 100000g of solution the concentration of solution is

Discussion

4674.	How to find x where x is unknown, the molecular form is C2×X6 and mass ratio is 4:1.
Answer» How to find x where x is unknown, the molecular form is $C_{2} \times X_{6}$ and mass ratio is 4:1.

Discussion

4675.	When alpha particles are sent through a thin metal foil, only one out of ten thousand rebounded. What did this observation lead to?
Answer» When alpha particles are sent through a thin metal foil, only one out of ten thousand rebounded. What did this observation lead to?

Discussion

4676.	Express molality in terms of mole fraction and also express mole fraction in terms of molality ?give the origin of two equation briefly
Answer» Express molality in terms of mole fraction and also express mole fraction in terms of molality ?give the origin of two equation briefly

Discussion

4677.	28. There are two closed containers A and B . Container A contains PCl5 has at 25^° C temperature and 1 bar pressure. Container B contains equilibrium mixture of gases obtained by partial decomposition of PCl5 (g) at the same temperature and pressure. Assuming that initially equal miles of PCl5 were taken into the containers (before decomposition), the gases are allowed to effuse through a pinhole in the containers . Which container will show higher rate of effusion ? Justify
Answer» 28. There are two closed containers A and B . Container A contains PCl5 has at 25^° C temperature and 1 bar pressure. Container B contains equilibrium mixture of gases obtained by partial decomposition of PCl5 (g) at the same temperature and pressure. Assuming that initially equal miles of PCl5 were taken into the containers (before decomposition), the gases are allowed to effuse through a pinhole in the containers . Which container will show higher rate of effusion ? Justify

Discussion

4678.	According to the octet rule an atom can have maximum ______ valence electron in its outermost shell. 8
Answer» According to the octet rule an atom can have maximum ______ valence electron in its outermost shell. 8

Discussion

4679.	Which among these is the relation between whole and the part?
Answer» Which among these is the relation between whole and the part?

Discussion

4680.	Write uses of PVC.
Answer» Write uses of PVC.

Discussion

4681.	Which of the following metals, in reaction with acids like HCl, do not form bubbles in the solution?
Answer» Which of the following metals, in reaction with acids like HCl, do not form bubbles in the solution?

Discussion

4682.	what is mole
Answer» what is mole

Discussion

4683.	What does principal quantum number represents?
Answer» What does principal quantum number represents?

Discussion

4684.	The frequency of the radiation required to have kinetic energy of the photoelectrons double the work function (ϕ) of the metal is - ϕ=4.5 eV
Answer» The frequency of the radiation required to have kinetic energy of the photoelectrons double the work function $(ϕ)$ of the metal is - $ϕ = 4.5 eV$

Discussion

4685.	What is the atomicity of sulphuric acid?
Answer» What is the atomicity of sulphuric acid?

Discussion

4686.	Which of the following is not a part of J. J. Thomson’s atomic model?
Answer» Which of the following is not a part of J. J. Thomson’s atomic model?

Discussion

4687.	Isotopes have different mass numbers because their nuclei contain different number of__.
Answer» Isotopes have different mass numbers because their nuclei contain different number of__.

Discussion

4688.	What is a compound? Give an example.
Answer» What is a compound? Give an example.

Discussion

4689.	we know that when one object is rubbed with other object they both acquire charge but of opposite chag es. what happen when we rub a glass rod with woollen cloth?what will be the charges of both?
Answer» we know that when one object is rubbed with other object they both acquire charge but of opposite chag es. what happen when we rub a glass rod with woollen cloth?what will be the charges of both?

Discussion

4690.	Why different elements have their different chemical properties and physical properties? Moreover what make them different?
Answer» Why different elements have their different chemical properties and physical properties? Moreover what make them different?

Discussion

4691.	The element which does not show d^0 configuration in its highest oxidation sate v ; Mn; Cr; Fe
Answer» The element which does not show d^0 configuration in its highest oxidation sate v ; Mn; Cr; Fe

Discussion

4692.	if in alloy of german silver Cu,Zn and Ni are present 31.75% ,32.5% and 35.75% by weight ,then empirical formula of alloy is
Answer» if in alloy of german silver Cu,Zn and Ni are present 31.75% ,32.5% and 35.75% by weight ,then empirical formula of alloy is

Discussion

4693.	33. CN is a strong field ligand. This is due to the fact that :- (1) It is a pseudohalide (2) It can accept electrons from metal species (3) It forms high spin complexes with metal species (4) It carries negative charge
Answer» 33. CN is a strong field ligand. This is due to the fact that :- (1) It is a pseudohalide (2) It can accept electrons from metal species (3) It forms high spin complexes with metal species (4) It carries negative charge

Discussion

4694.	Determine the final result when 200 gm of water and 20 gm of ice at 0∘C are in a calorimeter having a water equivalent of 30 gm. 50 gm of steam is passed into it at 100∘C . Take latent heat of fusion 80 cal/gm and latent heat of vaporization as 540 cal/gm
Answer» Determine the final result when 200 gm of water and 20 gm of ice at $0^{\circ} C$ are in a calorimeter having a water equivalent of 30 gm. 50 gm of steam is passed into it at $100^{\circ} C$ . Take latent heat of fusion 80 cal/gm and latent heat of vaporization as 540 cal/gm

Discussion

4695.	According to Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon? Explain also? 1.)n=6 to n=5. 2.)n=5 to n=4
Answer» According to Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon? Explain also? 1.)n=6 to n=5. 2.)n=5 to n=4

4695.

According to Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon? Explain also? 1.)n=6 to n=5. 2.)n=5 to n=4

Answer»

According to Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon? Explain also?

1.)n=6 to n=5. 2.)n=5 to n=4

Discussion

4696.	Question 4 (c)Explain the following giving examples. c. Colloid
Answer» Question 4 (c) Explain the following giving examples. c. Colloid

Discussion

4697.	P and Q are isobars, Q and R are isotopes. If dP,dQ and dR be the densities of nuclei P,Q andR respectively, then
Answer» $P$ and $Q$ are isobars, $Q$ and $R$ are isotopes. If $d_{P}, d_{Q} and d_{R}$ be the densities of nuclei $P, Q and R$ respectively, then

Discussion

4698.	What happens to an element Z if it's atom gains 3 electrons ?
Answer» What happens to an element Z if it's atom gains 3 electrons ?

Discussion

4699.	Describe Bohr’s stable orbit atomic model.
Answer» Describe Bohr’s stable orbit atomic model.

Discussion

4700.	If potential energy of an electron in hydrogen atom in first excited state taken to be zero.the kineticenergy of electron in ground state
Answer» If potential energy of an electron in hydrogen atom in first excited state taken to be zero. the kineticenergy of electron in ground state

Discussion

Explore topic-wise InterviewSolutions in .

Work out the formula for sulphur dioxide. (Valencies: S = 4; O = 2)

Define the term ions or radicals.

Which of the following solutions show properties of a homogenous mixture? A. (Copper Sulphate Solution) B. (Water and Oil Solution) C. (Sugar Solution)

What is the effect of pressure on solubility of gases? Explain with an example.

At what temperature will the molar kinetic energy of 0.3 mol of He be the same as that of 0.4 mol of Ar at 400 K?

Can a material have relative permeability equal to one?

79.Calculate the volume occupied at 27 degree celsius and 2 bar pressure of a gas evolved from 2ml solid co2.Given the density of slod co2 is 1.53 g/ml

When copper sulphate is added to a solution of ammoniaa) freezing point is loweredb) freezing point is raisedc) boiling point is raised d) both a and b

DDT on exposure to water decomposes. It's half-life=10 years. How much time it will take for its decomposition to 99%?

Give three uses of polyester.

An ionic salt exhibits colour only when _______.

What is molarity of water? (density = 1 g/ml

How many helium atoms are present in 80 g of helium?

24. At 518 c , the rate of decomposition of a sample of gaseous acetaldehyde , initially at a pressure of 363 torr, was 1.00 torr sec when 5% had reacted and 0.5 torr /s when 33% had reacted. The ordrr of the reaction is:

What happens when iron reacts with a concentrated nitric acid?

what is the difference between heat capacity, molar capacity and specific heat capacity?

Differentiate 1)solution colloids and suspension on basis of properties.

The ratio of radii of nuclei 13Al27 and 52XP is 3:5. The number of neutrons in the nuclei of X will be

Calculate the formula unit mass of H2SO4

28. How to find oxidation state for IUPAC of coordination compound

Question 5Compare all the proposed models of an atom given in this chapter.

when 1.04 g of Bacl2 is present in 100000g of solution the concentration of solution is

How to find x where x is unknown, the molecular form is C2×X6 and mass ratio is 4:1.

When alpha particles are sent through a thin metal foil, only one out of ten thousand rebounded. What did this observation lead to?

Express molality in terms of mole fraction and also express mole fraction in terms of molality ?give the origin of two equation briefly

According to the octet rule an atom can have maximum ______ valence electron in its outermost shell. 8

Which among these is the relation between whole and the part?

Write uses of PVC.

Which of the following metals, in reaction with acids like HCl, do not form bubbles in the solution?

what is mole

What does principal quantum number represents?

The frequency of the radiation required to have kinetic energy of the photoelectrons double the work function (ϕ) of the metal is - ϕ=4.5 eV

What is the atomicity of sulphuric acid?

Which of the following is not a part of J. J. Thomson’s atomic model?

Isotopes have different mass numbers because their nuclei contain different number of__.

What is a compound? Give an example.

we know that when one object is rubbed with other object they both acquire charge but of opposite chag es. what happen when we rub a glass rod with woollen cloth?what will be the charges of both?

Why different elements have their different chemical properties and physical properties? Moreover what make them different?

The element which does not show d^0 configuration in its highest oxidation sate v ; Mn; Cr; Fe

if in alloy of german silver Cu,Zn and Ni are present 31.75% ,32.5% and 35.75% by weight ,then empirical formula of alloy is

33. CN is a strong field ligand. This is due to the fact that :- (1) It is a pseudohalide (2) It can accept electrons from metal species (3) It forms high spin complexes with metal species (4) It carries negative charge

Determine the final result when 200 gm of water and 20 gm of ice at 0∘C are in a calorimeter having a water equivalent of 30 gm. 50 gm of steam is passed into it at 100∘C . Take latent heat of fusion 80 cal/gm and latent heat of vaporization as 540 cal/gm

According to Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon? Explain also? 1.)n=6 to n=5. 2.)n=5 to n=4

Question 4 (c)Explain the following giving examples. c. Colloid

P and Q are isobars, Q and R are isotopes. If dP,dQ and dR be the densities of nuclei P,Q andR respectively, then

What happens to an element Z if it's atom gains 3 electrons ?

Describe Bohr’s stable orbit atomic model.

If potential energy of an electron in hydrogen atom in first excited state taken to be zero.the kineticenergy of electron in ground state