10223 + Interview Questions in Chemistry Page 86 InterviewSolution

4251.	45. If in periodic table 10th periods are considered then number of subshell present in 9th period will be A)6 B)7 C)5 D)8
Answer» 45. If in periodic table 10th periods are considered then number of subshell present in 9th period will be A)6 B)7 C)5 D)8

Discussion

4252.	A sublimate component is obtained by the process of ____________.
Answer» A sublimate component is obtained by the process of ____________.

Discussion

4253.	What can be the allergin for urticaria other than cosmetics.
Answer» What can be the allergin for urticaria other than cosmetics.

Discussion

4254.	how to write the products if reactants are given in a chemical equation?
Answer» how to write the products if reactants are given in a chemical equation?

Discussion

4255.	Calculate the number of moles in 24.088 * 1023 molecules of water molecule.
Answer» Calculate the number of moles in 24.088 * $10^{23}$ molecules of water molecule.

Discussion

4256.	the vapor pressure of o nitrophenol at any given temperature is predicted to be- 1)higher than that of p nitrophenol 2)lower than that of o nitropheno
Answer» the vapor pressure of o nitrophenol at any given temperature is predicted to be- 1)higher than that of p nitrophenol 2)lower than that of o nitropheno

Discussion

4257.	Formulas of mica?
Answer» Formulas of mica?

Discussion

4258.	why melting point of MgO is much higher than that of BaO?
Answer» why melting point of MgO is much higher than that of BaO?

Discussion

4259.	Assertion (A) – RBCs are circular and biconcave in shape lacking all cell organelles. Reason (R) - Circular and biconcave shape increase the surface area for oxygen binding and the lack of organelles results in no self-utilisation of the oxygen attached to it.
Answer» Assertion (A) – RBCs are circular and biconcave in shape lacking all cell organelles. Reason (R) - Circular and biconcave shape increase the surface area for oxygen binding and the lack of organelles results in no self-utilisation of the oxygen attached to it.

4259.

Assertion (A) – RBCs are circular and biconcave in shape lacking all cell organelles. Reason (R) - Circular and biconcave shape increase the surface area for oxygen binding and the lack of organelles results in no self-utilisation of the oxygen attached to it.

Answer»

Assertion (A) – RBCs are circular and biconcave in shape lacking all cell organelles.

Reason (R) - Circular and biconcave shape increase the surface area for oxygen binding and the lack of organelles results in no self-utilisation of the oxygen attached to it.

Discussion

4260.	Which technique is used to separate drugs from blood?
Answer» Which technique is used to separate drugs from blood?

Discussion

4261.	A chemical equation should be balanced because:
Answer» A chemical equation should be balanced because:

Discussion

4262.	Why making a fruit salad from raw fruits is a physical change though it cannot be reversed?give proper explanation.
Answer» Why making a fruit salad from raw fruits is a physical change though it cannot be reversed?give proper explanation.

Discussion

4263.	68.What is an aryl.
Answer» 68.What is an aryl.

Discussion

4264.	The relationship between revolution per minute (rpm). steps per revolution (spr) and steps per second (sps) is given by
Answer» The relationship between revolution per minute (rpm). steps per revolution (spr) and steps per second (sps) is given by

Discussion

4265.	Why the electrons move only in circular orbits not in any other ?
Answer» Why the electrons move only in circular orbits not in any other ?

Discussion

4266.	85.When 0.02 litres of a mixture of hydrogen and oxygen was exploded , 0.003 litre of oxygen remained. Then prove that the initial composition of the mixture in % is 56 & 44 respectively.
Answer» 85.When 0.02 litres of a mixture of hydrogen and oxygen was exploded , 0.003 litre of oxygen remained. Then prove that the initial composition of the mixture in % is 56 & 44 respectively.

Discussion

4267.	For the following concentration cell at 298 K: Zn(s)\|Zn2+(aq,C1)\|\|Zn2+(aq,C2)\|Zn(s)C1 & C2 are concentrations of Zn2+ ions of each half-cell.Choose the correct option:
Answer» For the following concentration cell at $298 K$ : $Z n (s) \| Z n^{2 +} (a q, C_{1}) \| \| Z n^{2 +} (a q, C_{2}) \| Z n (s)$ $C_{1} & C_{2} are concentrations of Z n^{2 +} ions of each half-cell.$ Choose the correct option:

Discussion

4268.	The correct pressure conversion unit table is
Answer» The correct pressure conversion unit table is

Discussion

4269.	26. A density of NH4OH solution is 0.6g/ml.if contain 34% by weight of NH4OH .calculate the normality of solution?
Answer» 26. A density of NH4OH solution is 0.6g/ml.if contain 34% by weight of NH4OH .calculate the normality of solution?

Discussion

4270.	The correct procedure for preparing a colloidal solution of egg albumin in water is :(1) to break the egg shell, take only the white portion and to add it to water with constant stirring.(2) to break the egg shell, take only the yellow portion and to add it to boiling water with constant stirring(3) to boil the egg first, to break the egg shell, to add the white portion to ice cold water and to mix.(4) to boil the egg first, to break the egg shell, to add the yellow portion to water and to mix.
Answer» The correct procedure for preparing a colloidal solution of egg albumin in water is : (1) to break the egg shell, take only the white portion and to add it to water with constant stirring. (2) to break the egg shell, take only the yellow portion and to add it to boiling water with constant stirring (3) to boil the egg first, to break the egg shell, to add the white portion to ice cold water and to mix. (4) to boil the egg first, to break the egg shell, to add the yellow portion to water and to mix.

Discussion

4271.	33. if each orbital can hold a maximum of 3 electron . The number of element in second period of periodic table (long form) is 1) 27 2) 9 3) 18 4) 12
Answer» 33. if each orbital can hold a maximum of 3 electron . The number of element in second period of periodic table (long form) is 1) 27 2) 9 3) 18 4) 12

Discussion

4272.	Calculate the mass of 3g molecules of hno_3
Answer» Calculate the mass of 3g molecules of hno_3

Discussion

4273.	Question 1How will you find the valency of chlorine, sulphur and magnesium?
Answer» Question 1 How will you find the valency of chlorine, sulphur and magnesium?

Discussion

4274.	Calculate volume of oxygen at STP required to complete the combustion of 8 L of methane.16
Answer» Calculate volume of oxygen at STP required to complete the combustion of 8 L of methane. 16

Discussion

4275.	A gas is filled in a vessel at 27∘ Celsius. To what temperature should it be heated so that it 13 rd of of the gas escapes out of the vessel?
Answer» A gas is filled in a vessel at 27 ∘ Celsius. To what temperature should it be heated so that it 1 3 rd of of the gas escapes out of the vessel?

Discussion

4276.	Burning of a candle is a chemical as well as physical change, why? 1. The physical change occurs when the wax of candle melts and it loses its shape 2. The chemical change is combustion of fuel in presence of oxygen. This leads to the production and emission of carbon dioxide from the flame 3. The burning of a candle is only a chemical change 4. The burning of a candle is only a physical change
Answer» Burning of a candle is a chemical as well as physical change, why? 1. The physical change occurs when the wax of candle melts and it loses its shape 2. The chemical change is combustion of fuel in presence of oxygen. This leads to the production and emission of carbon dioxide from the flame 3. The burning of a candle is only a chemical change 4. The burning of a candle is only a physical change

4276.

Burning of a candle is a chemical as well as physical change, why? 1. The physical change occurs when the wax of candle melts and it loses its shape 2. The chemical change is combustion of fuel in presence of oxygen. This leads to the production and emission of carbon dioxide from the flame 3. The burning of a candle is only a chemical change 4. The burning of a candle is only a physical change

Answer»

Burning of a candle is a chemical as well as physical change, why?

1. The physical change occurs when the wax of candle melts and it loses its shape
2. The chemical change is combustion of fuel in presence of oxygen. This leads to the production and emission of carbon dioxide from the flame
3. The burning of a candle is only a chemical change
4. The burning of a candle is only a physical change

Discussion

4277.	What do you mean by strength of the solution?
Answer» What do you mean by strength of the solution?

Discussion

4278.	In an electroplating experiment m g of silver is deposited, when 4 amperes of current flows for 2 minutes. The amount (in gms) of silver deposited by 6 amperes of current flowing for 40 seconds will be [MNR 1991]
Answer» In an electroplating experiment m g of silver is deposited, when 4 amperes of current flows for 2 minutes. The amount (in gms) of silver deposited by 6 amperes of current flowing for 40 seconds will be [MNR 1991]

4278.

In an electroplating experiment m g of silver is deposited, when 4 amperes of current flows for 2 minutes. The amount (in gms) of silver deposited by 6 amperes of current flowing for 40 seconds will be [MNR 1991]

Answer»

In an electroplating experiment m g of silver is deposited, when 4 amperes

of current flows for 2 minutes. The amount (in gms) of silver deposited by 6

amperes of current flowing for 40 seconds will be

[MNR 1991]

Discussion

4279.	Balance the given equation: BaCl2+Al(so4)3⇒AlCl3+BaSo4
Answer» Balance the given equation: $B a C l_{2} + A l (s o_{4})_{3} \Rightarrow A l C l_{3} + B a S o_{4}$

Discussion

4280.	6.02 10^23 atoms of A 0.2 mole of B and 12.04 10^23 of c combine to make a command the empirical formula
Answer» 6.02 10^23 atoms of A 0.2 mole of B and 12.04 10^23 of c combine to make a command the empirical formula

Discussion

4281.	Find out the ratio of number of atoms in 1 gram NH3 and 1gram nitrogen
Answer» Find out the ratio of number of atoms in 1 gram NH3 and 1gram nitrogen

Discussion

4282.	Name the compound used in drying hydrogen chloride gas.
Answer» Name the compound used in drying hydrogen chloride gas.

Discussion

4283.	28.Is milk a pure substance ? Explain with reasons
Answer» 28.Is milk a pure substance ? Explain with reasons

Discussion

4284.	How many electrons are lost by zinc during the process of oxidation?
Answer» How many electrons are lost by zinc during the process of oxidation?

Discussion

4285.	If a + b + c = 0, then write the value of a3 + b3 + c3.
Answer» If a + b + c = 0, then write the value of a³ + b³ + c³.

Discussion

4286.	If we rub a comb in dry hair, then this comb attracts small pieces of paper. Which of the following can relate to this?
Answer» If we rub a comb in dry hair, then this comb attracts small pieces of paper. Which of the following can relate to this?

Discussion

4287.	The atomic numbers of four elements A, B, C and D are 12, 13, 15 and 3 respectively. The element which cannot form a cation is : (a) A (b) B (c) C (d) D
Answer» The atomic numbers of four elements A, B, C and D are 12, 13, 15 and 3 respectively. The element which cannot form a cation is : (a) A (b) B (c) C (d) D

4287.

The atomic numbers of four elements A, B, C and D are 12, 13, 15 and 3 respectively. The element which cannot form a cation is : (a) A (b) B (c) C (d) D

Answer»

The atomic numbers of four elements A, B, C and D are 12, 13, 15 and 3 respectively. The element which cannot form a cation is :

(a) A

(b) B

(c) C

(d) D

Discussion

4288.	9. CH3CH2CH2CH3 (reacts with chlorine in presence of sunlight) to form (A) + (B) which are monochlorination products The approximate ratio of percentage yield of (A) and (B) is a)60:40. b)50:50. c)45:55. d)28:72
Answer» 9. CH3CH2CH2CH3 (reacts with chlorine in presence of sunlight) to form (A) + (B) which are monochlorination products The approximate ratio of percentage yield of (A) and (B) is a)60:40. b)50:50. c)45:55. d)28:72

Discussion

4289.	how many moles of H+ are required to balance the following reaction 2MnO_4- 10Br- +H+\underset{}{→2Mn+2 + 5BR2
Answer» how many moles of H+ are required to balance the following reaction 2MnO_4- 10Br- +H+\underset{}{→2Mn+2 + 5BR2

Discussion

4290.	Which of the following is a solution? Shaving cream, Milk, Fog, Soap solution, Hairspray
Answer» Which of the following is a solution? Shaving cream, Milk, Fog, Soap solution, Hairspray

4290.

Which of the following is a solution? Shaving cream, Milk, Fog, Soap solution, Hairspray

Answer»

Which of the following is a solution?

Shaving cream, Milk, Fog, Soap solution, Hairspray

Discussion

4291.	relative and actual atomic mass of N
Answer» relative and actual atomic mass of N

Discussion

4292.	At sea level, the atmospheric pressure is 76 cm of Hg. If air pressure falls by 10 mm of Hg per 120 m of ascent, what is the height of a hill where the barometer reads 70 cm Hg. State the assumption made by you.
Answer» At sea level, the atmospheric pressure is 76 cm of Hg. If air pressure falls by 10 mm of Hg per 120 m of ascent, what is the height of a hill where the barometer reads 70 cm Hg. State the assumption made by you.

Discussion

4293.	How water rises up on filter paper in the process of chromatography?
Answer» How water rises up on filter paper in the process of chromatography?

Discussion

4294.	What is the auto reduction of copper called?Cu2o+cu2s----->cu+so2
Answer» What is the auto reduction of copper called? Cu2o+cu2s----->cu+so2

Discussion

4295.	What are ionic and molecular compounds? Give examples.
Answer» What are ionic and molecular compounds? Give examples.

Discussion

4296.	Which of the following compounds are used to prepare N2?
Answer» Which of the following compounds are used to prepare $N_{2}$ ?

Discussion

4297.	Which of the following do not affect the barometric height at a given place?
Answer» Which of the following do not affect the barometric height at a given place?

Discussion

4298.	Why dogs generally hang out their tongue in summer
Answer» Why dogs generally hang out their tongue in summer

Discussion

4299.	Calcination is a process in which the ore is heated strongly in the absence of air to remove volatile impurities. It thermally decomposes the carbonate. ACalcination−−−−−−−→CaO+MgO+2CO2 find out A:
Answer» Calcination is a process in which the ore is heated strongly in the absence of air to remove volatile impurities. It thermally decomposes the carbonate. $A C a l c i n a t i o n - ------ \to C a O + M g O + 2 C O_{2}$ find out A:

Discussion

4300.	a compound contains 0.5 percent ofS . if the no of S atom present per molecule is 2 .then the molecular mass of the compound i
Answer» a compound contains 0.5 percent ofS . if the no of S atom present per molecule is 2 .then the molecular mass of the compound i

Discussion

Explore topic-wise InterviewSolutions in .

45. If in periodic table 10th periods are considered then number of subshell present in 9th period will be A)6 B)7 C)5 D)8

A sublimate component is obtained by the process of ____________.

What can be the allergin for urticaria other than cosmetics.

how to write the products if reactants are given in a chemical equation?

Calculate the number of moles in 24.088 * 1023 molecules of water molecule.

the vapor pressure of o nitrophenol at any given temperature is predicted to be- 1)higher than that of p nitrophenol 2)lower than that of o nitropheno

Formulas of mica?

why melting point of MgO is much higher than that of BaO?

Assertion (A) – RBCs are circular and biconcave in shape lacking all cell organelles. Reason (R) - Circular and biconcave shape increase the surface area for oxygen binding and the lack of organelles results in no self-utilisation of the oxygen attached to it.

Which technique is used to separate drugs from blood?

A chemical equation should be balanced because:

Why making a fruit salad from raw fruits is a physical change though it cannot be reversed?give proper explanation.

68.What is an aryl.

The relationship between revolution per minute (rpm). steps per revolution (spr) and steps per second (sps) is given by

Why the electrons move only in circular orbits not in any other ?

85.When 0.02 litres of a mixture of hydrogen and oxygen was exploded , 0.003 litre of oxygen remained. Then prove that the initial composition of the mixture in % is 56 & 44 respectively.

For the following concentration cell at 298 K: Zn(s)|Zn2+(aq,C1)||Zn2+(aq,C2)|Zn(s)C1 &amp; C2 are concentrations of Zn2+ ions of each half-cell.Choose the correct option:

The correct pressure conversion unit table is

26. A density of NH4OH solution is 0.6g/ml.if contain 34% by weight of NH4OH .calculate the normality of solution?

33. if each orbital can hold a maximum of 3 electron . The number of element in second period of periodic table (long form) is 1) 27 2) 9 3) 18 4) 12

Calculate the mass of 3g molecules of hno_3

Question 1How will you find the valency of chlorine, sulphur and magnesium?

Calculate volume of oxygen at STP required to complete the combustion of 8 L of methane.16

A gas is filled in a vessel at 27∘ Celsius. To what temperature should it be heated so that it 13 rd of of the gas escapes out of the vessel?

What do you mean by strength of the solution?

In an electroplating experiment m g of silver is deposited, when 4 amperes of current flows for 2 minutes. The amount (in gms) of silver deposited by 6 amperes of current flowing for 40 seconds will be [MNR 1991]

Balance the given equation: BaCl2+Al(so4)3⇒AlCl3+BaSo4

6.02 *10^23 atoms of A 0.2 mole of B and 12.04 *10^23 of c combine to make a command the empirical formula

Find out the ratio of number of atoms in 1 gram NH3 and 1gram nitrogen

Name the compound used in drying hydrogen chloride gas.

28.Is milk a pure substance ? Explain with reasons

How many electrons are lost by zinc during the process of oxidation?

If a + b + c = 0, then write the value of a3 + b3 + c3.

If we rub a comb in dry hair, then this comb attracts small pieces of paper. Which of the following can relate to this?

The atomic numbers of four elements A, B, C and D are 12, 13, 15 and 3 respectively. The element which cannot form a cation is : (a) A (b) B (c) C (d) D

9. CH3CH2CH2CH3 (reacts with chlorine in presence of sunlight) to form (A) + (B) which are monochlorination products The approximate ratio of percentage yield of (A) and (B) is a)60:40. b)50:50. c)45:55. d)28:72

how many moles of H+ are required to balance the following reaction 2MnO_4- 10Br- +H+\underset{}{→2Mn+2 + 5BR2

Which of the following is a solution? Shaving cream, Milk, Fog, Soap solution, Hairspray

relative and actual atomic mass of N

At sea level, the atmospheric pressure is 76 cm of Hg. If air pressure falls by 10 mm of Hg per 120 m of ascent, what is the height of a hill where the barometer reads 70 cm Hg. State the assumption made by you.

How water rises up on filter paper in the process of chromatography?

What is the auto reduction of copper called?Cu2o+cu2s----->cu+so2

What are ionic and molecular compounds? Give examples.

Which of the following compounds are used to prepare N2?

Which of the following do not affect the barometric height at a given place?

Why dogs generally hang out their tongue in summer

Calcination is a process in which the ore is heated strongly in the absence of air to remove volatile impurities. It thermally decomposes the carbonate. ACalcination−−−−−−−→CaO+MgO+2CO2 find out A:

a compound contains 0.5 percent ofS . if the no of S atom present per molecule is 2 .then the molecular mass of the compound i

For the following concentration cell at 298 K: Zn(s)|Zn2+(aq,C1)||Zn2+(aq,C2)|Zn(s)C1 & C2 are concentrations of Zn2+ ions of each half-cell.Choose the correct option:

6.02 10^23 atoms of A 0.2 mole of B and 12.04 10^23 of c combine to make a command the empirical formula