5083 + Interview Questions in Chemistry

1.	Which of the following is not a source of wool?
Answer» Which of the following is not a source of wool?

Discussion

2.	The raw information data is also known as _______ data .
Answer» The raw information data is also known as _______ data .

Discussion

3.	28. Is evaporation and vapourisation are same if not what are their differences What us latent heat of vapourisation and evaporation also latent heat of fusion
Answer» 28. Is evaporation and vapourisation are same if not what are their differences What us latent heat of vapourisation and evaporation also latent heat of fusion

Discussion

4.	Calculate the pH of 0.2 M NaOCl solution.Ka(HOCl)=3.5×10−8
Answer» Calculate the $p H$ of 0.2 M $N a O C l$ solution. $K_{a} (H O C l) = 3.5 \times 10^{- 8}$

Discussion

5.	Calculate the charge on 1.6 g of oxide ion.
Answer» Calculate the charge on 1.6 g of oxide ion.

Discussion

6.	What is milk of magnesia
Answer» What is milk of magnesia

Discussion

7.	Which of the following order is correct for thermalstability?(1) MgCO3 < CaCO3 < BeCO2(2) BeCO3 MgCO3 s CaCO(3) CaCO3 BeCO3 MgCO3(4) CaCO3 MgCO3 BeCO3
Answer» Which of the following order is correct for thermal stability? (1) MgCO3 < CaCO3 < BeCO2 (2) BeCO3 MgCO3 s CaCO (3) CaCO3 BeCO3 MgCO3 (4) CaCO3 MgCO3 BeCO3

Discussion

8.	Soft drink cans as shown below are usually electroplated with tin because :
Answer» Soft drink cans as shown below are usually electroplated with tin because :

Discussion

9.	Which of the following represent a double displacement reaction?
Answer» Which of the following represent a double displacement reaction?

Discussion

10.	Question 3(b) Fill in the blanks in the following statements: The chemical name of baking soda is ___.
Answer» Question 3(b) Fill in the blanks in the following statements: The chemical name of baking soda is ___.

Discussion

11.	_______ is defined as the plants of a particular region, habitat, or geological period.
Answer» _______ is defined as the plants of a particular region, habitat, or geological period.

Discussion

12.	Three statements are provided here which define the terms – (a) sludge (b) sewage and (c) wastewater. Pick out the correct definition for each of these terms. The settled solids that are removed in wastewater treatment with a scraper. Water from kitchen used for washing dishes. Wastewater released from homes, industries, hospitals and other public buildings.
Answer» Three statements are provided here which define the terms – (a) sludge (b) sewage and (c) wastewater. Pick out the correct definition for each of these terms. The settled solids that are removed in wastewater treatment with a scraper. Water from kitchen used for washing dishes. Wastewater released from homes, industries, hospitals and other public buildings.

12.

Three statements are provided here which define the terms – (a) sludge (b) sewage and (c) wastewater. Pick out the correct definition for each of these terms. The settled solids that are removed in wastewater treatment with a scraper. Water from kitchen used for washing dishes. Wastewater released from homes, industries, hospitals and other public buildings.

Answer»

Three statements are provided here which define the terms – (a) sludge (b) sewage and (c) wastewater. Pick out the correct definition for each of these terms.

The settled solids that are removed in wastewater treatment with a scraper.

Water from kitchen used for washing dishes.

Wastewater released from homes, industries, hospitals and other public buildings.

Discussion

13.	The gram molar weight of NH3 is:
Answer» The gram molar weight of $N H_{3}$ is:

Discussion

14.	For a reaction which is of first order, the fraction of reactants remaining after 160 min if its half life is 40 min is
Answer» For a reaction which is of first order, the fraction of reactants remaining after 160 min if its half life is 40 min is

Discussion

15.	Identify the only base which does not have a metal in its molecule.
Answer» Identify the only base which does not have a metal in its molecule.

Discussion

16.	What is an element? How are elements classified?
Answer» What is an element? How are elements classified?

Discussion

17.	What is the difference between natural silk and artificial silk
Answer» What is the difference between natural silk and artificial silk

Discussion

18.	EAN of platinum in zies's salt K[ptcl3(c2h4)]
Answer» EAN of platinum in zies's salt K[ptcl3(c2h4)]

Discussion

19.	is it a correct statement"decomposition is an endothermic process?
Answer» is it a correct statement"decomposition is an endothermic process?

Discussion

20.	Name the metal which is present in galvision iron
Answer» Name the metal which is present in galvision iron

Discussion

21.	An element X forms an ion having a charge of +4 while another element Y forms an ion having a charge of −2. What will be the chemical formula of the compound formed by the combination of X and Y?
Answer» An element X forms an ion having a charge of $+ 4$ while another element Y forms an ion having a charge of $- 2$ . What will be the chemical formula of the compound formed by the combination of X and Y?

Discussion

22.	A lot of feeding is required to the silkworms during which stage?
Answer» A lot of feeding is required to the silkworms during which stage?

Discussion

23.	In a class the teacher was explaining about changes. Suddenly one student asked how changes are helpful to us. Teacher replied: Some changes are desirable but there are many changes which are not desirable. Which of the following is an example of desirable change?
Answer» In a class the teacher was explaining about changes. Suddenly one student asked how changes are helpful to us. Teacher replied: Some changes are desirable but there are many changes which are not desirable. Which of the following is an example of desirable change?

23.

In a class the teacher was explaining about changes. Suddenly one student asked how changes are helpful to us. Teacher replied: Some changes are desirable but there are many changes which are not desirable. Which of the following is an example of desirable change?

Answer»

In a class the teacher was explaining about changes. Suddenly one student asked how changes are helpful to us.

Teacher replied: Some changes are desirable but there are many changes which are not desirable.

Which of the following is an example of desirable change?

Discussion

24.	Explain how forests prevent floods.
Answer» Explain how forests prevent floods.

Discussion

25.	Which of the following changes are irreversible in nature?
Answer» Which of the following changes are irreversible in nature?

Discussion

26.	31. the time required to remove electrolytically one fourth og Ag from 0.2litre of 0.1M AgNo3 solution by a current of 0.1 amp. Is
Answer» 31. the time required to remove electrolytically one fourth og Ag from 0.2litre of 0.1M AgNo3 solution by a current of 0.1 amp. Is

Discussion

27.	How to find the oxidation state of an element?
Answer» How to find the oxidation state of an element?

Discussion

28.	Which of the following represents a decomposition reaction?
Answer» Which of the following represents a decomposition reaction?

Discussion

29.	Carbon compounds form ____________ bonds.
Answer» Carbon compounds form ____________ bonds.

Discussion

30.	The most commonly used indicator in the laboratory is:
Answer» The most commonly used indicator in the laboratory is:

Discussion

31.	Give reason why liquids have one free upper surface only.
Answer» Give reason why liquids have one free upper surface only.

Discussion

32.	The effect of sting of an ant can be neutralized by rubbing with a substance that can neutralize the effect of the sting. Name one such substance. [2 MARKS]
Answer» The effect of sting of an ant can be neutralized by rubbing with a substance that can neutralize the effect of the sting. Name one such substance. [2 MARKS]

Discussion

33.	The rate of formation of NO2 for the reaction:N2O5(g)→2NO2(g)+12O2(g)was found to be 3×10−2 molL−1s−1Then calculate the value of rate of disappearance of N2O5
Answer» The rate of formation of $N O_{2}$ for the reaction: $N_{2} O_{5} (g) \to 2 N O_{2} (g) + \frac{1}{2} O_{2} (g)$ was found to be $3 \times 10^{- 2} m o l L^{- 1} s^{- 1}$ Then calculate the value of rate of disappearance of $N_{2} O_{5}$

33.

The rate of formation of NO2 for the reaction:N2O5(g)→2NO2(g)+12O2(g)was found to be 3×10−2 molL−1s−1Then calculate the value of rate of disappearance of N2O5

Answer»

The rate of formation of $N O_{2}$ for the reaction:

$N_{2} O_{5} (g) \to 2 N O_{2} (g) + \frac{1}{2} O_{2} (g)$

was found to be $3 \times 10^{- 2} m o l L^{- 1} s^{- 1}$

Then calculate the value of rate of disappearance of $N_{2} O_{5}$

Discussion

34.	Aqueous solution of nickel sulphate on treating with pyridine and then adding a solution of sodium nitrate gives dark blue crystals of(a) \lbrack Ni(py)_4\rbrack SO_4 (b) \lbrack Ni(py)_2(NO_2)_2 (c) \lbrack Ni(py)_4\rbrack(NO_2)_2 (d) \lbrack Ni(py)_3 (NO_2)\rbrack_2S0_{
Answer» Aqueous solution of nickel sulphate on treating with pyridine and then adding a solution of sodium nitrate gives dark blue crystals of(a) \lbrack Ni(py)_4\rbrack SO_4 (b) \lbrack Ni(py)_2(NO_2)_2 (c) \lbrack Ni(py)_4\rbrack(NO_2)_2 (d) \lbrack Ni(py)_3 (NO_2)\rbrack_2S0_{

Discussion

35.	When a few pieces of iron are dropped into a blue solution of copper sulphate, its blue colour slowly changes into light green and also a red substance is formed. The blue solution is due to the formation of
Answer» When a few pieces of iron are dropped into a blue solution of copper sulphate, its blue colour slowly changes into light green and also a red substance is formed. The blue solution is due to the formation of

Discussion

36.	What do you mean by aerosol sprays .
Answer» What do you mean by aerosol sprays .

Discussion

37.	Question 9 In a filtration plant, water is filtered using layers of (a) sand and clay (b) clay and fine gravel (c) sand and fine gravel (d) sand, fine gravel and medium gravel
Answer» Question 9 In a filtration plant, water is filtered using layers of (a) sand and clay (b) clay and fine gravel (c) sand and fine gravel (d) sand, fine gravel and medium gravel

37.

Question 9 In a filtration plant, water is filtered using layers of (a) sand and clay (b) clay and fine gravel (c) sand and fine gravel (d) sand, fine gravel and medium gravel

Answer»

Question 9

In a filtration plant, water is filtered using layers of
(a) sand and clay
(b) clay and fine gravel
(c) sand and fine gravel
(d) sand, fine gravel and medium gravel

Discussion

38.	How to check polarity of molecule
Answer» How to check polarity of molecule

Discussion

39.	What is nuclear Fission and fussion?
Answer» What is nuclear Fission and fussion?

Discussion

40.	Number of free electron(s) in each carbon atom in graphite is/are:
Answer» Number of free electron(s) in each carbon atom in graphite is/are:

Discussion

41.	Draw the atomic structures of some elements.
Answer» Draw the atomic structures of some elements.

Discussion

42.	Explain the process and principle of filtration in water purification.
Answer» Explain the process and principle of filtration in water purification.

Discussion

43.	When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?
Answer» When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?

Discussion

44.	State differences between acids and bases. [3 MARKS]
Answer» State differences between acids and bases. [3 MARKS]

Discussion

45.	Identify the source that constitutes majority of the water available on the Earth.
Answer» Identify the source that constitutes majority of the water available on the Earth.

Discussion

46.	What is a chemical change?
Answer» What is a chemical change?

Discussion

47.	Could Rutherford explain the stability of nucleus?
Answer» Could Rutherford explain the stability of nucleus?

Discussion

48.	Why does copper not react with HCl andH2SO4?
Answer» Why does copper not react with $H C l$ and $H_{2} S O_{4}$ ?

Discussion

49.	is bond order and bond multiplicity same term used to tell the no of bonds present between two atoms
Answer» is bond order and bond multiplicity same term used to tell the no of bonds present between two atoms

Discussion

50.	How and why are mineral acids different from organic acid
Answer» How and why are mineral acids different from organic acid

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following is not a source of wool?

The raw information data is also known as _______ data .

28. Is evaporation and vapourisation are same if not what are their differences What us latent heat of vapourisation and evaporation also latent heat of fusion

Calculate the pH of 0.2 M NaOCl solution.Ka(HOCl)=3.5×10−8

Calculate the charge on 1.6 g of oxide ion.

What is milk of magnesia

Which of the following order is correct for thermalstability?(1) MgCO3 < CaCO3 < BeCO2(2) BeCO3 MgCO3 s CaCO(3) CaCO3 BeCO3 MgCO3(4) CaCO3 MgCO3 BeCO3

Soft drink cans as shown below are usually electroplated with tin because :

Which of the following represent a double displacement reaction?

Question 3(b) Fill in the blanks in the following statements: The chemical name of baking soda is ___.

_______ is defined as the plants of a particular region, habitat, or geological period.

The gram molar weight of NH3 is:

For a reaction which is of first order, the fraction of reactants remaining after 160 min if its half life is 40 min is

Identify the only base which does not have a metal in its molecule.

What is an element? How are elements classified?

What is the difference between natural silk and artificial silk

EAN of platinum in zies's salt K[ptcl3(c2h4)]

is it a correct statement"decomposition is an endothermic process?

Name the metal which is present in galvision iron

An element X forms an ion having a charge of +4 while another element Y forms an ion having a charge of −2. What will be the chemical formula of the compound formed by the combination of X and Y?

A lot of feeding is required to the silkworms during which stage?

In a class the teacher was explaining about changes. Suddenly one student asked how changes are helpful to us. Teacher replied: Some changes are desirable but there are many changes which are not desirable. Which of the following is an example of desirable change?

Explain how forests prevent floods.

Which of the following changes are irreversible in nature?

31. the time required to remove electrolytically one fourth og Ag from 0.2litre of 0.1M AgNo3 solution by a current of 0.1 amp. Is

How to find the oxidation state of an element?

Which of the following represents a decomposition reaction?

Carbon compounds form ____________ bonds.

The most commonly used indicator in the laboratory is:

Give reason why liquids have one free upper surface only.

The effect of sting of an ant can be neutralized by rubbing with a substance that can neutralize the effect of the sting. Name one such substance. [2 MARKS]

The rate of formation of NO2 for the reaction:N2O5(g)→2NO2(g)+12O2(g)was found to be 3×10−2 molL−1s−1Then calculate the value of rate of disappearance of N2O5

Aqueous solution of nickel sulphate on treating with pyridine and then adding a solution of sodium nitrate gives dark blue crystals of(a) \lbrack Ni(py)_4\rbrack SO_4 (b) \lbrack Ni(py)_2(NO_2)_2 (c) \lbrack Ni(py)_4\rbrack(NO_2)_2 (d) \lbrack Ni(py)_3 (NO_2)\rbrack_2S0_{

When a few pieces of iron are dropped into a blue solution of copper sulphate, its blue colour slowly changes into light green and also a red substance is formed. The blue solution is due to the formation of

What do you mean by aerosol sprays .

Question 9 In a filtration plant, water is filtered using layers of (a) sand and clay (b) clay and fine gravel (c) sand and fine gravel (d) sand, fine gravel and medium gravel

How to check polarity of molecule

What is nuclear Fission and fussion?

Number of free electron(s) in each carbon atom in graphite is/are:

Draw the atomic structures of some elements.

Explain the process and principle of filtration in water purification.

When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?

State differences between acids and bases. [3 MARKS]

Identify the source that constitutes majority of the water available on the Earth.

What is a chemical change?

Could Rutherford explain the stability of nucleus?

Why does copper not react with HCl andH2SO4?

is bond order and bond multiplicity same term used to tell the no of bonds present between two atoms

How and why are mineral acids different from organic acid