7248 + Interview Questions in Chemistry Page 81 InterviewSolution

4001.	If diamond has the property of both the metals and non-metals then why it is not a metalloid. Why it is only an exception for non-metal
Answer» If diamond has the property of both the metals and non-metals then why it is not a metalloid. Why it is only an exception for non-metal

Discussion

4002.	Which type of glass is used in making lenses for cameras, telescopes and microscopes?
Answer» Which type of glass is used in making lenses for cameras, telescopes and microscopes?

Discussion

4003.	What is rapid combustion? Give an example. [2 MARKS]
Answer» What is rapid combustion? Give an example. [2 MARKS]

Discussion

4004.	Two equal point charges each of 3µC are separated by a certain distance in metres. If they are located at (i+j+k) and (i+3j+3k) , then the electrostatic force between them is
Answer» Two equal point charges each of 3µC are separated by a certain distance in metres. If they are located at (i+j+k) and (i+3j+3k) , then the electrostatic force between them is

Discussion

4005.	Explain Brownian motion in detail. Also explain why does it take place.
Answer» Explain Brownian motion in detail. Also explain why does it take place.

Discussion

4006.	The fossil fuels, coal and petroleum are the examples of _________ natural resources.
Answer» The fossil fuels, coal and petroleum are the examples of _________ natural resources.

Discussion

4007.	49.What volume of decinormal k2cr2o7 solution would be needed to convert 1.19g of tin to stannic chloride in acidic medium?
Answer» 49.What volume of decinormal k2cr2o7 solution would be needed to convert 1.19g of tin to stannic chloride in acidic medium?

Discussion

4008.	Solubility product of AgI at 25°C is 4 × 10–18 mole2/L2. The solubility of AgI in presence of 2 × 10–4 M KI solution at 25°C is approximately equal to : (in mol/L)(1)8 × 10–8(2)2 × 10–16(3)2 × 10–14(4)0.5 × 10–12
Answer» Solubility product of AgI at 25°C is 4 × 10–18 mole2/L2. The solubility of AgI in presence of 2 × 10–4 M KI solution at 25°C is approximately equal to : (in mol/L) (1)8 × 10–8 (2)2 × 10–16 (3)2 × 10–14 (4)0.5 × 10–12

Discussion

4009.	Why rayon is known as artificial silk?
Answer» Why rayon is known as artificial silk?

Discussion

4010.	What will happen in the case of anti elimination if we took strong base? Is it possible that if we took strong bse so the elimination will also be possible from same sided hydrogen?
Answer» What will happen in the case of anti elimination if we took strong base? Is it possible that if we took strong bse so the elimination will also be possible from same sided hydrogen?

Discussion

4011.	Metals are actually very hard. However, there are a few metals which are so soft that they can be easily cut with a knife. Identify such a metal from the given options.
Answer» Metals are actually very hard. However, there are a few metals which are so soft that they can be easily cut with a knife. Identify such a metal from the given options.

Discussion

4012.	A/An__ is the simplest substance and cannot be broken down.
Answer» A/An__ is the simplest substance and cannot be broken down.

Discussion

4013.	Why does the bottle filled with water at 0 °C, bursts when kept in refrigerator?
Answer» Why does the bottle filled with water at 0 °C, bursts when kept in refrigerator?

Discussion

4014.	Give an example of decomposition reaction where energy is supplied in form of light.
Answer» Give an example of decomposition reaction where energy is supplied in form of light.

Discussion

4015.	35.Among following the coloured compound is and how A )CuCl B )K3[Cu(CN)4] C) CuF2 D) [Cu(CH3CN)4]BF4
Answer» 35.Among following the coloured compound is and how A )CuCl B )K3[Cu(CN)4] C) CuF2 D) [Cu(CH3CN)4]BF4

Discussion

4016.	Both liquids and gases have indefinite shape. Identify few differences between the two along with examples.
Answer» Both liquids and gases have indefinite shape. Identify few differences between the two along with examples.

Discussion

4017.	a gas is filled in a vessel at 7 degree celsius . if x fraction part escapes out at 27 degree celsius . find x
Answer» a gas is filled in a vessel at 7 degree celsius . if x fraction part escapes out at 27 degree celsius . find x

Discussion

4018.	Formation of manure from leaves is a:-
Answer» Formation of manure from leaves is a:-

Discussion

4019.	What is Deforestation? What are the Causes of Deforestation?
Answer» What is Deforestation? What are the Causes of Deforestation?

Discussion

4020.	0.2 g sample of H2O2 required 10 ml of 1N KMnO4 for complete reaction in acidic medium. Purity of H2O2 is 1) 30 % 2) 60 % 3) 85 % 4) 90 %
Answer» 0.2 g sample of H2O2 required 10 ml of 1N KMnO4 for complete reaction in acidic medium. Purity of H2O2 is 1) 30 % 2) 60 % 3) 85 % 4) 90 %

Discussion

4021.	200 g of a sample of limestone liberates 66 g of CO2 on heating. The percentage purity of CaCO3 in the limestone is Options:a- 95% b- 85% c- 90% d- 75%
Answer» 200 g of a sample of limestone liberates 66 g of CO2 on heating. The percentage purity of CaCO3 in the limestone is Options:a- 95% b- 85% c- 90% d- 75%

Discussion

4022.	Which law governs the relationship between solubility of a gas in a liquid and the pressure exerted by the gas on the surface?
Answer» Which law governs the relationship between solubility of a gas in a liquid and the pressure exerted by the gas on the surface?

Discussion

4023.	Ammonia is a lewis base.It forms complexes with cations.Which one of the following cations does not form complex with ammonia and why?(a)Ag^+(b)Cu^{2+}(c)Cd^{2+}(d)Pb^2
Answer» Ammonia is a lewis base.It forms complexes with cations.Which one of the following cations does not form complex with ammonia and why?(a)Ag^+(b)Cu^{2+}(c)Cd^{2+}(d)Pb^2

Discussion

4024.	If beam of electrons is moving directly towards observer facing east, where magnetic field acts from south to north, then electrons will deflect towards
Answer» If beam of electrons is moving directly towards observer facing east, where magnetic field acts from south to north, then electrons will deflect towards

Discussion

4025.	The overall atmosphere in the shop was
Answer» The overall atmosphere in the shop was

Discussion

4026.	Choose the substance that is non-biodegradable in nature.
Answer» Choose the substance that is non-biodegradable in nature.

Discussion

4027.	In the formula, 2n2 for finding the maximum number of electrons in an orbit, n represents ____.
Answer» In the formula, $2 n^{2}$ for finding the maximum number of electrons in an orbit, n represents ____.

Discussion

4028.	Which pair of metals do not react with water?
Answer» Which pair of metals do not react with water?

Discussion

4029.	Q) which of the following is a bronsted acid but not a bronsted base? a)H2S b)H2O c)HCO3- d)NH
Answer» Q) which of the following is a bronsted acid but not a bronsted base? a)H2S b)H2O c)HCO3- d)NH

Discussion

4030.	Which of the following is the constituent of soda-lime glass?
Answer» Which of the following is the constituent of soda-lime glass?

Discussion

4031.	A precipitate formed in a reaction is shown by which arrow key ?
Answer» A precipitate formed in a reaction is shown by which arrow key ?

Discussion

4032.	Aluminium is used to make overhead electrical wires.give reason
Answer» Aluminium is used to make overhead electrical wires.give reason

Discussion

4033.	A container is filled with fluid upto height H .find the time in which contauner becomes :1)half 2)empty
Answer» A container is filled with fluid upto height H .find the time in which contauner becomes : 1)half 2)empty

Discussion

4034.	What is redid reaction?Give an example,why is the melting point of ice formed from tap water is below 0 degree celcius?
Answer» What is redid reaction?Give an example,why is the melting point of ice formed from tap water is below 0 degree celcius?

Discussion

4035.	The hardness of solids is due to the fact that their particles:
Answer» The hardness of solids is due to the fact that their particles:

Discussion

4036.	Fill in the blanks in the following statements:(a) When carbon dioxide is passed through lime water, it turns milky due to the formation of (b) The chemical name of baking soda is(c) Two methods by which rusting of iron can be prevented are and (d) Changes in which onlyproperties of a substance change are called physical changes.(e) Changes in which new substances are formed are called changes.
Answer» Fill in the blanks in the following statements: (a) When carbon dioxide is passed through lime water, it turns milky due to the formation of (b) The chemical name of baking soda is (c) Two methods by which rusting of iron can be prevented are and (d) Changes in which onlyproperties of a substance change are called physical changes. (e) Changes in which new substances are formed are called changes.

Discussion

4037.	The number of moles of oxygen in one litre of air containing 21% oxygen by volume , under standard condition is a)0.0093 moleb)2.10 molec)0.186 moled)0.21 mole
Answer» The number of moles of oxygen in one litre of air containing 21% oxygen by volume , under standard condition is a)0.0093 mole b)2.10 mole c)0.186 mole d)0.21 mole

Discussion

4038.	a. What is CNG? b. What are the uses of CNG?
Answer» a. What is CNG? b. What are the uses of CNG?

4038.

a. What is CNG? b. What are the uses of CNG?

Answer»

a. What is CNG?

b. What are the uses of CNG?

Discussion

4039.	In hydrogen atom, energy of first excited state is –3.4 eV. Then find out K.E. of same orbit of hydrogen atom.
Answer» In hydrogen atom, energy of first excited state is $- 3.4 eV$ . Then find out K.E. of same orbit of hydrogen atom.

Discussion

4040.	35. 2NOBr=2NO+Br2 Nitrosyl bromide NOBr is 40%dissociated at a certain temperature and total pressure of 0.30 atm. Kp for the reaction 2No+Br2=2NOBr is 1)45 2)25 3)0.022 4)0.25
Answer» 35. 2NOBr=2NO+Br2 Nitrosyl bromide NOBr is 40%dissociated at a certain temperature and total pressure of 0.30 atm. Kp for the reaction 2No+Br2=2NOBr is 1)45 2)25 3)0.022 4)0.25

Discussion

4041.	Define mixture. What are the types of mixtures and explain with one example?
Answer» Define mixture. What are the types of mixtures and explain with one example?

Discussion

4042.

How do you feel — Draw and say • When you get a new dress? happy • When you get hurt? sad • When you share your things? _ • When you are ill? _ Disclaimer: Kindly refer the textbook for the images.

Answer»

How do you feel —	Draw and say
• When you get a new dress?	happy
• When you get hurt?	sad
• When you share your things?	___________
• When you are ill?	___________

Disclaimer: Kindly refer the textbook for the images.

Discussion

4043.	What is NOT a characteristic of a mixture?
Answer» What is NOT a characteristic of a mixture?

Discussion

4044.	What are the different forms of matter? Explain with examples.
Answer» What are the different forms of matter? Explain with examples.

Discussion

4045.	According to the Lewis symbols, the nucleus as well as the electrons in the inner shell of an element is represented by:
Answer» According to the Lewis symbols, the nucleus as well as the electrons in the inner shell of an element is represented by:

Discussion

4046.	Find out the solubility of Ni(OH)2 in 0.1 M NaOH. Given that the ionic product of Ni(OH)2 is 2×10–15 .
Answer» Find out the solubility of $N i (O H)_{2}$ in 0.1 M NaOH. Given that the ionic product of $N i (O H)_{2}$ is 2×10 $^{- 15}$ .

Discussion

4047.	What is 'g' in time period formula??
Answer» What is 'g' in time period formula??

Discussion

4048.	50 ml decinormal hcl when mixed with50 ml decinormal h2so4 the normality of h+ ion in the solution is0.1 n
Answer» 50 ml decinormal hcl when mixed with50 ml decinormal h2so4 the normality of h+ ion in the solution is0.1 n

Discussion

4049.	which of the following is similar to graphite 1)B3C 2)diborane 3)B
Answer» which of the following is similar to graphite 1)B3C 2)diborane 3)B

Discussion

4050.	A skydiver does 300 J of work in 20 seconds. How much power does he spend?
Answer» A skydiver does 300 J of work in 20 seconds. How much power does he spend?

Discussion

Explore topic-wise InterviewSolutions in .

If diamond has the property of both the metals and non-metals then why it is not a metalloid. Why it is only an exception for non-metal

Which type of glass is used in making lenses for cameras, telescopes and microscopes?

What is rapid combustion? Give an example. [2 MARKS]

Two equal point charges each of 3µC are separated by a certain distance in metres. If they are located at (i+j+k) and (i+3j+3k) , then the electrostatic force between them is

Explain Brownian motion in detail. Also explain why does it take place.

The fossil fuels, coal and petroleum are the examples of _________ natural resources.

49.What volume of decinormal k2cr2o7 solution would be needed to convert 1.19g of tin to stannic chloride in acidic medium?

Solubility product of AgI at 25°C is 4 × 10–18 mole2/L2. The solubility of AgI in presence of 2 × 10–4 M KI solution at 25°C is approximately equal to : (in mol/L)(1)8 × 10–8(2)2 × 10–16(3)2 × 10–14(4)0.5 × 10–12

Why rayon is known as artificial silk?

What will happen in the case of anti elimination if we took strong base? Is it possible that if we took strong bse so the elimination will also be possible from same sided hydrogen?

Metals are actually very hard. However, there are a few metals which are so soft that they can be easily cut with a knife. Identify such a metal from the given options.

A/An__ is the simplest substance and cannot be broken down.

Why does the bottle filled with water at 0 °C, bursts when kept in refrigerator?

Give an example of decomposition reaction where energy is supplied in form of light.

35.Among following the coloured compound is and how A )CuCl B )K3[Cu(CN)4] C) CuF2 D) [Cu(CH3CN)4]BF4

Both liquids and gases have indefinite shape. Identify few differences between the two along with examples.

a gas is filled in a vessel at 7 degree celsius . if x fraction part escapes out at 27 degree celsius . find x

Formation of manure from leaves is a:-

What is Deforestation? What are the Causes of Deforestation?

0.2 g sample of H2O2 required 10 ml of 1N KMnO4 for complete reaction in acidic medium. Purity of H2O2 is 1) 30 % 2) 60 % 3) 85 % 4) 90 %

200 g of a sample of limestone liberates 66 g of CO2 on heating. The percentage purity of CaCO3 in the limestone is Options:a- 95% b- 85% c- 90% d- 75%

Which law governs the relationship between solubility of a gas in a liquid and the pressure exerted by the gas on the surface?

Ammonia is a lewis base.It forms complexes with cations.Which one of the following cations does not form complex with ammonia and why?(a)Ag^+(b)Cu^{2+}(c)Cd^{2+}(d)Pb^2

If beam of electrons is moving directly towards observer facing east, where magnetic field acts from south to north, then electrons will deflect towards

The overall atmosphere in the shop was

Choose the substance that is non-biodegradable in nature.

In the formula, 2n2 for finding the maximum number of electrons in an orbit, n represents ____.

Which pair of metals do not react with water?

Q) which of the following is a bronsted acid but not a bronsted base? a)H2S b)H2O c)HCO3- d)NH

Which of the following is the constituent of soda-lime glass?

A precipitate formed in a reaction is shown by which arrow key ?

Aluminium is used to make overhead electrical wires.give reason

A container is filled with fluid upto height H .find the time in which contauner becomes :1)half 2)empty

What is redid reaction?Give an example,why is the melting point of ice formed from tap water is below 0 degree celcius?

The hardness of solids is due to the fact that their particles:

The number of moles of oxygen in one litre of air containing 21% oxygen by volume , under standard condition is a)0.0093 moleb)2.10 molec)0.186 moled)0.21 mole

a. What is CNG? b. What are the uses of CNG?

In hydrogen atom, energy of first excited state is –3.4 eV. Then find out K.E. of same orbit of hydrogen atom.

35. 2NOBr=2NO+Br2 Nitrosyl bromide NOBr is 40%dissociated at a certain temperature and total pressure of 0.30 atm. Kp for the reaction 2No+Br2=2NOBr is 1)45 2)25 3)0.022 4)0.25

Define mixture. What are the types of mixtures and explain with one example?

How do you feel — Draw and say • When you get a new dress? happy • When you get hurt? sad • When you share your things? ___________ • When you are ill? ___________ Disclaimer: Kindly refer the textbook for the images.

What is NOT a characteristic of a mixture?

What are the different forms of matter? Explain with examples.

According to the Lewis symbols, the nucleus as well as the electrons in the inner shell of an element is represented by:

Find out the solubility of Ni(OH)2 in 0.1 M NaOH. Given that the ionic product of Ni(OH)2 is 2×10–15 .

What is 'g' in time period formula??

50 ml decinormal hcl when mixed with50 ml decinormal h2so4 the normality of h+ ion in the solution is0.1 n

which of the following is similar to graphite 1)B3C 2)diborane 3)B

A skydiver does 300 J of work in 20 seconds. How much power does he spend?

How do you feel — Draw and say • When you get a new dress? happy • When you get hurt? sad • When you share your things? _ • When you are ill? _ Disclaimer: Kindly refer the textbook for the images.