46295 + Interview Questions in Chemistry

1.	The strongest ortho- para and strongest meta-directing groups respectively are
Answer» The strongest ortho- para and strongest meta-directing groups respectively are

Discussion

2.	The efficiency of a cell is 60%. Its cell reaction is A(s)+B2+(aq.)→A2+(aq.)+B;ΔH=−240 kJ. The standard electrode potential of cell is?
Answer» The efficiency of a cell is 60%. Its cell reaction is $A (s) + B^{2 +} (a q .) \to A^{2 +} (a q .) + B; Δ H = - 240 k J$ . The standard electrode potential of cell is?

Discussion

3.	The temperature of water at the surface of the lake is 2 degree celcius.What would be the temperature expected at the bottom
Answer» The temperature of water at the surface of the lake is 2 degree celcius.What would be the temperature expected at the bottom

Discussion

4.	17. Molarity and molality of solution of caustic soda are respectively 11.12 M and 94.12m. The density of solution is
Answer» 17. Molarity and molality of solution of caustic soda are respectively 11.12 M and 94.12m. The density of solution is

Discussion

5.	But what does the terminals of a cell indicate? Is it the relative conc of electrons of the cell that is represented?also, is the pot diff the diff in pot across these terminals which provides the work to move a charge between the ends?
Answer» But what does the terminals of a cell indicate? Is it the relative conc of electrons of the cell that is represented?also, is the pot diff the diff in pot across these terminals which provides the work to move a charge between the ends?

Discussion

6.	A wave or a pulse is reflected normally from the surface of a denser medium back into the rare medium .The phase change caused by the reflection- 1)0 2)pi/2 3)pi 4)3pi/2
Answer» A wave or a pulse is reflected normally from the surface of a denser medium back into the rare medium .The phase change caused by the reflection- 1)0 2)pi/2 3)pi 4)3pi/2

Discussion

7.	How many years would it take to spend Avogadro number of rupees 10 lakh rupees per second
Answer» How many years would it take to spend Avogadro number of rupees 10 lakh rupees per second

Discussion

8.	The number of possible structural isomers of the formula C4 H10 O ?? A] four B] six C] seven D] eight
Answer» The number of possible structural isomers of the formula C4 H10 O ?? A] four B] six C] seven D] eight

Discussion

9.	Which of the following will give positive iodoform test?
Answer» Which of the following will give positive iodoform test?

Discussion

10.	Which of the following aqueous solutions should have the least elevation in boiling point?
Answer» Which of the following aqueous solutions should have the least elevation in boiling point?

Discussion

11.	can acetone sublim
Answer» can acetone sublim

Discussion

12.	Which of the following options has the correct final product for the following reaction?
Answer» Which of the following options has the correct final product for the following reaction?

Discussion

13.	Which of the following reactions will be favoured at low pressure?
Answer» Which of the following reactions will be favoured at low pressure?

Discussion

14.	Which rule is violated in the electronic configuration1s02s22p4 ?
Answer» Which rule is violated in the electronic configuration $1 s^{0} 2 s^{2} 2 p^{4}$ ?

Discussion

15.	Borax is converted into crystalline boron by the following steps. Boraxx⟶H3BO3Heat⟶B2O3y⟶HeatB X & Y are respectively
Answer» Borax is converted into crystalline boron by the following steps. $B o r a x x ⟶ H_{3} B O_{3} H e a t ⟶ B_{2} O_{3} y ⟶ H e a t B$ X & Y are respectively

Discussion

16.	When 0.44g of colourless oxide of nitrogen occupies 224 mL at 1520 mm of HG and 273 degree Celsius , then the oxide is ???
Answer» When 0.44g of colourless oxide of nitrogen occupies 224 mL at 1520 mm of HG and 273 degree Celsius , then the oxide is ???

Discussion

17.	2. Structure and hybridisation of N_2O,ClO_2^+
Answer» 2. Structure and hybridisation of N_2O,ClO_2^+

Discussion

18.	find oxidation state of central metal atom and their hybridisation in the following complexes. \lbrack Cu{(en)}_2\rbrack^{+2} and \lbrack Ti{(Cl)}_6\rbrack^{2-}.
Answer» find oxidation state of central metal atom and their hybridisation in the following complexes. \lbrack Cu{(en)}_2\rbrack^{+2} and \lbrack Ti{(Cl)}_6\rbrack^{2-}.

Discussion

19.	Out of CH4 and CO2 which gas is more responsible for global warming and why?
Answer» Out of $C H_{4}$ and $C O_{2}$ which gas is more responsible for global warming and why?

Discussion

20.	Isotherms of carbon dioxide at various temperatures are represented in figure. Answer the following based on this figure. (i) In which state will CO2 exist between the points a and b at temperature T1 ? (ii) At what point will CO2 start liquefying when temperature is T1? (iii) At what point will CO2 be completely liquefied when temperature is (T_2\) (iv) Will condensation take place when the temperature is T3? (v) What portion of the isotherm at T1 represent liquid and gaseous CO2 at equilibrium?
Answer» Isotherms of carbon dioxide at various temperatures are represented in figure. Answer the following based on this figure. (i) In which state will $C O_{2}$ exist between the points a and b at temperature $T_{1}$ ? (ii) At what point will $C O_{2}$ start liquefying when temperature is $T_{1}$ ? (iii) At what point will $C O_{2}$ be completely liquefied when temperature is (T_2\) (iv) Will condensation take place when the temperature is $T_{3}$ ? (v) What portion of the isotherm at $T_{1}$ represent liquid and gaseous $C O_{2}$ at equilibrium?

20.

Isotherms of carbon dioxide at various temperatures are represented in figure. Answer the following based on this figure. (i) In which state will CO2 exist between the points a and b at temperature T1 ? (ii) At what point will CO2 start liquefying when temperature is T1? (iii) At what point will CO2 be completely liquefied when temperature is (T_2\) (iv) Will condensation take place when the temperature is T3? (v) What portion of the isotherm at T1 represent liquid and gaseous CO2 at equilibrium?

Answer»

Isotherms of carbon dioxide at various temperatures are represented in figure. Answer the following based on this figure.

(i) In which state will $C O_{2}$ exist between the points a and b at temperature $T_{1}$ ?

(ii) At what point will $C O_{2}$ start liquefying when temperature is $T_{1}$ ?

(iii) At what point will $C O_{2}$ be completely liquefied when temperature is (T_2\)

(iv) Will condensation take place when the temperature is $T_{3}$ ?

(v) What portion of the isotherm at $T_{1}$ represent liquid and gaseous $C O_{2}$ at equilibrium?

Discussion

21.	hybrid orbital of C6H
Answer» hybrid orbital of C6H

Discussion

22.	For the system A(g) + 2B(g) ⇌ C(g), the equilibrium concentrations are (A) 0.06 mole/litre (B) 0.12 mole/litre (C) 0.216 mole/litre. The Keq for the reaction is
Answer» For the system A(g) + 2B(g) $⇌$ C(g), the equilibrium concentrations are (A) 0.06 mole/litre (B) 0.12 mole/litre (C) 0.216 mole/litre. The $K_{e q}$ for the reaction is

22.

For the system A(g) + 2B(g) ⇌ C(g), the equilibrium concentrations are (A) 0.06 mole/litre (B) 0.12 mole/litre (C) 0.216 mole/litre. The Keq for the reaction is

Answer»

For the system A(g) + 2B(g) $⇌$ C(g), the equilibrium concentrations are (A)

0.06 mole/litre (B) 0.12 mole/litre (C) 0.216 mole/litre. The $K_{e q}$ for the

reaction is

Discussion

23.	Find the value of XY for the complex [CoBr2(CN)(NO2)(H2O)(NH3)] where: X = Number of compounds when both Br− are at cis position. Y = Number of compounds when both Br− are at trans position.
Answer» Find the value of $\frac{X}{Y}$ for the complex $[C o B r_{2} (C N) (N O_{2}) (H_{2} O) (N H_{3})]$ where: X = Number of compounds when both $B r^{-}$ are at cis position. Y = Number of compounds when both $B r^{-}$ are at trans position.

Discussion

24.	Explain why alkali and alkaline earth metals cannot be obtained by chemical reduction methods?
Answer» Explain why alkali and alkaline earth metals cannot be obtained by chemical reduction methods?

Discussion

25.	Give reasons for the following : (i) Where R is an alkyl group, R3P=O exists but R3N=O does not. (ii) PbCl4 is more covalent than PbCl2. (iii) At room temperature, N2 is not very reactive.
Answer» Give reasons for the following : (i) Where R is an alkyl group, $R_{3} P = O$ exists but $R_{3} N = O$ does not. (ii) $P b C l_{4}$ is more covalent than $P b C l_{2} .$ (iii) At room temperature, $N_{2}$ is not very reactive.

Discussion

26.	Carotenoids protect plants from
Answer» Carotenoids protect plants from

Discussion

27.	The maximum number of 900 angles between bond pair-bond pair of electrons is observed in
Answer» The maximum number of $90^{0}$ angles between bond pair-bond pair of electrons is observed in

Discussion

28.	For the cell reaction:Zn(s)+Cu2+(0.1 M)→Zn2+(0.01 M)+Cu(s)If E0 is the standard emf of the cell at 298 K. Then which of the following is correct?
Answer» For the cell reaction: $Z n (s) + C u^{2 +} (0.1 M) \to Z n^{2 +} (0.01 M) + C u (s)$ If $E^{0}$ is the standard emf of the cell at 298 K. Then which of the following is correct?

Discussion

29.	In which of the following compounds, the Fluorine atoms are placed axially in a trigonal bipyramidal geometry?
Answer» In which of the following compounds, the Fluorine atoms are placed axially in a trigonal bipyramidal geometry?

Discussion

30.	The compound which shows metamerism is :
Answer» The compound which shows metamerism is :

Discussion

31.	Consider an indicator HIn. Find the change in pH i.e. ΔpH of an acidic indicator when the ratio [In−][HIn] changes from 0.2 to 2. Given KIn=1×10−5
Answer» Consider an indicator $H I n$ . Find the change in $p H$ i.e. $Δ p H$ of an acidic indicator when the ratio $\frac{[I n^{-}]}{[H I n]}$ changes from $0.2$ to $2$ . Given $K_{I n} = 1 \times 10^{- 5}$

Discussion

32.	Two seperate bulbs contain ideal gases P and Q, respectively maintained at the same temperature. The density of gas P is twice of that of the Q, and the molecular weight of the gas P is half of that of the gas Q. The ratio of the pressure of gas P to that of gas Q is
Answer» Two seperate bulbs contain ideal gases $P$ and $Q$ , respectively maintained at the same temperature. The density of gas $P$ is twice of that of the $Q$ , and the molecular weight of the gas $P$ is half of that of the gas $Q$ . The ratio of the pressure of gas $P$ to that of gas $Q$ is

Discussion

33.	What is the meaning of electrostatic ?
Answer» What is the meaning of electrostatic ?

Discussion

34.	Name the following:(a) A particle that is formed when two or more atoms combine.(b) Molecules having atoms of the same kind.(c) A substance that is neither solid nor liquid, but has properties of both.
Answer» Name the following: (a) A particle that is formed when two or more atoms combine. (b) Molecules having atoms of the same kind. (c) A substance that is neither solid nor liquid, but has properties of both.

34.

Name the following:(a) A particle that is formed when two or more atoms combine.(b) Molecules having atoms of the same kind.(c) A substance that is neither solid nor liquid, but has properties of both.

Answer»

Name the following:

(a) A particle that is formed when two or more atoms combine.

(b) Molecules having atoms of the same kind.

(c) A substance that is neither solid nor liquid, but has properties of both.

Discussion

35.	in haber process 30l of dihydrogen and 30l of dinitrogen were taken for reaction which yielded only 50% of the expected product.What will be the composition of gaseous mixture under the aforesaid condition in the end
Answer» in haber process 30l of dihydrogen and 30l of dinitrogen were taken for reaction which yielded only 50% of the expected product.What will be the composition of gaseous mixture under the aforesaid condition in the end

Discussion

36.	Two possible stereo-structures of CH3CH(OH)COOH which are optically active, are called:
Answer» Two possible stereo-structures of $C H_{3} C H (O H) C O O H$ which are optically active, are called:

Discussion

37.	25. Why does cyclotrimetaphosphoric acid is monobasic though it has three OH groups?
Answer» 25. Why does cyclotrimetaphosphoric acid is monobasic though it has three OH groups?

Discussion

38.	The atoms of different isotopes of same element differ from each other in the number of
Answer» The atoms of different isotopes of same element differ from each other in the number of

Discussion

39.	Potash alum cannot be used as
Answer» Potash alum cannot be used as

Discussion

40.	Which of the following set does not contain similar ligands?
Answer» Which of the following set does not contain similar ligands?

Discussion

41.	The no of Oh- ions in 1 ml of solution having ph= 4
Answer» The no of Oh- ions in 1 ml of solution having ph= 4

Discussion

42.	15. During the recharging of lead acid storage cell the reaction at anode is
Answer» 15. During the recharging of lead acid storage cell the reaction at anode is

Discussion

43.	Two solutions of glucose have osmotic pressure 1.5 and 2.5atm.1litre of first solutions is mixed with 2litre of second solution .The osmotic pressure of the resultant solution will be how many atm
Answer» Two solutions of glucose have osmotic pressure 1.5 and 2.5atm.1litre of first solutions is mixed with 2litre of second solution .The osmotic pressure of the resultant solution will be how many atm

Discussion

44.	A valid Lewis structure of which of the following compounds cannot be drawn without violating the octet rule?
Answer» A valid Lewis structure of which of the following compounds cannot be drawn without violating the octet rule?

Discussion

45.	For a multielectron system, which of the following will be the correct sequence of energy of orbitals?
Answer» For a multielectron system, which of the following will be the correct sequence of energy of orbitals?

Discussion

46.	What happens when 1 a strong base reacts with a weak acid 2. A weak base reacts with a strong acid3. A strong base rsacts with a strong acid
Answer» What happens when 1 a strong base reacts with a weak acid 2. A weak base reacts with a strong acid 3. A strong base rsacts with a strong acid

Discussion

47.	NH4Cl crystallises in a body-centered cubic lattice with an unit cell edge length of 387 pm. The distance between the oppositely charged ions in the lattice is:
Answer» $N H_{4} C l$ crystallises in a body-centered cubic lattice with an unit cell edge length of 387 pm. The distance between the oppositely charged ions in the lattice is:

Discussion

48.	The green colour produced in the borax bead test of a chromium (III) salt is due to:
Answer» The green colour produced in the borax bead test of a chromium (III) salt is due to:

Discussion

49.	For the reaction, X(s)⇌Y(s)+Z(g), the plot of lnpzp0 versus 104T is given below (in solid line), when pz is the pressure (in bar) of the gas Z at temperature T and p0=1 bar.(Given, d(ln K)d(1T)=−ΔH0R, where the equilibrium constant, K=pzp0 and the gas constant. R=8.314 JK−1mol−1The value of ΔS0 (in JK−1mol−1) for the given reaction, at 1000 K is
Answer» For the reaction, $X (s) ⇌ Y (s) + Z (g)$ , the plot of $l n \frac{p_{z}}{p^{0}} versus \frac{10^{4}}{T}$ is given below (in solid line), when $p_{z}$ is the pressure (in bar) of the gas $Z$ at temperature $T$ and $p^{0} = 1$ bar. (Given, $\frac{d (l n K)}{d (\frac{1}{T})} = - \frac{Δ H^{0}}{R}$ , where the equilibrium constant, $K = \frac{p_{z}}{p^{0}}$ and the gas constant. $R = 8.314 J K^{- 1} m o l^{- 1}$ The value of $Δ S^{0}$ (in $J K^{- 1} m o l^{- 1}$ ) for the given reaction, at $1000 K$ is

Discussion

50.	A gas in an open container is heated from 270C TO 1270C. What will be the ratio of the gas left in the container to the original amount of gas?
Answer» A gas in an open container is heated from 27^{0C TO 127^0C.}What will be the ratio of the gas left in the container to the original amount of gas?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The strongest ortho- para and strongest meta-directing groups respectively are

The efficiency of a cell is 60%. Its cell reaction is A(s)+B2+(aq.)→A2+(aq.)+B;ΔH=−240 kJ. The standard electrode potential of cell is?

The temperature of water at the surface of the lake is 2 degree celcius.What would be the temperature expected at the bottom

17. Molarity and molality of solution of caustic soda are respectively 11.12 M and 94.12m. The density of solution is

But what does the terminals of a cell indicate? Is it the relative conc of electrons of the cell that is represented?also, is the pot diff the diff in pot across these terminals which provides the work to move a charge between the ends?

A wave or a pulse is reflected normally from the surface of a denser medium back into the rare medium .The phase change caused by the reflection- 1)0 2)pi/2 3)pi 4)3pi/2

How many years would it take to spend Avogadro number of rupees 10 lakh rupees per second

The number of possible structural isomers of the formula C4 H10 O ?? A] four B] six C] seven D] eight

Which of the following will give positive iodoform test?

Which of the following aqueous solutions should have the least elevation in boiling point?

can acetone sublim

Which of the following options has the correct final product for the following reaction?

Which of the following reactions will be favoured at low pressure?

Which rule is violated in the electronic configuration1s02s22p4 ?

Borax is converted into crystalline boron by the following steps. Boraxx⟶H3BO3Heat⟶B2O3y⟶HeatB X &amp; Y are respectively

When 0.44g of colourless oxide of nitrogen occupies 224 mL at 1520 mm of HG and 273 degree Celsius , then the oxide is ???

2. Structure and hybridisation of N_2O,ClO_2^+

find oxidation state of central metal atom and their hybridisation in the following complexes. \lbrack Cu{(en)}_2\rbrack^{+2} and \lbrack Ti{(Cl)}_6\rbrack^{2-}.

Out of CH4 and CO2 which gas is more responsible for global warming and why?

hybrid orbital of C6H

For the system A(g) + 2B(g) ⇌​ C(g), the equilibrium concentrations are (A) 0.06 mole/litre (B) 0.12 mole/litre (C) 0.216 mole/litre. The Keq for the reaction is

Find the value of XY for the complex [CoBr2(CN)(NO2)(H2O)(NH3)] where: X = Number of compounds when both Br− are at cis position. Y = Number of compounds when both Br− are at trans position.

Explain why alkali and alkaline earth metals cannot be obtained by chemical reduction methods?

Give reasons for the following : (i) Where R is an alkyl group, R3P=O exists but R3N=O does not. (ii) PbCl4 is more covalent than PbCl2. (iii) At room temperature, N2 is not very reactive.

Carotenoids protect plants from

The maximum number of 900 angles between bond pair-bond pair of electrons is observed in

For the cell reaction:Zn(s)+Cu2+(0.1 M)→Zn2+(0.01 M)+Cu(s)If E0 is the standard emf of the cell at 298 K. Then which of the following is correct?

In which of the following compounds, the Fluorine atoms are placed axially in a trigonal bipyramidal geometry?

The compound which shows metamerism is :

Consider an indicator HIn. Find the change in pH i.e. ΔpH of an acidic indicator when the ratio [In−][HIn] changes from 0.2 to 2. Given KIn=1×10−5

Two seperate bulbs contain ideal gases P and Q, respectively maintained at the same temperature. The density of gas P is twice of that of the Q, and the molecular weight of the gas P is half of that of the gas Q. The ratio of the pressure of gas P to that of gas Q is

What is the meaning of electrostatic ?

Name the following:(a) A particle that is formed when two or more atoms combine.(b) Molecules having atoms of the same kind.(c) A substance that is neither solid nor liquid, but has properties of both.

in haber process 30l of dihydrogen and 30l of dinitrogen were taken for reaction which yielded only 50% of the expected product.What will be the composition of gaseous mixture under the aforesaid condition in the end

Two possible stereo-structures of CH3CH(OH)COOH which are optically active, are called:

25. Why does cyclotrimetaphosphoric acid is monobasic though it has three OH groups?

The atoms of different isotopes of same element differ from each other in the number of

Potash alum cannot be used as

Which of the following set does not contain similar ligands?

The no of Oh- ions in 1 ml of solution having ph= 4

15. During the recharging of lead acid storage cell the reaction at anode is

Two solutions of glucose have osmotic pressure 1.5 and 2.5atm.1litre of first solutions is mixed with 2litre of second solution .The osmotic pressure of the resultant solution will be how many atm

A valid Lewis structure of which of the following compounds cannot be drawn without violating the octet rule?

For a multielectron system, which of the following will be the correct sequence of energy of orbitals?

What happens when 1 a strong base reacts with a weak acid 2. A weak base reacts with a strong acid3. A strong base rsacts with a strong acid

NH4Cl crystallises in a body-centered cubic lattice with an unit cell edge length of 387 pm. The distance between the oppositely charged ions in the lattice is:

The green colour produced in the borax bead test of a chromium (III) salt is due to:

A gas in an open container is heated from 270C TO 1270C. What will be the ratio of the gas left in the container to the original amount of gas?

Borax is converted into crystalline boron by the following steps. Boraxx⟶H3BO3Heat⟶B2O3y⟶HeatB X & Y are respectively

For the system A(g) + 2B(g) ⇌ C(g), the equilibrium concentrations are (A) 0.06 mole/litre (B) 0.12 mole/litre (C) 0.216 mole/litre. The Keq for the reaction is