5083 + Interview Questions in Chemistry Page 12 InterviewSolution

551.	how much amount of CuSO4.5H2O required for liberation of 2.54 g I2 when titrated with KI An 4.99gm
Answer» how much amount of CuSO4.5H2O required for liberation of 2.54 g I2 when titrated with KI An 4.99gm

Discussion

552.	What are indicators used for? Give some examples of naturally occurring indicators. [3 MARKS]
Answer» What are indicators used for? Give some examples of naturally occurring indicators. [3 MARKS]

Discussion

553.	A student mixed equal volumes of hydrochloric acid and sodium hydroxide solution of same concentrations in a beaker and tested the pH of the resulting mixture with a pH paper. What will be the colour of pH paper in this case ?(1) red (2) yellow(3) green(4) blue
Answer» A student mixed equal volumes of hydrochloric acid and sodium hydroxide solution of same concentrations in a beaker and tested the pH of the resulting mixture with a pH paper. What will be the colour of pH paper in this case ? (1) red (2) yellow (3) green (4) blue

Discussion

554.	A balanced chemical equation always obeys:
Answer» A balanced chemical equation always obeys:

Discussion

555.	___ allows the solute to dissolve in it and form a solution.
Answer» ___ allows the solute to dissolve in it and form a solution.

Discussion

556.	Classify the following examples into physical or chemical change. [1 MARK] 1) Photosynthesis and burning of coal 2) Dissolving sugar in water and melting of wax
Answer» Classify the following examples into physical or chemical change. [1 MARK] 1) Photosynthesis and burning of coal 2) Dissolving sugar in water and melting of wax

Discussion

557.	Sorter's disease is caused by:
Answer» Sorter's disease is caused by:

Discussion

558.	Explain the various steps that take place in water purification systems.
Answer» Explain the various steps that take place in water purification systems.

Discussion

559.	Sketch the field lines of a positively charged plane conductor.
Answer» Sketch the field lines of a positively charged plane conductor.

Discussion

560.	What are the objectives of Chandrayaan-1?
Answer» What are the objectives of Chandrayaan-1?

Discussion

561.	What is physical change? Plz explain me.....
Answer» What is physical change? Plz explain me.....

Discussion

562.	Is gallium also used in thermometers?
Answer» Is gallium also used in thermometers?

Discussion

563.	Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity ρC,ρT,ρMandρA respectively. Then :
Answer» Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity $ρ_{C}, ρ_{T}, ρ_{M} and ρ_{A}$ respectively. Then :

Discussion

564.	What is the role of each knitting needles?
Answer» What is the role of each knitting needles?

Discussion

565.	Mention the changes that are always, desirable, undesirable and periodic.
Answer» Mention the changes that are always, desirable, undesirable and periodic.

Discussion

566.	A block of iron sinks in fluid A but floats in another liquid B, this is because:
Answer» A block of iron sinks in fluid $A$ but floats in another liquid $B$ , this is because:

Discussion

567.	Paheli while moving in a forest observed that there was no noise pollution, though lots of heavy vehicles were passing from the nearby highway. Explain.
Answer» Paheli while moving in a forest observed that there was no noise pollution, though lots of heavy vehicles were passing from the nearby highway. Explain.

Discussion

568.	Distilled water is
Answer» Distilled water is

Discussion

569.	Relative humidity is expressed as
Answer» Relative humidity is expressed as

Discussion

570.	Complete the following reaction: HCl(aq)+NaOH(aq)→?
Answer» Complete the following reaction: $HCl (aq) + NaOH (aq) \to ?$

570.

Complete the following reaction: HCl(aq)+NaOH(aq)→?

Answer»

Complete the following reaction:

$HCl (aq) + NaOH (aq) \to ?$

Discussion

571.	How many atoms are there in a molecule of carbon dioxide?
Answer» How many atoms are there in a molecule of carbon dioxide?

Discussion

572.	Which stability order is incorrect- (1) [Fe(C2O4)3]^-3 > [Fe(H2O)6]^3+ (2) [Fe(EDTA)]^2- > [Fe(en)3]3+ (3) [Ni(en)2]^2+ > [Ni(dmg)2] (4) [Fe(CN)6]^3- > [Fe(CN)6]4-
Answer» Which stability order is incorrect- (1) [Fe(C2O4)3]^-3 > [Fe(H2O)6]^3+ (2) [Fe(EDTA)]^2- > [Fe(en)3]3+ (3) [Ni(en)2]^2+ > [Ni(dmg)2] (4) [Fe(CN)6]^3- > [Fe(CN)6]4-

Discussion

573.	(a) What are fertilizers? Explain each type of fertilizer with suitable examples.(b) How do soaps remove dirt from clothes?
Answer» (a) What are fertilizers? Explain each type of fertilizer with suitable examples. (b) How do soaps remove dirt from clothes?

573.

(a) What are fertilizers? Explain each type of fertilizer with suitable examples.(b) How do soaps remove dirt from clothes?

Answer»

(a) What are fertilizers? Explain each type of fertilizer with suitable examples.

(b) How do soaps remove dirt from clothes?

Discussion

574.	What is to titrant and titrat
Answer» What is to titrant and titrat

Discussion

575.	What is mediating particle?
Answer» What is mediating particle?

Discussion

576.	Choose the correct option regarding the statements given below.Statement A: Heating can bring about a change.Statement B: Cooling can bring about a change.
Answer» Choose the correct option regarding the statements given below. Statement A: Heating can bring about a change. Statement B: Cooling can bring about a change.

Discussion

577.	Which of the following statements is correct?
Answer» Which of the following statements is correct?

Discussion

578.	Question 12 (d) State whether the following statement is true or false. If false, correct it. In the process of obtaining wool from fleece, sorting is done after scouring.
Answer» Question 12 (d) State whether the following statement is true or false. If false, correct it. In the process of obtaining wool from fleece, sorting is done after scouring.

578.

Question 12 (d) State whether the following statement is true or false. If false, correct it. In the process of obtaining wool from fleece, sorting is done after scouring.

Answer»

Question 12 (d)

State whether the following statement is true or false. If false, correct it.
In the process of obtaining wool from fleece, sorting is done after scouring.

Discussion

579.	Which type of hardness can be removed by adding washing soda to hard water? Explain your answer.
Answer» Which type of hardness can be removed by adding washing soda to hard water? Explain your answer.

Discussion

580.	If the series limit of Lyman series for Hydrogen atom is equal to the series limit of Balmer series for a hydrogen like atom, then the atomic number of this hydrogen like atom is -
Answer» If the series limit of Lyman series for Hydrogen atom is equal to the series limit of Balmer series for a hydrogen like atom, then the atomic number of this hydrogen like atom is -

Discussion

581.	A mixture (x) in water contains suspended solids, organic impurities, inorganic impurities (a), nutrients (b), disease causing bacteria and other microbes. Give names for (x), (a) and (b)?
Answer» A mixture (x) in water contains suspended solids, organic impurities, inorganic impurities (a), nutrients (b), disease causing bacteria and other microbes. Give names for (x), (a) and (b)?

Discussion

582.	Magnesium oxide is:
Answer» Magnesium oxide is:

Discussion

583.	For the reaction A(g)+3B(g)→2C(g),What will be the ratio of rate of formation of C(g) to rate of consumption of A(g)?
Answer» For the reaction $A (g) + 3 B (g) \to 2 C (g),$ What will be the ratio of rate of formation of $C (g)$ to rate of consumption of $A (g)$ ?

Discussion

584.	What are atoms
Answer» What are atoms

Discussion

585.	Is water in icebergs salty?
Answer» Is water in icebergs salty?

Discussion

586.	The earth receives energy from the sun at the rate of 1400 Wm−2. The force exerted by the solar radiation on the roof of dimensions (16 m×10 m) is nearly equal to-(Assume absorption coefficient of roof is 0.8)
Answer» The earth receives energy from the sun at the rate of $1400 {Wm}^{- 2} .$ The force exerted by the solar radiation on the roof of dimensions $(16 m \times 10 m)$ is nearly equal to- $($ Assume absorption coefficient of roof is $0.8)$

Discussion

587.	State three differences between acids and bases.
Answer» State three differences between acids and bases.

Discussion

588.	Microorganisms feed upon the dead plant and animal tissues and convert them into ______.
Answer» Microorganisms feed upon the dead plant and animal tissues and convert them into ______.

Discussion

589.	Write down the conclusions drawn by E. Rutherford from his alpha-ray scattering experiment.
Answer» Write down the conclusions drawn by E. Rutherford from his alpha-ray scattering experiment.

Discussion

590.	6.3g of O2 in ozonizer forms ozone, The mass of ozone formed is
Answer» 6.3g of O2 in ozonizer forms ozone, The mass of ozone formed is

Discussion

591.	in a first order reaction the concentration of the reactant is decreased from 1.0 M to 0.25 M in 20 min. the rate constant of the reaction would be- (1) 10 min^-1 (2) 6.931 min^-1 (3) 0.6931 mn^-1 (4) 0.06931 min^-1
Answer» in a first order reaction the concentration of the reactant is decreased from 1.0 M to 0.25 M in 20 min. the rate constant of the reaction would be- (1) 10 min^-1 (2) 6.931 min^-1 (3) 0.6931 mn^-1 (4) 0.06931 min^-1

Discussion

592.	Which of the following is a physical change?
Answer» Which of the following is a physical change?

Discussion

593.	Which of the following factors will not result in groundwater depletion?
Answer» Which of the following factors will not result in groundwater depletion?

Discussion

594.	At particular concentration, the half life of the reaction is 100 minutes . When the concentration of the reactant become double half life becomes, 25 minutes , then what will be the order of the reaction?(1) 1 (2) 2 (3) 0 (4) 3
Answer» At particular concentration, the half life of the reaction is 100 minutes . When the concentration of the reactant become double half life becomes, 25 minutes , then what will be the order of the reaction? (1) 1 (2) 2 (3) 0 (4) 3

Discussion

595.	Why liquids do not have a definite shape?
Answer» Why liquids do not have a definite shape?

Discussion

596.	Seawater does not freeze easily when compared to pure water. Why? [2 MARKS]
Answer» Seawater does not freeze easily when compared to pure water. Why? [2 MARKS]

Discussion

597.	Differentiate between linen fabric and jute fabric. [2 MARKS]
Answer» Differentiate between linen fabric and jute fabric. [2 MARKS]

Discussion

598.	FUNCTIONS: Single Correct : Solution set of the equation, arccos(x) - arcsine(x)= arccos(x*root(3)) A. Is a unit set B. Consists of two elements C. Consists of three elements D. Is a void set.
Answer» FUNCTIONS: Single Correct : Solution set of the equation, arccos(x) - arcsine(x)= arccos(x*root(3)) A. Is a unit set B. Consists of two elements C. Consists of three elements D. Is a void set.

Discussion

599.	Why do helium, neon and argon have a zero valency?
Answer» Why do helium, neon and argon have a zero valency?

Discussion

600.	What substance is the medium in the above experiment?
Answer» What substance is the medium in the above experiment?

Discussion

Explore topic-wise InterviewSolutions in .

how much amount of CuSO4.5H2O required for liberation of 2.54 g I2 when titrated with KI An 4.99gm

What are indicators used for? Give some examples of naturally occurring indicators. [3 MARKS]

A student mixed equal volumes of hydrochloric acid and sodium hydroxide solution of same concentrations in a beaker and tested the pH of the resulting mixture with a pH paper. What will be the colour of pH paper in this case ?(1) red (2) yellow(3) green(4) blue

A balanced chemical equation always obeys:

___ allows the solute to dissolve in it and form a solution.

Classify the following examples into physical or chemical change. [1 MARK] 1) Photosynthesis and burning of coal 2) Dissolving sugar in water and melting of wax

Sorter's disease is caused by:

Explain the various steps that take place in water purification systems.

Sketch the field lines of a positively charged plane conductor.

What are the objectives of Chandrayaan-1?

What is physical change? Plz explain me.....

Is gallium also used in thermometers?

Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity ρC,ρT,ρMandρA respectively. Then :

What is the role of each knitting needles?

Mention the changes that are always, desirable, undesirable and periodic.

A block of iron sinks in fluid A but floats in another liquid B, this is because:

Paheli while moving in a forest observed that there was no noise pollution, though lots of heavy vehicles were passing from the nearby highway. Explain.

Distilled water is

Relative humidity is expressed as

Complete the following reaction: HCl(aq)+NaOH(aq)→?

How many atoms are there in a molecule of carbon dioxide?

Which stability order is incorrect- (1) [Fe(C2O4)3]^-3 > [Fe(H2O)6]^3+ (2) [Fe(EDTA)]^2- > [Fe(en)3]3+ (3) [Ni(en)2]^2+ > [Ni(dmg)2] (4) [Fe(CN)6]^3- > [Fe(CN)6]4-

(a) What are fertilizers? Explain each type of fertilizer with suitable examples.(b) How do soaps remove dirt from clothes?

What is to titrant and titrat

What is mediating particle?

Choose the correct option regarding the statements given below.Statement A: Heating can bring about a change.Statement B: Cooling can bring about a change.

Which of the following statements is correct?

Question 12 (d) State whether the following statement is true or false. If false, correct it. In the process of obtaining wool from fleece, sorting is done after scouring.

Which type of hardness can be removed by adding washing soda to hard water? Explain your answer.

If the series limit of Lyman series for Hydrogen atom is equal to the series limit of Balmer series for a hydrogen like atom, then the atomic number of this hydrogen like atom is -

A mixture (x) in water contains suspended solids, organic impurities, inorganic impurities (a), nutrients (b), disease causing bacteria and other microbes. Give names for (x), (a) and (b)?

Magnesium oxide is:

For the reaction A(g)+3B(g)→2C(g),What will be the ratio of rate of formation of C(g) to rate of consumption of A(g)?

What are atoms

Is water in icebergs salty?

The earth receives energy from the sun at the rate of 1400 Wm−2. The force exerted by the solar radiation on the roof of dimensions (16 m×10 m) is nearly equal to-(Assume absorption coefficient of roof is 0.8)

State three differences between acids and bases.

Microorganisms feed upon the dead plant and animal tissues and convert them into ______.

Write down the conclusions drawn by E. Rutherford from his alpha-ray scattering experiment.

6.3g of O2 in ozonizer forms ozone, The mass of ozone formed is

in a first order reaction the concentration of the reactant is decreased from 1.0 M to 0.25 M in 20 min. the rate constant of the reaction would be- (1) 10 min^-1 (2) 6.931 min^-1 (3) 0.6931 mn^-1 (4) 0.06931 min^-1

Which of the following is a physical change?

Which of the following factors will not result in groundwater depletion?

At particular concentration, the half life of the reaction is 100 minutes . When the concentration of the reactant become double half life becomes, 25 minutes , then what will be the order of the reaction?(1) 1 (2) 2 (3) 0 (4) 3

Why liquids do not have a definite shape?

Seawater does not freeze easily when compared to pure water. Why? [2 MARKS]

Differentiate between linen fabric and jute fabric. [2 MARKS]

FUNCTIONS: Single Correct : Solution set of the equation, arccos(x) - arcsine(x)= arccos(x*root(3)) A. Is a unit set B. Consists of two elements C. Consists of three elements D. Is a void set.

Why do helium, neon and argon have a zero valency?

What substance is the medium in the above experiment?