10223 + Interview Questions in Chemistry Page 141 InterviewSolution

7001.	In Rutherford's scattering experiment, which of the following does not happen?
Answer» In Rutherford's scattering experiment, which of the following does not happen?

Discussion

7002.	Convert the temperature of 373∘ C to the Kelvin scale.
Answer» Convert the temperature of 373 $^{\circ}$ C to the Kelvin scale.

Discussion

7003.	Taj Mahal is one of the strongest monument and is made up of white marble. It is damaged due to acid rain. This phenomenon is called:
Answer» Taj Mahal is one of the strongest monument and is made up of white marble. It is damaged due to acid rain. This phenomenon is called:

Discussion

7004.	Sodium thiosulphate could be synthesized by
Answer» Sodium thiosulphate could be synthesized by

Discussion

7005.	Choose the correct option: ZnOH2 + ___ → ZnSO4 + 2H2O
Answer» Choose the correct option: $Z n {O H}_{2} +$ ___ $\to Z n S O_{4} + 2 H_{2} O$

Discussion

7006.	What is the meaning of periodic function in Mendeleev's periodic law?
Answer» What is the meaning of periodic function in Mendeleev's periodic law?

Discussion

7007.	What does 2H2O represent?
Answer» What does $2 H_{2} O$ represent?

Discussion

7008.	Which of the following sub atomic particle has mass one unit and charge plus one?
Answer» Which of the following sub atomic particle has mass one unit and charge plus one?

Discussion

7009.	Question 29 Calculate the number of neutrons present in the nucleus of an element X which is represented as 3115X
Answer» Question 29 Calculate the number of neutrons present in the nucleus of an element X which is represented as $_{15}^{31} X$

Discussion

7010.	Question 1 (a) Which separation techniques will you apply for the separation of the following? a. Sodium chloride from its solution in water.
Answer» Question 1 (a) Which separation techniques will you apply for the separation of the following? a. Sodium chloride from its solution in water.

Discussion

7011.	A class teacher demonstrates the effect of impurities on the boiling point of water using the arrangement of apparatus as shown below : What could be the probable thermometer reading recorded during the experiment?
Answer» A class teacher demonstrates the effect of impurities on the boiling point of water using the arrangement of apparatus as shown below : What could be the probable thermometer reading recorded during the experiment?

Discussion

7012.	Question 13 (a) Evaporation of a liquid at room temperature leads to a ___ effect.
Answer» Question 13 (a) Evaporation of a liquid at room temperature leads to a ___ effect.

Discussion

7013.	Potassium is kept in
Answer» Potassium is kept in

Discussion

7014.	Write down the names of compounds represented by the following formulae: [ 5 MARKS ] 1. Al2 (SO4)3 2. CaCl2 3. K2SO4 4. KNO3 5. CaCO3
Answer» Write down the names of compounds represented by the following formulae: [ 5 MARKS ] 1. Al₂(SO₄)₃ 2. CaCl₂ 3. K₂SO₄ 4. KNO₃ 5. CaCO₃

7014.

Write down the names of compounds represented by the following formulae: [ 5 MARKS ] 1. Al2 (SO4)3 2. CaCl2 3. K2SO4 4. KNO3 5. CaCO3

Answer»

Write down the names of compounds represented by the following formulae: [ 5 MARKS ]

1. Al₂(SO₄)₃

2. CaCl₂

3. K₂SO₄

4. KNO₃

5. CaCO₃

Discussion

7015.	Which of the following is an example of redox reaction?
Answer» Which of the following is an example of redox reaction?

Discussion

7016.	Drying of wet clothes in an open terrace takes place due to the phenomenon of ___
Answer» Drying of wet clothes in an open terrace takes place due to the phenomenon of ___

Discussion

7017.	Metals can be drawn into thin wires. This is because:
Answer» Metals can be drawn into thin wires. This is because:

Discussion

7018.	The diagram shows an electron gun of a hot cathode ray tube. A 6 V D.C. source and a 1000 V D.C. sourece are available. How will these sourece should be connected to the terminals of X and Y so as to obtain a focused beam of fast moving electrons?
Answer» The diagram shows an electron gun of a hot cathode ray tube. A 6 V D.C. source and a 1000 V D.C. sourece are available. How will these sourece should be connected to the terminals of X and Y so as to obtain a focused beam of fast moving electrons?

7018.

The diagram shows an electron gun of a hot cathode ray tube. A 6 V D.C. source and a 1000 V D.C. sourece are available. How will these sourece should be connected to the terminals of X and Y so as to obtain a focused beam of fast moving electrons?

Answer»

The diagram shows an electron gun of a hot cathode ray tube.

A 6 V D.C. source and a 1000 V D.C. sourece are available. How will these sourece should be connected to the terminals of X and Y so as to obtain a focused beam of fast moving electrons?

Discussion

7019.	Arrange the molecules in the increasing order of molecular weight from top to bottom.
Answer» Arrange the molecules in the increasing order of molecular weight from top to bottom.

Discussion

7020.	Which of the following mixtures of gases is called the producer gas?
Answer» Which of the following mixtures of gases is called the producer gas?

Discussion

7021.	Taj Mahal is damaged due to acid rain. This phenomenon is called ___ .
Answer» Taj Mahal is damaged due to acid rain. This phenomenon is called ___ .

Discussion

7022.	Choose the correct option (a) Rutherford's alpha-particle scattering experiment discovered A. Electron B. Proton C. Atomic nucleus D. Neutron (b) Number of valence electrons in O2− is : A. 6 B. 8 C. 10 D. 4 (c) Which of the following is the correct electronic configuration of potassium ? A. 2, 8, 9 B. 8, 2, 9 C. 2, 8, 8, 1 D. 1, 2, 8, 8
Answer» Choose the correct option (a) Rutherford's alpha-particle scattering experiment discovered A. Electron B. Proton C. Atomic nucleus D. Neutron (b) Number of valence electrons in $O^{2 -}$ is : A. 6 B. 8 C. 10 D. 4 (c) Which of the following is the correct electronic configuration of potassium ? A. 2, 8, 9 B. 8, 2, 9 C. 2, 8, 8, 1 D. 1, 2, 8, 8

7022.

Choose the correct option (a) Rutherford's alpha-particle scattering experiment discovered A. Electron B. Proton C. Atomic nucleus D. Neutron (b) Number of valence electrons in O2− is : A. 6 B. 8 C. 10 D. 4 (c) Which of the following is the correct electronic configuration of potassium ? A. 2, 8, 9 B. 8, 2, 9 C. 2, 8, 8, 1 D. 1, 2, 8, 8

Answer»

Choose the correct option

(a) Rutherford's alpha-particle scattering experiment discovered

A. Electron B. Proton

C. Atomic nucleus D. Neutron

(b) Number of valence electrons in $O^{2 -}$ is :

A. 6 B. 8

C. 10 D. 4

(c) Which of the following is the correct electronic configuration of potassium ?

A. 2, 8, 9 B. 8, 2, 9

C. 2, 8, 8, 1 D. 1, 2, 8, 8

Discussion

7023.	Which test should be made before collecting hydrogen in a gas jar ?
Answer» Which test should be made before collecting hydrogen in a gas jar ?

Discussion

7024.	Why can you smell the perfume of incense stick ?
Answer» Why can you smell the perfume of incense stick ?

Discussion

7025.	Find the value of X in the following equation: 4NO2+2H2O+O2→ XHNO34
Answer» Find the value of X in the following equation: $4 N O_{2} + 2 H_{2} O + O_{2} \to$ $X H N O_{3}$ 4

7025.

Find the value of X in the following equation: 4NO2+2H2O+O2→ XHNO34

Answer»

Find the value of X in the following equation:

$4 N O_{2} + 2 H_{2} O + O_{2} \to$ $X H N O_{3}$

4

Discussion

7026.	In the formation of organic compounds is the law of chemical combination violated ?
Answer» In the formation of organic compounds is the law of chemical combination violated ?

7026.

In the formation of organic compounds is the law of chemical combination violated ?

Answer»

In the formation of organic compounds is the law of chemical combination violated

?

Discussion

7027.	Condensation occurs at a fixed temperature whereas melting occurs over a range of temperature
Answer» Condensation occurs at a fixed temperature whereas melting occurs over a range of temperature

Discussion

7028.	Difference between suspension and colloid.
Answer» Difference between suspension and colloid.

Discussion

7029.	How can we say that a mixture contains more than one substance?
Answer» How can we say that a mixture contains more than one substance?

Discussion

7030.	Which gas is produced when a mixture of iron filling and sulphur powder is treated with dilute sulphuric acid at room temperature? Which gas would be produced if the same mixture is heated strongly cooled and then treated with dilute sulphuric acid? What is the cause of difference in this property
Answer» Which gas is produced when a mixture of iron filling and sulphur powder is treated with dilute sulphuric acid at room temperature? Which gas would be produced if the same mixture is heated strongly cooled and then treated with dilute sulphuric acid? What is the cause of difference in this property

Discussion

7031.	Match the column (for electrolytic refining of Cu): Column−I Column−II(a)Anode(p)Thin sheets of pure Cu(b)Cathode(q)An aqueous solution of copper sulphate containing H2SO4(c)Electrolyte(r)Ag,Au(d)Anode mud(s)Impure metal of Cu
Answer» Match the column (for electrolytic refining of Cu): $\begin{matrix} C o l u m n - I & C o l u m n - I I (a) & A n o d e & (p) & T h i n s h e e t s o f p u r e C u (b) & C a t h o d e & (q) & A n a q u e o u s s o l u t i o n o f c o p p e r s u l p h a t e c o n t a i n i n g H_{2} S O_{4} (c) & E l e c t r o l y t e & (r) & A g, A u (d) & A n o d e m u d & (s) & I m p u r e m e t a l o f C u \end{matrix}$

Discussion

7032.	What is a pure substance?
Answer» What is a pure substance?

Discussion

7033.	Atomic masses of all elements are different then how can it have same number of particles that is 6.022×10 23 the Avogadro number
Answer» Atomic masses of all elements are different then how can it have same number of particles that is 6.022×10 23 the Avogadro number

Discussion

7034.	Why is isotope of carbon c-12 is used as standard unit for atomic mass and molecular mass
Answer» Why is isotope of carbon c-12 is used as standard unit for atomic mass and molecular mass

Discussion

7035.	Water, on boiling, gets converted into water vapour. In water vapour, the water molecules
Answer» Water, on boiling, gets converted into water vapour. In water vapour, the water molecules

7035.

Water, on boiling, gets converted into water vapour. In water vapour, the water molecules

Answer»

Water, on boiling, gets converted into water vapour.

In water vapour, the water molecules

Discussion

7036.	When dispersed phase is liquid and dispersion medium is gas, then the colloidal system is called?
Answer» When dispersed phase is liquid and dispersion medium is gas, then the colloidal system is called?

Discussion

7037.	what will happen if salt is added to ice?
Answer» what will happen if salt is added to ice?

Discussion

7038.	Taj Mahal has recently shown discolouration and damage. The most probable reason for this is:
Answer» Taj Mahal has recently shown discolouration and damage. The most probable reason for this is:

Discussion

7039.	is graphite a non metal? what is its special charecter?
Answer» is graphite a non metal? what is its special charecter?

Discussion

7040.	Given the unbalanced equation Al+O2=Al2O3 when this equation is completely balanced using the smallest whole numbers, what is the sum of the coeffecients?
Answer» Given the unbalanced equation $A l + O_{2} = A l 2 O_{3}$ when this equation is completely balanced using the smallest whole numbers, what is the sum of the coeffecients?

Discussion

7041.	Two equal masses of mass m each are attained to a string passing over a smooth pulley which is attained by a chain to a ceiling . The tension in the string is A)0 B)mg C)2mg D)1/2mg
Answer» Two equal masses of mass m each are attained to a string passing over a smooth pulley which is attained by a chain to a ceiling . The tension in the string is A)0 B)mg C)2mg D)1/2mg

7041.

Two equal masses of mass m each are attained to a string passing over a smooth pulley which is attained by a chain to a ceiling . The tension in the string is A)0 B)mg C)2mg D)1/2mg

Answer»

Two equal masses of mass m each are attained to a string passing over a smooth pulley which is attained by a chain to a ceiling . The tension in the string is

A)0

B)mg

C)2mg

D)1/2mg

Discussion

7042.	What are the reasons for separating the constituents of a mixture?
Answer» What are the reasons for separating the constituents of a mixture?

Discussion

7043.	Why are compounds pure even if it can be separated into its constituent particles?
Answer» Why are compounds pure even if it can be separated into its constituent particles?

Discussion

7044.	A group of atoms carrying a charge is called__.
Answer» A group of atoms carrying a charge is called__.

Discussion

7045.	Question 10 Which of the following is the outermost shell for elements of period 2? (a) K shell (b) L shell (c) M shell (d) N shell
Answer» Question 10 Which of the following is the outermost shell for elements of period 2? (a) K shell (b) L shell (c) M shell (d) N shell

Discussion

7046.	Question 18 State the number of atoms present in each of the following chemical Species (a) CO2−3 (b) PO3−4 (c) P2O5 (d) CO
Answer» Question 18 State the number of atoms present in each of the following chemical Species (a) $C O_{3}^{2 -}$ (b) $P O_{4}^{3 -}$ (c) $P_{2} O_{5}$ (d) $C O$

Discussion

7047.	Metals like lithium and calcium are ________ to metal hydrides (oxidised/reduced)
Answer» Metals like lithium and calcium are ________ to metal hydrides (oxidised/reduced)

Discussion

7048.	The calculated spin magnetic moment of Fe(II) is
Answer» The calculated spin magnetic moment of Fe(II) is

Discussion

7049.	1.375 g of cupric oxide was reduced by heating in a current of hydrogen and the mass of copper that remained was 1.098 g . In another experiment 1.179 g copper was dissolved in nitric acid and the resulting copper nitrate was converted into cupric oxide . The mass of cupric oxide formed was 1.476 g . Show that these results illustrate the law of constant composition.
Answer» 1.375 g of cupric oxide was reduced by heating in a current of hydrogen and the mass of copper that remained was 1.098 g . In another experiment 1.179 g copper was dissolved in nitric acid and the resulting copper nitrate was converted into cupric oxide . The mass of cupric oxide formed was 1.476 g . Show that these results illustrate the law of constant composition.

Discussion

7050.	We watched the vase begin ______ take shape ______ the potter’s hands.
Answer» We watched the vase begin ______ take shape ______ the potter’s hands.

Discussion

Explore topic-wise InterviewSolutions in .

In Rutherford's scattering experiment, which of the following does not happen?

Convert the temperature of 373∘ C to the Kelvin scale.

Taj Mahal is one of the strongest monument and is made up of white marble. It is damaged due to acid rain. This phenomenon is called:

Sodium thiosulphate could be synthesized by

Choose the correct option: ZnOH2 + ___ → ZnSO4 + 2H2O

What is the meaning of periodic function in Mendeleev's periodic law?

What does 2H2O represent?

Which of the following sub atomic particle has mass one unit and charge plus one?

Question 29 Calculate the number of neutrons present in the nucleus of an element X which is represented as 3115X

Question 1 (a) Which separation techniques will you apply for the separation of the following? a. Sodium chloride from its solution in water.

A class teacher demonstrates the effect of impurities on the boiling point of water using the arrangement of apparatus as shown below : What could be the probable thermometer reading recorded during the experiment?

Question 13 (a) Evaporation of a liquid at room temperature leads to a ___ effect.

Potassium is kept in

Write down the names of compounds represented by the following formulae: [ 5 MARKS ] 1. Al2 (SO4)3 2. CaCl2 3. K2SO4 4. KNO3 5. CaCO3

Which of the following is an example of redox reaction?

Drying of wet clothes in an open terrace takes place due to the phenomenon of ___

Metals can be drawn into thin wires. This is because:

The diagram shows an electron gun of a hot cathode ray tube. A 6 V D.C. source and a 1000 V D.C. sourece are available. How will these sourece should be connected to the terminals of X and Y so as to obtain a focused beam of fast moving electrons?

Arrange the molecules in the increasing order of molecular weight from top to bottom.

Which of the following mixtures of gases is called the producer gas?

Taj Mahal is damaged due to acid rain. This phenomenon is called ___ .

Which test should be made before collecting hydrogen in a gas jar ?

Why can you smell the perfume of incense stick ?

Find the value of X in the following equation: 4NO2+2H2O+O2→ XHNO34

In the formation of organic compounds is the law of chemical combination violated ?

Condensation occurs at a fixed temperature whereas melting occurs over a range of temperature

Difference between suspension and colloid.

How can we say that a mixture contains more than one substance?

Which gas is produced when a mixture of iron filling and sulphur powder is treated with dilute sulphuric acid at room temperature? Which gas would be produced if the same mixture is heated strongly cooled and then treated with dilute sulphuric acid? What is the cause of difference in this property

Match the column (for electrolytic refining of Cu): Column−I Column−II(a)Anode(p)Thin sheets of pure Cu(b)Cathode(q)An aqueous solution of copper sulphate containing H2SO4(c)Electrolyte(r)Ag,Au(d)Anode mud(s)Impure metal of Cu

What is a pure substance?

Atomic masses of all elements are different then how can it have same number of particles that is 6.022×10 23 the Avogadro number

Why is isotope of carbon c-12 is used as standard unit for atomic mass and molecular mass

Water, on boiling, gets converted into water vapour. In water vapour, the water molecules

When dispersed phase is liquid and dispersion medium is gas, then the colloidal system is called?

what will happen if salt is added to ice?

Taj Mahal has recently shown discolouration and damage. The most probable reason for this is:

is graphite a non metal? what is its special charecter?

Given the unbalanced equation Al+O2=Al2O3 when this equation is completely balanced using the smallest whole numbers, what is the sum of the coeffecients?

Two equal masses of mass m each are attained to a string passing over a smooth pulley which is attained by a chain to a ceiling . The tension in the string is A)0 B)mg C)2mg D)1/2mg

What are the reasons for separating the constituents of a mixture?

Why are compounds pure even if it can be separated into its constituent particles?

A group of atoms carrying a charge is called__.

Question 10 Which of the following is the outermost shell for elements of period 2? (a) K shell (b) L shell (c) M shell (d) N shell

Question 18 State the number of atoms present in each of the following chemical Species (a) CO2−3 (b) PO3−4 (c) P2O5 (d) CO

Metals like lithium and calcium are ________ to metal hydrides (oxidised/reduced)

The calculated spin magnetic moment of Fe(II) is

We watched the vase begin ______ take shape ______ the potter’s hands.

We watched the vase begin take shape the potter’s hands.