15280 + Interview Questions in Chemistry Page 69 InterviewSolution

3401.	Which of the following sets contains all the salts of same family?
Answer» Which of the following sets contains all the salts of same family?

Discussion

3402.	The energy of nth orbital of hydrogen atom
Answer» The energy of nth orbital of hydrogen atom

Discussion

3403.	Find the mass of 3 g of molecules of HNO3
Answer» Find the mass of 3 g of molecules of HNO3

Discussion

3404.	Explain blast and reverberatoy furnace and their differences
Answer» Explain blast and reverberatoy furnace and their differences

Discussion

3405.	Question 57An organic compound A on heating with concentrated H2SO4 forms a compound B which on an addition of one mole of hydrogen in presence of Ni forms a compound C. One mole of compound C on combustion forms two moles of CO2 and 3 moles of H2O. Identify the compounds A, B and C and write the chemical equations of the reactions involved.
Answer» Question 57 An organic compound A on heating with concentrated $H_{2} {SO}_{4}$ forms a compound B which on an addition of one mole of hydrogen in presence of $Ni$ forms a compound C. One mole of compound C on combustion forms two moles of ${CO}_{2}$ and 3 moles of $H_{2} O$ . Identify the compounds A, B and C and write the chemical equations of the reactions involved.

Discussion

3406.	Here you can see 5 carbon compounds What is the similarity between these compounds?
Answer» Here you can see 5 carbon compounds What is the similarity between these compounds?

3406.

Here you can see 5 carbon compounds What is the similarity between these compounds?

Answer»

Here you can see 5 carbon compounds

What is the similarity between these compounds?

Discussion

3407.	Which of the following is not correct for isomers?
Answer» Which of the following is not correct for isomers?

Discussion

3408.	67 what is balz schiemann reaction?
Answer» 67 what is balz schiemann reaction?

Discussion

3409.	Why did the writer not make a favourable impression on the head teacher?
Answer» Why did the writer not make a favourable impression on the head teacher?

Discussion

3410.	When 100 ml of Strong acid mixed with 100 ml of Strong base, change in temperature is 5^° c. Determine △ T when 10 ml of Strong acid mixed with Strong base.
Answer» When 100 ml of Strong acid mixed with 100 ml of Strong base, change in temperature is 5^° c. Determine △ T when 10 ml of Strong acid mixed with Strong base.

Discussion

3411.	1mole of kclo3 is theemally decomposed and excess of All is burnt in the gasious product how many moles of Al2o3 are formed? and how?
Answer» 1mole of kclo3 is theemally decomposed and excess of All is burnt in the gasious product how many moles of Al2o3 are formed? and how?

Discussion

3412.	Write the polar form of (1+i)
Answer» Write the polar form of (1+i)

Discussion

3413.	Calcium sulphate hemihydrate is known as:
Answer» Calcium sulphate hemihydrate is known as:

Discussion

3414.	A compound contains 3.2 by mass of oxygen Write the minimum molecular weight of the Compound ?
Answer» A compound contains $3.2$ by mass of oxygen Write the minimum molecular weight of the Compound ?

Discussion

3415.	Ionic compounds are soluble in water but insoluble in kerosene because:
Answer» Ionic compounds are soluble in water but insoluble in kerosene because:

Discussion

3416.	Salts of which of the following ion give rise to form coloured solution?
Answer» Salts of which of the following ion give rise to form coloured solution?

Discussion

3417.	Name the products formed and give appropriate chemical equations for the following : (a) Sodium reacting with ethyl alcohol. (b) Ethanol oxidised by acidified potassium dichromate.
Answer» Name the products formed and give appropriate chemical equations for the following : (a) Sodium reacting with ethyl alcohol. (b) Ethanol oxidised by acidified potassium dichromate.

Discussion

3418.	The electronic configuration of an element X is 2,8,6. i. What is the number of valence electron in an atom of X? ii. Is it a metal or a non-metal?
Answer» The electronic configuration of an element X is 2,8,6. i. What is the number of valence electron in an atom of X? ii. Is it a metal or a non-metal?

3418.

The electronic configuration of an element X is 2,8,6. i. What is the number of valence electron in an atom of X? ii. Is it a metal or a non-metal?

Answer»

The electronic configuration of an element X is 2,8,6.

i. What is the number of valence electron in an atom of X?

ii. Is it a metal or a non-metal?

Discussion

3419.	when 22.4 l of H2 is mixed with 11.2 l of Cl2, each at STP, the moles of HCL formed is equal to?
Answer» when 22.4 l of H2 is mixed with 11.2 l of Cl2, each at STP, the moles of HCL formed is equal to?

Discussion

3420.	How many bonds are present in CO32− ion?
Answer» How many bonds are present in ${C O_{3}}^{2 -}$ ion?

Discussion

3421.	12.The rate of a reaction get doubled when temperature increases by 27 to 37 degree celcius. By what factor will it change for the temperature range 17 to 27 degree celcius ??
Answer» 12.The rate of a reaction get doubled when temperature increases by 27 to 37 degree celcius. By what factor will it change for the temperature range 17 to 27 degree celcius ??

Discussion

3422.	How to find magnitude of gravitational force
Answer» How to find magnitude of gravitational force

Discussion

3423.	What is the IUPAC name of the organic compound formed in the following chemical reaction?Acetone(i)C2H5MgBr, dry Ether−−−−−−−−−−−−−−−→(ii)H2O,H+Product
Answer» What is the $I U P A C$ name of the organic compound formed in the following chemical reaction? $Acetone (i) C_{2} H_{5} M g B r, dry Ether - -------------- \to (i i) H_{2} O, H^{+} Product$

Discussion

3424.	Which allotrope of carbon is used in making 'lead' of pencils?
Answer» Which allotrope of carbon is used in making 'lead' of pencils?

3424.

Which allotrope of carbon is used in making 'lead' of pencils?

Answer»

Which allotrope of carbon is used in making 'lead' of pencils?

Discussion

3425.	46. The molar heat capacities for the process shown in figure is 1. C=Cp 2. C=Cv 3. C>Cv 4. C=0
Answer» 46. The molar heat capacities for the process shown in figure is 1. C=Cp 2. C=Cv 3. C>Cv 4. C=0

Discussion

3426.	The molar conductances at infinite dilution for electrolytes BA and CA are 140 and 120 ohm−1cm2mol−1 respectively. If the molar conductance at infinite dilution of BX is 198 ohm−1cm2mol−1, then at infinite dilution, the molar conductance of CX is:
Answer» The molar conductances at infinite dilution for electrolytes $B A$ and $C A$ are $140$ and $120 o h m^{- 1} c m^{2} m o l^{- 1}$ respectively. If the molar conductance at infinite dilution of $B X$ is $198 o h m^{- 1} c m^{2} m o l^{- 1}$ , then at infinite dilution, the molar conductance of $C X$ is:

Discussion

3427.	When the mixture of manganese dioxide and concentrated hydrochloric acid is subjected to heat
Answer» When the mixture of manganese dioxide and concentrated hydrochloric acid is subjected to heat

Discussion

3428.	A colourless liquid sample was tested with pH paper strip. The colour of the strip changed to reddish pink. The sample could be :(1) tap water(2) sodium hydroxide solution(3) distilled water(4) ethanoic acid solution
Answer» A colourless liquid sample was tested with pH paper strip. The colour of the strip changed to reddish pink. The sample could be : (1) tap water (2) sodium hydroxide solution (3) distilled water (4) ethanoic acid solution

Discussion

3429.	why phosphorus have valency 3 and
Answer» why phosphorus have valency 3 and

Discussion

3430.	67 find molarity of mixture of the mixture of 300ml M/10 HCl , 20ml M/20 HCl , and 100ml M/5 HCl of the solution.
Answer» 67 find molarity of mixture of the mixture of 300ml M/10 HCl , 20ml M/20 HCl , and 100ml M/5 HCl of the solution.

Discussion

3431.	Rate constant depend on
Answer» Rate constant depend on

Discussion

3432.	In a simultaneous throw of a pair of dice, find the probability of getting same value on both.
Answer» In a simultaneous throw of a pair of dice, find the probability of getting same value on both.

Discussion

3433.	A gas occupies 150 cm3 at 273 K and 400 mm pressure. Calculate the volume of the gas at STP
Answer» A gas occupies 150 $c m^{3}$ at 273 K and 400 mm pressure. Calculate the volume of the gas at STP

Discussion

3434.	Punctuate the passage given belowWhat exactly is waste waste is anything discarded, rejected, or otherwise released into the environment in a manner that could have an impact on that environment how can we help we can help by practicing the three rs of waste management reduce reuse and recycle it has been estimated that every ton of recycled paper saves 17 trees 7000 gallons of water 4100 kilowatt hour of energy and three cubic yards of landfill space how does reduce and reuse help reducing consumption is decreasing waste whereas the reuse of products such as recyclable plastics prevents the need for excess production of these exact same plastics hence the emission released from factories is lessened recycled products also take less energy to produce
Answer» Punctuate the passage given below What exactly is waste waste is anything discarded, rejected, or otherwise released into the environment in a manner that could have an impact on that environment how can we help we can help by practicing the three rs of waste management reduce reuse and recycle it has been estimated that every ton of recycled paper saves 17 trees 7000 gallons of water 4100 kilowatt hour of energy and three cubic yards of landfill space how does reduce and reuse help reducing consumption is decreasing waste whereas the reuse of products such as recyclable plastics prevents the need for excess production of these exact same plastics hence the emission released from factories is lessened recycled products also take less energy to produce

3434.

Punctuate the passage given belowWhat exactly is waste waste is anything discarded, rejected, or otherwise released into the environment in a manner that could have an impact on that environment how can we help we can help by practicing the three rs of waste management reduce reuse and recycle it has been estimated that every ton of recycled paper saves 17 trees 7000 gallons of water 4100 kilowatt hour of energy and three cubic yards of landfill space how does reduce and reuse help reducing consumption is decreasing waste whereas the reuse of products such as recyclable plastics prevents the need for excess production of these exact same plastics hence the emission released from factories is lessened recycled products also take less energy to produce

Answer»

Punctuate the passage given below

What exactly is waste waste is anything discarded, rejected, or otherwise released into the environment in a manner that could have an impact on that environment how can we help we can help by practicing the three rs of waste management reduce reuse and recycle it has been estimated that every ton of recycled paper saves 17 trees 7000 gallons of water 4100 kilowatt hour of energy and three cubic yards of landfill space how does reduce and reuse help reducing consumption is decreasing waste whereas the reuse of products such as recyclable plastics prevents the need for excess production of these exact same plastics hence the emission released from factories is lessened recycled products also take less energy to produce

Discussion

3435.	30. The number of mole of oxygen in one liter of air containing 21% oxygen by volume, under standard conditions, is
Answer» 30. The number of mole of oxygen in one liter of air containing 21% oxygen by volume, under standard conditions, is

Discussion

3436.	KI in acetone, undergoes Sn1 reaction with each of P, Q, R and S. The rates of the reaction vary as:
Answer» KI in acetone, undergoes $S n_{1}$ reaction with each of P, Q, R and S. The rates of the reaction vary as:

Discussion

3437.	Name two natural ecosystems and two artificial ecosystems.
Answer» Name two natural ecosystems and two artificial ecosystems.

Discussion

3438.	19. how to determine the bond order CO,NO and other heteronuclear species?
Answer» 19. how to determine the bond order CO,NO and other heteronuclear species?

Discussion

3439.	Atomic number of Y=12. Its mass number is 25. How many neutrons are present in the nucleus of Y?
Answer» Atomic number of $Y = 12$ . Its mass number is $25$ . How many neutrons are present in the nucleus of $Y$ ?

Discussion

3440.	Define an alloy and an amalgam.State the main constituents of the following alloys:Stainless steel, Bronze.In which property each of them is different from its main constituents? [5 MARKS]
Answer» Define an alloy and an amalgam. State the main constituents of the following alloys:Stainless steel, Bronze. In which property each of them is different from its main constituents? [5 MARKS]

Discussion

3441.	Explain the structure of an electrolytic cell.
Answer» Explain the structure of an electrolytic cell.

Discussion

3442.	Explain in detail about each: 1) Valence Bond Theory (VBT) 2) Molecular Orbital Theory (MOT)
Answer» Explain in detail about each: 1) Valence Bond Theory (VBT) 2) Molecular Orbital Theory (MOT)

Discussion

3443.	VICWhat is the molecular mass of substance, each molecule of which contains 4 atoms of carbonand 10 atoms of hydrogen?18.Le
Answer» VICWhat is the molecular mass of substance, each molecule of which contains 4 atoms of carbonand 10 atoms of hydrogen?18.Le

Discussion

3444.	order of solubility in aquous medium Na2s ,ZnS ,Cus
Answer» order of solubility in aquous medium Na2s ,ZnS ,Cus

Discussion

3445.	the total charge present in 72g of water?
Answer» the total charge present in 72g of water?

Discussion

3446.	Choose the correct answer:The formation of 1, 2-dibromoethane from ethene and bromine is an example of:(a) Substitution(b) Dehydration(c) Dehydrohalogenation(d) Addition
Answer» Choose the correct answer: The formation of 1, 2-dibromoethane from ethene and bromine is an example of: (a) Substitution (b) Dehydration (c) Dehydrohalogenation (d) Addition

Discussion

3447.	Temporary hardness of water can be removed by (a) filtering (b) boiling (c) loading (d) none of the above
Answer» Temporary hardness of water can be removed by (a) filtering (b) boiling (c) loading (d) none of the above

3447.

Temporary hardness of water can be removed by (a) filtering (b) boiling (c) loading (d) none of the above

Answer»

Temporary hardness of water can be removed by

(a) filtering

(b) boiling

(c) loading

(d) none of the above

Discussion

3448.	Why does an unsaturated hydrocarbon leaves a sooty flame on burning?
Answer» Why does an unsaturated hydrocarbon leaves a sooty flame on burning?

Discussion

3449.	What is the molecular formula of alkane of smallest molecular weight which possesses a chiral center? C7H16 C6H14 C5H12 C8H1
Answer» What is the molecular formula of alkane of smallest molecular weight which possesses a chiral center? C7H16 C6H14 C5H12 C8H1

Discussion

3450.	0.01 mole of naoh is added to 1 litre of buffer solution which contains 0.1 M acetic acid and 0.1 sodium acetate . if pKa value of acetic acid is 4.76 , the ph of the solution is a) 4.76 b) 4.76 d) 7.6
Answer» 0.01 mole of naoh is added to 1 litre of buffer solution which contains 0.1 M acetic acid and 0.1 sodium acetate . if pKa value of acetic acid is 4.76 , the ph of the solution is a) 4.76 b) <4.76 c)>4.76 d) 7.6

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following sets contains all the salts of same family?

The energy of nth orbital of hydrogen atom

Find the mass of 3 g of molecules of HNO3

Explain blast and reverberatoy furnace and their differences

Here you can see 5 carbon compounds What is the similarity between these compounds?

Which of the following is not correct for isomers?

67 what is balz schiemann reaction?

Why did the writer not make a favourable impression on the head teacher?

When 100 ml of Strong acid mixed with 100 ml of Strong base, change in temperature is 5^° c. Determine △ T when 10 ml of Strong acid mixed with Strong base.

1mole of kclo3 is theemally decomposed and excess of All is burnt in the gasious product how many moles of Al2o3 are formed? and how?

Write the polar form of (1+i)

Calcium sulphate hemihydrate is known as:

A compound contains 3.2 by mass of oxygen Write the minimum molecular weight of the Compound ?

Ionic compounds are soluble in water but insoluble in kerosene because:

Salts of which of the following ion give rise to form coloured solution?

Name the products formed and give appropriate chemical equations for the following : (a) Sodium reacting with ethyl alcohol. (b) Ethanol oxidised by acidified potassium dichromate.

The electronic configuration of an element X is 2,8,6. i. What is the number of valence electron in an atom of X? ii. Is it a metal or a non-metal?

when 22.4 l of H2 is mixed with 11.2 l of Cl2, each at STP, the moles of HCL formed is equal to?

How many bonds are present in CO32− ion?

12.The rate of a reaction get doubled when temperature increases by 27 to 37 degree celcius. By what factor will it change for the temperature range 17 to 27 degree celcius ??

How to find magnitude of gravitational force

What is the IUPAC name of the organic compound formed in the following chemical reaction?Acetone(i)C2H5MgBr, dry Ether−−−−−−−−−−−−−−−→(ii)H2O,H+Product

Which allotrope of carbon is used in making 'lead' of pencils?

46. The molar heat capacities for the process shown in figure is 1. C=Cp 2. C=Cv 3. C>Cv 4. C=0

The molar conductances at infinite dilution for electrolytes BA and CA are 140 and 120 ohm−1cm2mol−1 respectively. If the molar conductance at infinite dilution of BX is 198 ohm−1cm2mol−1, then at infinite dilution, the molar conductance of CX is:

When the mixture of manganese dioxide and concentrated hydrochloric acid is subjected to heat

A colourless liquid sample was tested with pH paper strip. The colour of the strip changed to reddish pink. The sample could be :(1) tap water(2) sodium hydroxide solution(3) distilled water(4) ethanoic acid solution

why phosphorus have valency 3 and

67 find molarity of mixture of the mixture of 300ml M/10 HCl , 20ml M/20 HCl , and 100ml M/5 HCl of the solution.

Rate constant depend on

In a simultaneous throw of a pair of dice, find the probability of getting same value on both.

A gas occupies 150 cm3 at 273 K and 400 mm pressure. Calculate the volume of the gas at STP

30. The number of mole of oxygen in one liter of air containing 21% oxygen by volume, under standard conditions, is

KI in acetone, undergoes Sn1 reaction with each of P, Q, R and S. The rates of the reaction vary as:

Name two natural ecosystems and two artificial ecosystems.

19. how to determine the bond order CO,NO and other heteronuclear species?

Atomic number of Y=12. Its mass number is 25. How many neutrons are present in the nucleus of Y?

Define an alloy and an amalgam.State the main constituents of the following alloys:Stainless steel, Bronze.In which property each of them is different from its main constituents? [5 MARKS]

Explain the structure of an electrolytic cell.

Explain in detail about each: 1) Valence Bond Theory (VBT) 2) Molecular Orbital Theory (MOT)

VICWhat is the molecular mass of substance, each molecule of which contains 4 atoms of carbonand 10 atoms of hydrogen?18.Le

order of solubility in aquous medium Na2s ,ZnS ,Cus

the total charge present in 72g of water?

Choose the correct answer:The formation of 1, 2-dibromoethane from ethene and bromine is an example of:(a) Substitution(b) Dehydration(c) Dehydrohalogenation(d) Addition

Temporary hardness of water can be removed by (a) filtering (b) boiling (c) loading (d) none of the above

Why does an unsaturated hydrocarbon leaves a sooty flame on burning?

What is the molecular formula of alkane of smallest molecular weight which possesses a chiral center? C7H16 C6H14 C5H12 C8H1

0.01 mole of naoh is added to 1 litre of buffer solution which contains 0.1 M acetic acid and 0.1 sodium acetate . if pKa value of acetic acid is 4.76 , the ph of the solution is a) 4.76 b) 4.76 d) 7.6