Explore topic-wise InterviewSolutions in Current Affairs.

Correct option is B) Indonesian

Correct option is C) Japanese

Taxes on incomes of individuals is called Direct tax.

Investment on Education is considered as one of the main sources of Human capital.

Two Difficulties in the Measurement of National Income :

• It is very Difficult to Calculate Income from Self Employment .
• Problem related to the Evaluation of Old Interim and Intermediate Goods .

Monopolistic Competition Market refers to that Market form, in which there are many producers of a Commodity which produces Close Substitute Goods and there is Free Entrance and Exit of Firms in the Market. 

Taxes on incomes of individuals is called Direct tax.

b) They are electromagnetic waves

Index numbers are expressed in Percentage.

1. Anode rays – Proton 

2. Cathode rays – Electron 

3. J.J Thomson – Plum-pudding model

4. Thea-particle scattering experiment – Nucleus

Gross Domestic Product at Market Price is the Sum of Market Value of all Final Goods and Services produced inside the Domestic Territory of a Country by all the Producers, during an Accounting Year.

GDP_MP = C + I + G + (X – M)

Here GDP_MP = Gross Domestic Product at Market Price 

C = Consumption Expenditure

I = Investment Expenditure

G = Government Expenditure

(X – M) = Net Exports

The method of Sample survey gives better results.

In Tabular presentation data is presented in Table.

(a) n = 2 f = 1 m = 0 s = +½ 

(c) n = 4 f = 3 m=1 s= -½ 

Option (b) is wrong because when n = 3, ^ = 0, 1, 2. 

Option (d) is wrong because when l = 2, m = -2, -1, 0, 1, 2.

(a) Both arguments are correct. 

(b) Cr and Cu have anomalous electronic configurations. This is because half filled and completely filled sub-shells have extra stability due to the symmetrical distribution of electrons maximum exchange energy. 

₂₄Cr = 1 s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹ 

OR

[Ar]3d⁵ 4s¹ This is due to the extra stability of half filled 3d⁵ sub-shell.

₂₉Cu = 1 s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹ 

OR

[Ar]3d¹⁰ 4s¹This is due to the extra stability of completely filled 3d¹⁰ sub-shell.

(b) Sample survey.

(c) MGNERAGA

1. The correct one is (ii). 

2. Hund’s rule of maximum multiplicity. 

3. Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital belonging to that subshell has got one electron each i.e., it is singly occupied.

The total energy of an electron in a Bohr orbit is given by \(\frac{-Ze^2}{8πɛor}\) .

Railway Transport introduced in India in the year 1850.

1. ₂₄Cr and ₂₉Cu. 

2. ₂₄Cr = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵ and 

₂₉Cu = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d¹⁰ 

3. This is due to the fact that exactly half filled and completely filled orbitals (i.e.,d⁵, d¹⁰) have extra stability due to symmetrical distribution of electrons and maximum exchange energy.

ΔV = \(\frac{1}{2m}\sqrt\frac{h}{π}\)

Railway transport introduced in India in the year 1850.

(a) Yes. For both 4s and 3p subshells the (n+l) value is 4. But 4s, with high value of ‘n’ has higher energy. 

(b) Aufbau principle – In the ground state of the atoms, the orbitals are filled in order of their increasing energies.

RBI regulates financial sector.

1. Yes. It is true. 

2. Heisenberg’s uncertainty principle. 

3. Heisenberg’s uncertainty principle states that it is not possible to determine simultaneously both position and momentum of a microscopic moving particle such as electron with absolute accuracy.

The number of orbitals and the maximum number of electrons that can be accommodated in a principal quantum level are n² & 2n²

(a) It is the figure of α -particle scattering experiment (gold foil experiment). 

(b) In this experiment, a stream of high energy α – particles from a radioactive source was directed at a thin foil of gold metal which had a circular fluorescent zinc sulphide screen around it. Whenever αparticles struck the screen, a tiny ash of light was produced at that point. The α- particles striking the gold foil were analysed. 

It was observed that: 

1. Most of the α – particles passed through gold foil undeflected. 

2. A small fraction of the α – particles are deflected by small angles. 

3. A very few α – particles(1 in 20,000) bounced back i.e., deflected by nearly 180°.

c) Rutherford drew the following conclusions regarding the structure of atom from this experiment: 

1. Most of the space in the atom is empty as most of the α – particles passed through the foil undeflected. 

2. The positive charge of the atom is concentrated in a very small volume (called nucleus) that repelled and deflected the positively charged α – particles.

3. Volume occupied by the nucleus is negligibly small as compared to the total volume of the atom.

(a) Poor and non-poor

Index numbers are expressed in percentage.

(i) Hund’s rule of maximum multiplicity, 

(ii) 10 electrons (4d sub-shell).

(1). Spherically symmetrical – s 

(2). Dumb-bell – p 

(3). Doubly dumb-bell – d

The limiting line of Balmer Series has the frequency of 8.23 × 10¹⁴

(a) Poor and non-poor.

Body of the table contains actual data.

(b) Self-employees.

(c) n = 4 l = 3 ml = -3 ms = -14

(a) The four quantum numbers are: 

(i) Principal quantum number (n) 

(ii) Azimuthal quantum number (l) 

(iii) Magnetic quantum number (m ) 

(iv) Spin quantum number (m ) 

(b) The argument of student 1 is correct. If there are two electrons in the same subshell the first three quantum numbers become the same. Hence we need fourth quantum number to identify the electron. 

(c) n = 3, l = 0, m = 0, s = +½

(a) 9

KOH → K⁺ + OH^- 

10^-5 M 10^-5 M 10^-5 M 

[OH ]= 10^-5 M 

pH = 14 – pOH 

pH = 14 – (-log [OH^-]) 

= 14 + log [OH^-] 

= 14 + log10^-5 

= 14 – 5 

= 9

(b) (iii) only