46295 + Interview Questions in Chemistry

1.	5.6 dm³ of gas at STP requires 52.20 joule of heat to rise its temperature by 10 degree Celsius at constant volume gas can be
Answer» 5.6 dm³ of gas at STP requires 52.20 joule of heat to rise its temperature by 10 degree Celsius at constant volume gas can be

Discussion

2.	What is unit of specific conductivity give its symbol and full unit name
Answer» What is unit of specific conductivity give its symbol and full unit name

Discussion

3.	56 g of iron reacts with dilute H2SO4 at 30 oC. Work done (in cal) in: (I) a closed vessel of fixed volume (II) an open vessel is: (given molar mass of Fe is 56 g/mol)
Answer» $56 g$ of iron reacts with dilute $H_{2} S O_{4}$ at $30^{o} C$ . Work done (in cal) in: $(I)$ a closed vessel of fixed volume $(I I)$ an open vessel is: (given molar mass of $F e$ is $56 g/mol$ )

Discussion

4.	24. As the number of -OH groups increases in hypophosphorous acid,phosphorous acid,and phosphoric acid ,acid strength will be a)increases b)decreases c)remain nearly same d)remain appropriately same
Answer» 24. As the number of -OH groups increases in hypophosphorous acid,phosphorous acid,and phosphoric acid ,acid strength will be a)increases b)decreases c)remain nearly same d)remain appropriately same

Discussion

5.	what is d2o and h2o?
Answer» what is d2o and h2o?

Discussion

6.	What is the maximum capacity of a shell of quantum number n?
Answer» What is the maximum capacity of a shell of quantum number n?

Discussion

7.	Assertion:both 106g of Na2co2 and 12g of carbon contain the same number of carbon atoms reason :both represent one gram atom of carbon abd contain avagadro atoms of carbons
Answer» Assertion:both 106g of Na2co2 and 12g of carbon contain the same number of carbon atoms reason :both represent one gram atom of carbon abd contain avagadro atoms of carbons

Discussion

8.	Reactionbetween N2and O2takes place as follows:Ifa mixture of 0.482 mol of N2and 0.933 mol of O2is placed in a 10 L reaction vessel and allowed to form N2Oat a temperature for which Kc= 2.0 × 10–37,determine the composition of equilibrium mixture.
Answer» Reaction between N₂ and O₂ takes place as follows: If a mixture of 0.482 mol of N₂ and 0.933 mol of O₂ is placed in a 10 L reaction vessel and allowed to form N₂O at a temperature for which K_c = 2.0 × 10^–37, determine the composition of equilibrium mixture.

8.

Reactionbetween N2and O2takes place as follows:Ifa mixture of 0.482 mol of N2and 0.933 mol of O2is placed in a 10 L reaction vessel and allowed to form N2Oat a temperature for which Kc= 2.0 × 10–37,determine the composition of equilibrium mixture.

Answer»

Reaction
between N₂
and O₂
takes place as follows:

If
a mixture of 0.482 mol of N₂
and 0.933 mol of O₂
is placed in a 10 L reaction vessel and allowed to form N₂O
at a temperature for which K_c
= 2.0 × 10^–37,
determine the composition of equilibrium mixture.

Discussion

9.	The uncertainty in the position of an object weighing 40 g is ±10−3 m. Calculate the uncertainty in its velocity.
Answer» The uncertainty in the position of an object weighing 40 g is $\pm 10^{- 3} m$ . Calculate the uncertainty in its velocity.

Discussion

10.	What are the possibls isomers for C_4H_8?
Answer» What are the possibls isomers for C_4H_8?

Discussion

11.	double bond equivalent of cubane i
Answer» double bond equivalent of cubane i

Discussion

12.	An element A crystallises in fcc structure.200g of this element has 4.12×10^2 atoms.the density of A is 7.2g/cm^3.Calculate the edge lenght of the unit cell.eq
Answer» An element A crystallises in fcc structure.200g of this element has 4.12×10^2 atoms.the density of A is 7.2g/cm^3.Calculate the edge lenght of the unit cell.eq

Discussion

13.	a mixture of 250g of water and 200g of ice at 0deg celcius is kept in a calorimeter (w=50g) if 200g of steam at 100 deg celcius is passed through the mixture then calculate the final temp and the mass of the contents of calorimeter. please answer in detail and in simple language.
Answer» a mixture of 250g of water and 200g of ice at 0deg celcius is kept in a calorimeter (w=50g) if 200g of steam at 100 deg celcius is passed through the mixture then calculate the final temp and the mass of the contents of calorimeter. please answer in detail and in simple language.

Discussion

14.	3. How oxidation state or number is helpful? If it is helpful, then in what?
Answer» 3. How oxidation state or number is helpful? If it is helpful, then in what?

Discussion

15.	A tertiary butyl free radical is more stable than a secondary butyl free radical because of which of the following?
Answer» A tertiary butyl free radical is more stable than a secondary butyl free radical because of which of the following?

Discussion

16.	What is the melting point of iron and aluminium? How is iron melted?
Answer» What is the melting point of iron and aluminium? How is iron melted?

Discussion

17.	The velocity of an electron in the second orbit of sodium atom (atomic no.=11), is v. The velocity of an electron in the fifth orbit of sodium atom will be,
Answer» The velocity of an electron in the second orbit of sodium atom $(atomic no. = 11)$ , is $v$ . The velocity of an electron in the fifth orbit of sodium atom will be,

Discussion

18.	Which of the following expression(s) is/are correct at equilibrium condition of Daniell cell at 25∘C ?For Daniel cell, E0cell=1.1 V
Answer» Which of the following expression(s) is/are correct at equilibrium condition of Daniell cell at $25^{\circ} C ?$ For Daniel cell, $E_{c e l l}^{0} = 1.1 V$

Discussion

19.	46 Sum of number of protons ,electron,and Neutron in12 g ofC is
Answer» 46 Sum of number of protons ,electron,and Neutron in12 g ofC is

Discussion

20.	What is a symbol? What information does it convey?
Answer» What is a symbol? What information does it convey?

Discussion

21.	Which of the following compounds is least stable?
Answer» Which of the following compounds is least stable?

Discussion

22.	The number of lone pairs of electrons on the central I-atom in I−3 is
Answer» The number of lone pairs of electrons on the central I-atom in $I_{3}^{-}$ is

Discussion

23.	Where the centre of mass of Obtuse triangular lamina lies ? Explain with diagram .
Answer» Where the centre of mass of Obtuse triangular lamina lies ? Explain with diagram .

Discussion

24.	Vapour density=Density of gas at STP/Density of hydrogen gas at STP. Here what is STP??
Answer» Vapour density=Density of gas at STP/Density of hydrogen gas at STP. Here what is STP??

Discussion

25.	Question 36 Components of a binary mixture of two liquids A and B were being separated by distillation. After some time separation of components stopped and composition of vapour phase became same as that of liquid phase. Both the components started coming in the distiliate. Explain why this happened?
Answer» Question 36 Components of a binary mixture of two liquids A and B were being separated by distillation. After some time separation of components stopped and composition of vapour phase became same as that of liquid phase. Both the components started coming in the distiliate. Explain why this happened?

Discussion

26.	for N2 +3H2 =2NH3 △ H=-93.6KJ/MOLE. THE CONCENTRATION OF H2 AT EQUILIBRIUM INCREASES IF forN2+3H2=2NH3\bigtriangleup H=-93.6KJ/MOLE.THECONCENTRATIONOFH2ATEQUILIBRIUMINCREASESIF a\} Tempreture descreases. b\} N2 is added at cons†an t volume c\} NH3 is removed d\} volume of system descreased
Answer» for N2 +3H2 =2NH3 △ H=-93.6KJ/MOLE. THE CONCENTRATION OF H2 AT EQUILIBRIUM INCREASES IF forN2+3H2=2NH3\bigtriangleup H=-93.6KJ/MOLE.THECONCENTRATIONOFH2ATEQUILIBRIUMINCREASESIF a\} Tempreture descreases. b\} N2 is added at cons†an t volume c\} NH3 is removed d\} volume of system descreased

Discussion

27.	Calculate the ratio of HCOO− and F− in a mixture of 0.2 M HCOOH(Ka=2×10−4) and 0.1M HF(Ka=6.6×10−4)
Answer» Calculate the ratio of $H C O O^{-}$ and $F^{-}$ in a mixture of $0.2 M H C O O H (K_{a} = 2 \times 10^{- 4})$ and $0.1 M H F (K_{a} = 6.6 \times 10^{- 4})$

Discussion

28.	8 Assertion: P nitrochlorobenzene is more reactive then benzyl chloride for SN1 mechanism reason: it is a nucleophilic substitution reaction
Answer» 8 Assertion: P nitrochlorobenzene is more reactive then benzyl chloride for SN1 mechanism reason: it is a nucleophilic substitution reaction

Discussion

29.	Which chapter we have to do first Atomic structure or Mole concept?
Answer» Which chapter we have to do first Atomic structure or Mole concept?

Discussion

30.	How to draw the structure for compounds?
Answer» How to draw the structure for compounds?

Discussion

31.	When P reacts with caustic soda, the products are PH3 and NaH2PO2. This reaction is an example of
Answer» When P reacts with caustic soda, the products are $P H_{3}$ and $N a H_{2} P O_{2}$ . This reaction is an example of

Discussion

32.	91.Find EQUIVALENT CAPACITANCE BETWEEN POINTS A and B
Answer» 91.Find EQUIVALENT CAPACITANCE BETWEEN POINTS A and B

Discussion

33.	Triethyl aluminium and titanium tetrachloride used in plastic industry is a
Answer» Triethyl aluminium and titanium tetrachloride used in plastic industry is a

Discussion

34.	The molar solubilities of helium, nitrogen, and oxygen are plotted against the partial pressure of the gases at a constant temperature.Henry’s law constant for these gases will lie in the following sequence:
Answer» The molar solubilities of helium, nitrogen, and oxygen are plotted against the partial pressure of the gases at a constant temperature. Henry’s law constant for these gases will lie in the following sequence:

Discussion

35.	Predict the product for the given reaction.
Answer» Predict the product for the given reaction.

Discussion

36.	Whipped cream is a:
Answer» Whipped cream is a:

Discussion

37.	What is the ph of resukting solution when equal volume of 0.01 h2so4 and 0.1m hcl qre mixed
Answer» What is the ph of resukting solution when equal volume of 0.01 h2so4 and 0.1m hcl qre mixed

Discussion

38.	29.How to make 500ml glucose solution with concentration 1 micromole per ml
Answer» 29.How to make 500ml glucose solution with concentration 1 micromole per ml

Discussion

39.	CH3COC2H5-^{naoh/I2}-->X(yellow ppt.) -^{Ag}-->Y(g)
Answer» CH3COC2H5-^{naoh/I2}-->X(yellow ppt.) -^{Ag}-->Y(g)

Discussion

40.	Find the number of words that can be formed by selecting 5 letters of the word INDEPENDENT
Answer» Find the number of words that can be formed by selecting 5 letters of the word INDEPENDENT

Discussion

41.	why is hydrogen peroxide stored in wax lined bottles?refer exemplar problem
Answer» why is hydrogen peroxide stored in wax lined bottles? refer exemplar problem

Discussion

42.	For the reaction, A(s)+3B(g)→4C(s)+D(l).ΔH and ΔU are related as ?
Answer» For the reaction, $A_{(s)} + 3 B_{(g)} \to 4 C_{(s)} + D_{(l)} . Δ H and Δ U$ are related as ?

Discussion

43.	Adsorption of a gas follows the Freundlich adsorption isotherm. 'x' is the mass of the gas adsorbed on mass 'm' of the adsorbent. The plot of log xm versus log p is shown in the graph given below, xm is proportional to:
Answer» Adsorption of a gas follows the Freundlich adsorption isotherm. 'x' is the mass of the gas adsorbed on mass 'm' of the adsorbent. The plot of $l o g \frac{x}{m}$ versus $l o g p$ is shown in the graph given below, $\frac{x}{m}$ is proportional to:

Discussion

44.	7 A specimen of air at 298K and 750mmofHg saturated with benzene at 298K and 100mmofHg if the 1/3 volume of initial volume compress isothermally so found the final pressure of the system 1)2250torr 2)2150torr 3)2050torr 4)1950torr
Answer» 7 A specimen of air at 298K and 750mmofHg saturated with benzene at 298K and 100mmofHg if the 1/3 volume of initial volume compress isothermally so found the final pressure of the system 1)2250torr 2)2150torr 3)2050torr 4)1950torr

Discussion

45.	तीन-चार वाक्यों में अनुकूल प्रसंग तैयार कर नीचे दिए गए वाक्यों का इस्तेमाल करें।(क) पंचहजारी अंदाज से सिर हिलाया।(ख) आँखों के कंचे हम पर फेर दिए।(ग) आ बैठे उन्हीं के ठीये पर।
Answer» तीन-चार वाक्यों में अनुकूल प्रसंग तैयार कर नीचे दिए गए वाक्यों का इस्तेमाल करें। (क) पंचहजारी अंदाज से सिर हिलाया। (ख) आँखों के कंचे हम पर फेर दिए। (ग) आ बैठे उन्हीं के ठीये पर।

Discussion

46.	Consider a tube that has a frilled disk sealed in its centre so that gases can effuse through it in both directions. If the left hand side contains H2 at a pressure P and temperature T and the right hand side contains He at a pressure 2P and temperature T, then initial ratio of rate of effusion is:
Answer» Consider a tube that has a frilled disk sealed in its centre so that gases can effuse through it in both directions. If the left hand side contains $H_{2}$ at a pressure $P$ and temperature $T$ and the right hand side contains $H e$ at a pressure $2 P$ and temperature $T$ , then initial ratio of rate of effusion is:

Discussion

47.	The physical property that is not affected by hydrogen bonding is:
Answer» The physical property that is not affected by hydrogen bonding is:

Discussion

48.	If x , A ,B , y are in AP , then find B/A.
Answer» If x , A ,B , y are in AP , then find B/A.

Discussion

49.	Which of the following compound of Xenon has pyramidal geometry?
Answer» Which of the following compound of Xenon has pyramidal geometry?

Discussion

50.	What will be the oxidation number of I in the KI3 ?
Answer» What will be the oxidation number of $I$ in the $K I_{3}$ ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

5.6 dm³ of gas at STP requires 52.20 joule of heat to rise its temperature by 10 degree Celsius at constant volume gas can be

What is unit of specific conductivity give its symbol and full unit name

56 g of iron reacts with dilute H2SO4 at 30 oC. Work done (in cal) in: (I) a closed vessel of fixed volume (II) an open vessel is: (given molar mass of Fe is 56 g/mol)

24. As the number of -OH groups increases in hypophosphorous acid,phosphorous acid,and phosphoric acid ,acid strength will be a)increases b)decreases c)remain nearly same d)remain appropriately same

what is d2o and h2o?

What is the maximum capacity of a shell of quantum number n?

Assertion:both 106g of Na2co2 and 12g of carbon contain the same number of carbon atoms reason :both represent one gram atom of carbon abd contain avagadro atoms of carbons

Reactionbetween N2and O2takes place as follows:Ifa mixture of 0.482 mol of N2and 0.933 mol of O2is placed in a 10 L reaction vessel and allowed to form N2Oat a temperature for which Kc= 2.0 × 10–37,determine the composition of equilibrium mixture.

The uncertainty in the position of an object weighing 40 g is ±10−3 m. Calculate the uncertainty in its velocity.

What are the possibls isomers for C_4H_8?

double bond equivalent of cubane i

An element A crystallises in fcc structure.200g of this element has 4.12×10^2 atoms.the density of A is 7.2g/cm^3.Calculate the edge lenght of the unit cell.eq

a mixture of 250g of water and 200g of ice at 0deg celcius is kept in a calorimeter (w=50g) if 200g of steam at 100 deg celcius is passed through the mixture then calculate the final temp and the mass of the contents of calorimeter. please answer in detail and in simple language.

3. How oxidation state or number is helpful? If it is helpful, then in what?

A tertiary butyl free radical is more stable than a secondary butyl free radical because of which of the following?

What is the melting point of iron and aluminium? How is iron melted?

The velocity of an electron in the second orbit of sodium atom (atomic no.=11), is v. The velocity of an electron in the fifth orbit of sodium atom will be,

Which of the following expression(s) is/are correct at equilibrium condition of Daniell cell at 25∘C ?For Daniel cell, E0cell=1.1 V

46 Sum of number of protons ,electron,and Neutron in12 g ofC is

What is a symbol? What information does it convey?

Which of the following compounds is least stable?

The number of lone pairs of electrons on the central I-atom in I−3 is

Where the centre of mass of Obtuse triangular lamina lies ? Explain with diagram .

Vapour density=Density of gas at STP/Density of hydrogen gas at STP. Here what is STP??

for N2 +3H2 =2NH3 △ H=-93.6KJ/MOLE. THE CONCENTRATION OF H2 AT EQUILIBRIUM INCREASES IF forN2+3H2=2NH3\bigtriangleup H=-93.6KJ/MOLE.THECONCENTRATIONOFH2ATEQUILIBRIUMINCREASESIF a\} Tempreture descreases. b\} N2 is added at cons†an t volume c\} NH3 is removed d\} volume of system descreased

Calculate the ratio of HCOO− and F− in a mixture of 0.2 M HCOOH(Ka=2×10−4) and 0.1M HF(Ka=6.6×10−4)

8 Assertion: P nitrochlorobenzene is more reactive then benzyl chloride for SN1 mechanism reason: it is a nucleophilic substitution reaction

Which chapter we have to do first Atomic structure or Mole concept?

How to draw the structure for compounds?

When P reacts with caustic soda, the products are PH3 and NaH2PO2. This reaction is an example of

91.Find EQUIVALENT CAPACITANCE BETWEEN POINTS A and B

Triethyl aluminium and titanium tetrachloride used in plastic industry is a

The molar solubilities of helium, nitrogen, and oxygen are plotted against the partial pressure of the gases at a constant temperature.Henry’s law constant for these gases will lie in the following sequence:

Predict the product for the given reaction.

Whipped cream is a:

What is the ph of resukting solution when equal volume of 0.01 h2so4 and 0.1m hcl qre mixed

29.How to make 500ml glucose solution with concentration 1 micromole per ml

CH3COC2H5-^{naoh/I2}-->X(yellow ppt.) -^{Ag}-->Y(g)

Find the number of words that can be formed by selecting 5 letters of the word INDEPENDENT

why is hydrogen peroxide stored in wax lined bottles?refer exemplar problem

For the reaction, A(s)+3B(g)→4C(s)+D(l).ΔH and ΔU are related as ?

Adsorption of a gas follows the Freundlich adsorption isotherm. 'x' is the mass of the gas adsorbed on mass 'm' of the adsorbent. The plot of log xm versus log p is shown in the graph given below, xm is proportional to:

7 A specimen of air at 298K and 750mmofHg saturated with benzene at 298K and 100mmofHg if the 1/3 volume of initial volume compress isothermally so found the final pressure of the system 1)2250torr 2)2150torr 3)2050torr 4)1950torr

Consider a tube that has a frilled disk sealed in its centre so that gases can effuse through it in both directions. If the left hand side contains H2 at a pressure P and temperature T and the right hand side contains He at a pressure 2P and temperature T, then initial ratio of rate of effusion is:

The physical property that is not affected by hydrogen bonding is:

If x , A ,B , y are in AP , then find B/A.

Which of the following compound of Xenon has pyramidal geometry?

What will be the oxidation number of I in the KI3 ?