10223 + Interview Questions in Chemistry Page 48 InterviewSolution

2351.	Question 24Which among the following are unsaturated hydrocarbons?(a) (i) and (iii)(b) (ii) and (iii)(c) (ii) and (iv)(d) (iii) and (iv)
Answer» Question 24 Which among the following are unsaturated hydrocarbons? (a) (i) and (iii) (b) (ii) and (iii) (c) (ii) and (iv) (d) (iii) and (iv)

Discussion

2352.	She was filled with gratitude when she tested the new medicine as it was simply fire in a liquid form. her troubles were instantly at rest Tom's indifference was broken. Tom was responding well
Answer» She was filled with gratitude when she tested the new medicine as it was simply fire in a liquid form. her troubles were instantly at rest Tom's indifference was broken. Tom was responding well

2352.

She was filled with gratitude when she tested the new medicine as it was simply fire in a liquid form. her troubles were instantly at rest Tom's indifference was broken. Tom was responding well

Answer»

She was filled with gratitude when she tested the new medicine as

it was simply fire in a liquid form.

her troubles were instantly at rest

Tom's indifference was broken.

Tom was responding well

Discussion

2353.	12g Mg (at. mass 24 ) react with a dilute mineral acid to produce maximum hydrogen equal to
Answer» 12g Mg (at. mass 24 ) react with a dilute mineral acid to produce maximum hydrogen equal to

Discussion

2354.	Which one of the following is the modern symbol of Gold?
Answer» Which one of the following is the modern symbol of Gold?

Discussion

2355.	A mixture of milk and groundnut oil can be separated by : (a) sublimation (b) evaporation (c) separating funnel (d) filtration
Answer» A mixture of milk and groundnut oil can be separated by : (a) sublimation (b) evaporation (c) separating funnel (d) filtration

2355.

A mixture of milk and groundnut oil can be separated by : (a) sublimation (b) evaporation (c) separating funnel (d) filtration

Answer»

A mixture of milk and groundnut oil can be separated by :

(a) sublimation (b) evaporation (c) separating funnel (d) filtration

Discussion

2356.	ntCathode rays are moving between the poles of a magnet .Due to the effect of magnetic field of a magnetn nt1,velocity of rays increasesn nt2,velocity of rays decreasesn nt3,rays deflected towards south polen nt4,rays deflected in upward direction and perpendicular to plane of the papern
Answer» ntCathode rays are moving between the poles of a magnet .Due to the effect of magnetic field of a magnetn nt1,velocity of rays increasesn nt2,velocity of rays decreasesn nt3,rays deflected towards south polen nt4,rays deflected in upward direction and perpendicular to plane of the papern

Discussion

2357.	NH4COONH2(s)2NH3(g)+CO2(g).If equilibrium pressure of gaseous mixture is 3 atm then Kp will be ?
Answer» NH4COONH2(s)2NH3(g)+CO2(g).If equilibrium pressure of gaseous mixture is 3 atm then Kp will be ?

Discussion

2358.	Can methane ( lower alkane) undergoes nitration under any condition?
Answer» Can methane ( lower alkane) undergoes nitration under any condition?

Discussion

2359.	(a) Give the main differences between physical changes and chemical changes. (b) Which of the following are chemical changes and which physical ? Give reason. (i) a glass bottle breaking (ii) coal burning in air (iii) making a cake (iv) wool being knitted into a sweater
Answer» (a) Give the main differences between physical changes and chemical changes. (b) Which of the following are chemical changes and which physical ? Give reason. (i) a glass bottle breaking (ii) coal burning in air (iii) making a cake (iv) wool being knitted into a sweater

2359.

(a) Give the main differences between physical changes and chemical changes. (b) Which of the following are chemical changes and which physical ? Give reason. (i) a glass bottle breaking (ii) coal burning in air (iii) making a cake (iv) wool being knitted into a sweater

Answer»

(a) Give the main differences between physical changes and chemical changes.

(b) Which of the following are chemical changes and which physical ? Give reason.

(i) a glass bottle breaking (ii) coal burning in air

(iii) making a cake (iv) wool being knitted into a sweater

Discussion

2360.	The correct match regarding colloids is(1) Osmotic pressure – Electrical property(2) Charge on colloidal – Colligativeparticles property(3) Colour – Mechanicalproperty(4) Tyndall effect – Optical property
Answer» The correct match regarding colloids is (1) Osmotic pressure – Electrical property (2) Charge on colloidal – Colligative particles property (3) Colour – Mechanical property (4) Tyndall effect – Optical property

Discussion

2361.	Whait is dipole moment, polar and non-polar molecules?
Answer» Whait is dipole moment, polar and non-polar molecules?

Discussion

2362.	At certain temperature the conductivity of pure water is 6.61/100000000ohm cm the ionic conductance of H+ and OH- ions at this temperature are 350 and 200ohm-1 cm2 mol-1 respectively the ionic product of water at this temperature is
Answer» At certain temperature the conductivity of pure water is 6.61/100000000ohm cm the ionic conductance of H+ and OH- ions at this temperature are 350 and 200ohm-1 cm2 mol-1 respectively the ionic product of water at this temperature is

Discussion

2363.	Why do wet clothes placed on a clothesline get dry after some time? Explain.
Answer» Why do wet clothes placed on a clothesline get dry after some time? Explain.

Discussion

2364.	2412Mg and 2612Mg are symbols of two isotopes of magnesium. (a) Compare the atoms of these isotopes with respect to : (i) the composition of their nuclei. (ii) their electronic configurations. (b) Give reasons why teh two isotopes of magnesium ahve different mass numbers.
Answer» $_{12}^{24} M g a n d_{12}^{26} M g$ are symbols of two isotopes of magnesium. (a) Compare the atoms of these isotopes with respect to : (i) the composition of their nuclei. (ii) their electronic configurations. (b) Give reasons why teh two isotopes of magnesium ahve different mass numbers.

2364.

2412Mg and 2612Mg are symbols of two isotopes of magnesium. (a) Compare the atoms of these isotopes with respect to : (i) the composition of their nuclei. (ii) their electronic configurations. (b) Give reasons why teh two isotopes of magnesium ahve different mass numbers.

Answer»

$_{12}^{24} M g a n d_{12}^{26} M g$ are symbols of two isotopes of magnesium.

(a) Compare the atoms of these isotopes with respect to :

(i) the composition of their nuclei.

(ii) their electronic configurations.

(b) Give reasons why teh two isotopes of magnesium ahve different mass numbers.

Discussion

2365.	A symbol is a short form used for representing a/an _______ .
Answer» A symbol is a short form used for representing a/an _______ .

Discussion

2366.	In which of the following, the solubility of AgCl willbe maximum?(a) 0. 1 M NaNO3 (b) Water(c) 0 .1 M NaCl(d) 01 M NaBr.
Answer» In which of the following, the solubility of AgCl willbe maximum?(a) 0. 1 M NaNO3 (b) Water(c) 0 .1 M NaCl(d) 01 M NaBr.

Discussion

2367.	the pKa of weak acid is 4.5. the pOH of an aqueous solution of HA in which 50%of the HA acid is ionised is ?
Answer» the pKa of weak acid is 4.5. the pOH of an aqueous solution of HA in which 50%of the HA acid is ionised is ?

Discussion

2368.	34. Liquids A(p^° a=360mm hg) and b(p^° b= 320 m hg) are mixed. If solution has vapour pressure 340 mm hg what is mole fraction of b in solution
Answer» 34. Liquids A(p^° a=360mm hg) and b(p^° b= 320 m hg) are mixed. If solution has vapour pressure 340 mm hg what is mole fraction of b in solution

Discussion

2369.	Whats the full form of pH
Answer» Whats the full form of pH

Discussion

2370.	A certain alkaloid has 70.8%C,6.2%H and 4.1% of N and rest is O. The empirical formula is:
Answer» A certain alkaloid has $70.8 % C, 6.2 % H$ and $4.1 %$ of N and rest is O. The empirical formula is:

Discussion

2371.	Classify the following as a physical or a chemical change : (a) Drying of wet clothes (b) Manufacture of salt from seawater. (c) Butter getting rancid (d) Boiling of water (e) Burning of paper (f) Melting of wax (g) Burning of coal
Answer» Classify the following as a physical or a chemical change : (a) Drying of wet clothes (b) Manufacture of salt from seawater. (c) Butter getting rancid (d) Boiling of water (e) Burning of paper (f) Melting of wax (g) Burning of coal

2371.

Classify the following as a physical or a chemical change : (a) Drying of wet clothes (b) Manufacture of salt from seawater. (c) Butter getting rancid (d) Boiling of water (e) Burning of paper (f) Melting of wax (g) Burning of coal

Answer»

Classify the following as a physical or a chemical change :

(a) Drying of wet clothes

(b) Manufacture of salt from seawater.

(c) Butter getting rancid

(d) Boiling of water

(e) Burning of paper

(f) Melting of wax

(g) Burning of coal

Discussion

2372.	When sodium metal reacts with phenyl magnesium bromide what product does it gives
Answer» When sodium metal reacts with phenyl magnesium bromide what product does it gives

Discussion

2373.	What is the contribution of the following in developing the atomic theory?(a) Maharshi Kanada (b) Democritus
Answer» What is the contribution of the following in developing the atomic theory? (a) Maharshi Kanada (b) Democritus

Discussion

2374.	What is decomposition?
Answer» What is decomposition?

Discussion

2375.	in a uniform electric field if charge is fired in a direction different from line of electric field then the trajectory of the charge will be
Answer» in a uniform electric field if charge is fired in a direction different from line of electric field then the trajectory of the charge will be

Discussion

2376.	State two ways in which you can separate a mixture of sand and sugar.
Answer» State two ways in which you can separate a mixture of sand and sugar.

Discussion

2377.	How ions are formed ?
Answer» How ions are formed ?

Discussion

2378.	When d8 arrangement in nickel ion changes from a weak octahedral field in [Ni(H2O)6]2⊕ to a strong field in [Ni(CN)4]2⊝, which orbitals get lowered in energy? Assume tetragonal distortion along the Z-axis.(A) dx2−y2(B) dz2(C) dxy , dz2(D) dxz , dyz , dz2
Answer» When d8 arrangement in nickel ion changes from a weak octahedral field in [Ni(H2O)6]2⊕ to a strong field in [Ni(CN)4]2⊝ , which orbitals get lowered in energy? Assume tetragonal distortion along the Z-axis. (A) dx2−y2 (B) dz2 (C) dxy , dz2 (D) dxz , dyz , dz2

Discussion

2379.	Which scientist does not belong to Germany?
Answer» Which scientist does not belong to Germany?

Discussion

2380.	An electric field of magnitude 1000 N/C is produced between two parallel plates having a separation of 2.0 cm as shown in the figure. If an electron is projected with speed 2.7×106 m/s at an angle of 60∘ with the field, the maximum height reached by the electron will be[Assume gravity free space]
Answer» An electric field of magnitude $1000 N/C$ is produced between two parallel plates having a separation of $2.0 cm$ as shown in the figure. If an electron is projected with speed $2.7 \times 10^{6} m/s$ at an angle of $60^{\circ}$ with the field, the maximum height reached by the electron will be [Assume gravity free space]

Discussion

2381.	40ml,0.1M ammonia so\ln is mixed with 20 ml,0.1M HCl ,what is the ph of mixture?((pkb of NH3 so\ln is 4.74
Answer» 40ml,0.1M ammonia so\ln is mixed with 20 ml,0.1M HCl ,what is the ph of mixture?((pkb of NH3 so\ln is 4.74

Discussion

2382.	Write the differences between soaps and detergents.
Answer» Write the differences between soaps and detergents.

Discussion

2383.	the ratio of frequency of revolution in 2nd and 4th bohr orbit of H atom will be?
Answer» the ratio of frequency of revolution in 2nd and 4th bohr orbit of H atom will be?

Discussion

2384.	Question 8 (d) Identify the solutions among the following mixtures. d. Coal
Answer» Question 8 (d) Identify the solutions among the following mixtures. d. Coal

Discussion

2385.	20.If Z is a compressibility factor, van der Waals equation at low pressure can be written as
Answer» 20.If Z is a compressibility factor, van der Waals equation at low pressure can be written as

Discussion

2386.	Choose the correct statement a)catalyst increases the rate of reaction b)catalyst decreases the time of attainment of equilibrium c)catalyst decreases the activation energy d)all are correc
Answer» Choose the correct statement a)catalyst increases the rate of reaction b)catalyst decreases the time of attainment of equilibrium c)catalyst decreases the activation energy d)all are correc

Discussion

2387.	In general, Red Phosphorus is regarded to be unreactive at room temperature. Also it is commonly known that white Phosphorus is highly reactive at room temperature. What do you think will happen when Bromine is added to Red Phosphorus at room temperature?
Answer» In general, Red Phosphorus is regarded to be unreactive at room temperature. Also it is commonly known that white Phosphorus is highly reactive at room temperature. What do you think will happen when Bromine is added to Red Phosphorus at room temperature?

Discussion

2388.	The specific charge of an electron is
Answer» The specific charge of an electron is

Discussion

2389.	43. 1.Mole fraction of a gas in water is 0.001 at stp,determine it's henry law constant? 2.for a solution if p^° A=600 mm hg,p^° B=840 mm hg under atmospheric conditions and vapour pressure of solution is 1 atm then find. a.composition of solutions b.composition of vapour in equilibrium with solution.
Answer» 43. 1.Mole fraction of a gas in water is 0.001 at stp,determine it's henry law constant? 2.for a solution if p^° A=600 mm hg,p^° B=840 mm hg under atmospheric conditions and vapour pressure of solution is 1 atm then find. a.composition of solutions b.composition of vapour in equilibrium with solution.

Discussion

2390.	IF 1 MOLE OF AN IDEAL GAS AT CONSTANT TEMP. CHANGES ITS PRESSURE FROM 5 ATM TO 2 ATM AND VOLUME FROM 4L TO 10L ,THEN ENTHALPY CHANGE WILL BE
Answer» IF 1 MOLE OF AN IDEAL GAS AT CONSTANT TEMP. CHANGES ITS PRESSURE FROM 5 ATM TO 2 ATM AND VOLUME FROM 4L TO 10L ,THEN ENTHALPY CHANGE WILL BE

Discussion

2391.	Which of the following is True for carbon monoxide.
Answer» Which of the following is True for carbon monoxide.

Discussion

2392.	Are all pure substances elements?
Answer» Are all pure substances elements?

Discussion

2393.	What do you understand by mole ratio?
Answer» What do you understand by mole ratio?

Discussion

2394.	The mole fraction of solvent in 1.7 molal aqueous solution is :- (1) 0.03 (2) 0.97 (3) 1.7 (4) 1
Answer» The mole fraction of solvent in 1.7 molal aqueous solution is :- (1) 0.03 (2) 0.97 (3) 1.7 (4) 1

Discussion

2395.	In which case is the number of molecules of water maximum ? A) 18 ml of water B) 0.18 g of water C) 10^-3 mol of water D) 0.00224 L of water vapour at 1 am and 273K
Answer» In which case is the number of molecules of water maximum ? A) 18 ml of water B) 0.18 g of water C) 10^-3 mol of water D) 0.00224 L of water vapour at 1 am and 273K

Discussion

2396.	24.5g KClO3 is heated to give O2 which is allowed to react completely with H2 obtained from zinc and H2SO4 reaction.the weight of Zn required for the purpose would be (Zn=65)
Answer» 24.5g KClO3 is heated to give O2 which is allowed to react completely with H2 obtained from zinc and H2SO4 reaction.the weight of Zn required for the purpose would be (Zn=65)

Discussion

2397.	When pressure remaining constant, at what temperature will the rms speed of a gas molecules increase by 10% of the rms speed at NTP?
Answer» When pressure remaining constant, at what temperature will the rms speed of a gas molecules increase by 10% of the rms speed at NTP?

Discussion

2398.	Fill in the blanks: (a) The method of separating seeds of paddy from its stalk is called ________. (b) When milk is cooled after boiling and poured on a piece of cloth, cream (malai) is left behind on it. This process of separating cream from milk is an example of _________. (c) Salt is obtained from seawater by the process of __________. (d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. Clear water was then poured from top. The process of separation used in this example is called _________.
Answer» Fill in the blanks: (a) The method of separating seeds of paddy from its stalk is called ________. (b) When milk is cooled after boiling and poured on a piece of cloth, cream (malai) is left behind on it. This process of separating cream from milk is an example of _________. (c) Salt is obtained from seawater by the process of __________. (d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. Clear water was then poured from top. The process of separation used in this example is called _________.

2398.

Fill in the blanks: (a) The method of separating seeds of paddy from its stalk is called ____. (b) When milk is cooled after boiling and poured on a piece of cloth, cream (malai) is left behind on it. This process of separating cream from milk is an example of _. (c) Salt is obtained from seawater by the process of . (d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. Clear water was then poured from top. The process of separation used in this example is called ___.

Answer»

Fill in
the blanks:

(a) The method of separating seeds of paddy from
its stalk is called ________.

(b) When milk is cooled after boiling and poured
on a piece of cloth, cream (malai)
is left behind on it. This process of separating cream from milk is
an example of _________.

(c) Salt
is obtained from seawater by the process of __________.

(d) Impurities settled at the bottom when muddy
water was kept overnight in a bucket. Clear water was then poured
from top. The process of separation used in this example is called
_________.

Discussion

2399.	Which isotope of carbon is used for determining the age of fossils?
Answer» Which isotope of carbon is used for determining the age of fossils?

Discussion

2400.	Do the Mass of electron proton and neutron of every element is same? means for eg.hydrogen and oxygen atoms have electron proton and neutron in them..so can we say that the mass of electron proton and neutron in hydrogen and oxygen is the same..
Answer» Do the Mass of electron proton and neutron of every element is same? means for eg.hydrogen and oxygen atoms have electron proton and neutron in them..so can we say that the mass of electron proton and neutron in hydrogen and oxygen is the same..

Discussion

Explore topic-wise InterviewSolutions in .

Question 24Which among the following are unsaturated hydrocarbons?(a) (i) and (iii)(b) (ii) and (iii)(c) (ii) and (iv)(d) (iii) and (iv)

She was filled with gratitude when she tested the new medicine as it was simply fire in a liquid form. her troubles were instantly at rest Tom's indifference was broken. Tom was responding well

12g Mg (at. mass 24 ) react with a dilute mineral acid to produce maximum hydrogen equal to

Which one of the following is the modern symbol of Gold?

A mixture of milk and groundnut oil can be separated by : (a) sublimation (b) evaporation (c) separating funnel (d) filtration

ntCathode rays are moving between the poles of a magnet .Due to the effect of magnetic field of a magnetn nt1,velocity of rays increasesn nt2,velocity of rays decreasesn nt3,rays deflected towards south polen nt4,rays deflected in upward direction and perpendicular to plane of the papern

NH4COONH2(s)2NH3(g)+CO2(g).If equilibrium pressure of gaseous mixture is 3 atm then Kp will be ?

Can methane ( lower alkane) undergoes nitration under any condition?

(a) Give the main differences between physical changes and chemical changes. (b) Which of the following are chemical changes and which physical ? Give reason. (i) a glass bottle breaking (ii) coal burning in air (iii) making a cake (iv) wool being knitted into a sweater

The correct match regarding colloids is(1) Osmotic pressure – Electrical property(2) Charge on colloidal – Colligativeparticles property(3) Colour – Mechanicalproperty(4) Tyndall effect – Optical property

Whait is dipole moment, polar and non-polar molecules?

At certain temperature the conductivity of pure water is 6.61/100000000ohm cm the ionic conductance of H+ and OH- ions at this temperature are 350 and 200ohm-1 cm2 mol-1 respectively the ionic product of water at this temperature is

Why do wet clothes placed on a clothesline get dry after some time? Explain.

2412Mg and 2612Mg are symbols of two isotopes of magnesium. (a) Compare the atoms of these isotopes with respect to : (i) the composition of their nuclei. (ii) their electronic configurations. (b) Give reasons why teh two isotopes of magnesium ahve different mass numbers.

A symbol is a short form used for representing a/an _______ .

In which of the following, the solubility of AgCl willbe maximum?(a) 0. 1 M NaNO3 (b) Water(c) 0 .1 M NaCl(d) 01 M NaBr.

the pKa of weak acid is 4.5. the pOH of an aqueous solution of HA in which 50%of the HA acid is ionised is ?

34. Liquids A(p^° a=360mm hg) and b(p^° b= 320 m hg) are mixed. If solution has vapour pressure 340 mm hg what is mole fraction of b in solution

Whats the full form of pH

A certain alkaloid has 70.8%C,6.2%H and 4.1% of N and rest is O. The empirical formula is:

Classify the following as a physical or a chemical change : (a) Drying of wet clothes (b) Manufacture of salt from seawater. (c) Butter getting rancid (d) Boiling of water (e) Burning of paper (f) Melting of wax (g) Burning of coal

When sodium metal reacts with phenyl magnesium bromide what product does it gives

What is the contribution of the following in developing the atomic theory?(a) Maharshi Kanada (b) Democritus

What is decomposition?

in a uniform electric field if charge is fired in a direction different from line of electric field then the trajectory of the charge will be

State two ways in which you can separate a mixture of sand and sugar.

How ions are formed ?

When d8 arrangement in nickel ion changes from a weak octahedral field in [Ni(H2O)6]2⊕ to a strong field in [Ni(CN)4]2⊝, which orbitals get lowered in energy? Assume tetragonal distortion along the Z-axis.(A) dx2−y2(B) dz2(C) dxy , dz2(D) dxz , dyz , dz2

Which scientist does not belong to Germany?

40ml,0.1M ammonia so\ln is mixed with 20 ml,0.1M HCl ,what is the ph of mixture?((pkb of NH3 so\ln is 4.74

Write the differences between soaps and detergents.

the ratio of frequency of revolution in 2nd and 4th bohr orbit of H atom will be?

Question 8 (d) Identify the solutions among the following mixtures. d. Coal

20.If Z is a compressibility factor, van der Waals equation at low pressure can be written as

Choose the correct statement a)catalyst increases the rate of reaction b)catalyst decreases the time of attainment of equilibrium c)catalyst decreases the activation energy d)all are correc

In general, Red Phosphorus is regarded to be unreactive at room temperature. Also it is commonly known that white Phosphorus is highly reactive at room temperature. What do you think will happen when Bromine is added to Red Phosphorus at room temperature?

The specific charge of an electron is

IF 1 MOLE OF AN IDEAL GAS AT CONSTANT TEMP. CHANGES ITS PRESSURE FROM 5 ATM TO 2 ATM AND VOLUME FROM 4L TO 10L ,THEN ENTHALPY CHANGE WILL BE

Which of the following is True for carbon monoxide.

Are all pure substances elements?

What do you understand by mole ratio?

The mole fraction of solvent in 1.7 molal aqueous solution is :- (1) 0.03 (2) 0.97 (3) 1.7 (4) 1

In which case is the number of molecules of water maximum ? A) 18 ml of water B) 0.18 g of water C) 10^-3 mol of water D) 0.00224 L of water vapour at 1 am and 273K

24.5g KClO3 is heated to give O2 which is allowed to react completely with H2 obtained from zinc and H2SO4 reaction.the weight of Zn required for the purpose would be (Zn=65)

When pressure remaining constant, at what temperature will the rms speed of a gas molecules increase by 10% of the rms speed at NTP?

Which isotope of carbon is used for determining the age of fossils?

Do the Mass of electron proton and neutron of every element is same? means for eg.hydrogen and oxygen atoms have electron proton and neutron in them..so can we say that the mass of electron proton and neutron in hydrogen and oxygen is the same..