Explore topic-wise InterviewSolutions in Current Affairs.

(c) Both (a) and (b) 

(c) Both (a) and (b) 

Consumer's behaviour is studied in Microeconomics.

Utility can be measured by Money.

Distinction between Fixed Exchange Rate and flexible Exchange Rate.

Foreign Exchange Rate : Foreign exchange rate refers to the rate at which one unit of currency of a country can be exchanged for the number of units of currency of another country. In other words, it is the price paid in domestic currency in order to get one unit of foreign currency. In other words, exchange rate expresses the ratio of exchange between the currencies of two countries. Hence, exchange rate is the price of a currency expressed in terms of another currency. 

(i) According to sayers, “ the price of currencies in terms of each other are called foreign exchange rate. “ 

(ii) According to crowther, “ The rate of exchange measures number of units of one currency which is exchanged in the foreign market for one unit.

(c) Factor endowment theory

Correct Answer is : (d) China

The headquarters of ASEAN is Jaharta.

Big cruisers are like Floating Resorts where guests can enjoy luxury and entertainment while moving towards their multiple destinations.

Correct option: (d) Mass Transportation

Correct Answer is: (c) 10 m s^-1 

v_CM = m₁v₁ + m₂v₂ / m₁ + m₂ = (10Kg)(14 m s^-1) + (4 Kg) /10 Kg + 4 Kg = 10 m s^-1.

Correct Answer is: (c) 2 h

For a satellite in a circular orbit around the earth, the time period T depends on the radius r as T² ∝ r³. Here, for the geostationary satellite, T₁ = 24 h and r₁ = 36 000 km. For the spy satellite, r₂ = 6400 km and time period = T₂ .

T₂²/T₁² = r₂³/r₁³ or T₂ = T₁ (r₂/r₁)^3/2 = (24 h)(6400 Km/36 000 Km)^3/2 ≃ 2 h.

Concept:

If we consider point A (x₁, y₁) and B (x₂, y₂)

then Mid-point of AB = (x, y) can be given by

\(\left( {x,\;y} \right) = \frac{{ x_1 ~+ ~x_2}}{2},\frac{{y_1 ~+~ y_2}}{2}\)

Calculate:

Given:

We have A (2, 4) and B(- 2, 8).

If we consider point A (x1, y1) and B (x2, y2)

then Mid-point of AB = (x, y) can be given by

\(\left( {x,\;y} \right) = \frac{{ x_1~ +~ x_2}}{2},\frac{{y_1 ~+~ y_2}}{2}\)

\(\left( {x,\;y} \right) = \frac{{ 2~+~(-2)}}{2},\frac{{4~+~8}}{2}\)

(x, y) = (0, 6)

Concept:

Consider the system of 'm' linear equations with 'n' unknown.

a11 x1 + a12 x2 + … + a1n xn = b₁

a21 x1 + a22 x2 + … + a2n xn = b₂

…

am1 x1 + am2 x2 + … + amn xn = b_m

To determine whether the above system of equations is consistent or not, we need to find the rank of the following matrix.

\(C = \left[ {\begin{array}{*{20}{c}} {{a_{11}}}&{{a_{12}}}& \ldots &{{a_{1n}}}&{b_1}\\ {{a_{21}}}&{{a_{22}}}& \ldots &{{a_{2n}}}&{b_2}\\ \ldots & \ldots & \ldots & \ldots \\ {{a_{m1}}}&{{a_{m2}}}& \ldots &{{a_{mn}}}&{b_m} \end{array}} \right]\)

C is the augmented matrix of the given system of equations.

Rank of A = Rank of C = no of unknown (consistent and unique solution)

Rank of A = Rank of C < no of unknown (inconsistent and infinite solution)

Rank of A < Rank of C (inconsistent and no solution)

Calculation:

Given:

x + y = 2

2x + 2y = 5

\(C=\begin{bmatrix} 1 & 1 &2 \\ 2& 2 &5 \end{bmatrix}\)

R₂' → R₂ - 2R1

\(C=\begin{bmatrix} 1 & 1 &2 \\ 0& 0 &1\end{bmatrix}\)

rank of C = 2 and rank of A = 1

i.e. Rank of A < Rank of C

∴ the given matrix is inconsistent and has no solution.

Calculation:

Given:

Given lines

x - 2y = 0     ----(1)

y - 3x = 0     ----(2)

Multiplying equation (2) with 2, we get

- 6x + 2y = 0      ----(3)

Adding (1) and (3), we get

- 5x = 0

x = 0

By substituting the value of x in (1), we get

x - 2y = 0 

0 - 2y = 0 

y = 0

Thus, the point of intersection of the given two lines is (0, 0).

Concept:

 A triangle ABC is said to be an isosceles triangle if triangle ABC must have two sides of equal length.

Calculations:

Given, the position vector of a point P with respect to origin O is î + 3ĵ - 2k̂ and that of a point Q is 3î + ĵ - 2k̂.

⇒\(\rm \bar {OP} \) = î + 3ĵ - 2k̂ and  \(\rm \bar {OQ}\) = 3î + ĵ - 2k̂.

⇒ |OP| = \(\rm \sqrt {1+9 + 4} = \sqrt {15}\)

⇒ |OQ| = \(\rm \sqrt {9 + 1+ 4} = \sqrt {15}\)

Here, |OP| = |OQ|

\(\rm \triangle POQ\) is isoscale.

The position vector of the bisector of the angle POQ = \(\rm \dfrac 1 2 (OP + OQ)\)

⇒The position vector of the bisector of the angle POQ = \(\rm \dfrac 1 2 [(î + 3ĵ - 2k̂) + (3î + ĵ - 2k̂)]\)

⇒The position vector of the bisector of the angle POQ = \(\rm \dfrac 1 2 (4î + 4ĵ - 4k̂) \)

⇒The position vector of the bisector of the angle POQ = \(\rm 2î + 2ĵ - 2k̂\)

(b) Forests that experience high levels of acid precipitation expose trees to soil that has more dissolved aluminum and less dissolved calcium.

(a) environmental resistance. 

(b) at half its carrying capacity. 

(b) Acid rain reacts with calcium to form calcium bicarbonate, which can be easily washed away.

(d) chronic stress that weakens many systems of the body.

(d) Agro chemicals are developed by the use of modern technology that depends on inorganic fertilizers and pesticides. Excess use of these fertilizers can lead to immediate harmful effect or can also be long lasting. Although many benefits are there by the use of agro chemicals which are related to increase yield of plants and animal crops and less wastage during storing. These profits are substantial.

The Right option is :(c) 1 only 

(d) All of these

(d) There is no single factor which cause an algal bloom. A combination of optimum factors such as the presence of good nutrients, warm temperatures, surface runoff, upwelling in the sea can all contribute harmfull algal blooms.

(b) The Researchers found a small correlation between cosmic rays and global temperatures occurring every 22 years; however, the changing cosmic ray rate lagged behind the change in temperatures by between one and two years, suggesting that the cause might not be down to cosmic rays and cloud formation but might be due to the direct effects of the sun. By comparing the small oscillations in the cosmic ray rate, which were taken from data from two neutron monitors, and temperature with the overall trends in both since 1955, the research team found that less than 14 per cent of the global warming seen during this period could be attributable to solar activity.

(c) become invasive 

(b) coal-burning power plants in the Midwest

The Right option is :(a) 1 and 3 

Development Communication

(d) Lead and cadmium compounds are added as stabilizers in PVC. These chemicals are used in the manufacture of soft plastic items such as vinyl flooring sheets, soft toys etc. to increase their durability. Lead and cadmium can leach out during human contact, or when disposed in land-fills. Incineration of such rejected plastic items produces ash with high heavy metal content. Use of lead compounds in the manufacturing process can be (a) potential hazard to workers in the PVC industry. Lead and cadmium are known neurotoxins and nephrotoxins respectively

(c) Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low pH). The term “acid rain” was coined in 1872 by Robert Angus Smith, after a link was established between sulfur dioxide (SO₂) emissions from the burning of coal in Manchester and acidification of nearby rainfall. Rainfall with pH less than 5.6 is called Acid rain.

(a) The United Nations Conference on Environment and Development (UNCED), also known as the Rio Summit or Earth Summit. It was a major United Nations conference held in Rio de Janeiro from 3 to 14 June 1992. In 2012, the United Nations Conference on Sustainable Development was also held in Rio, and is also commonly called Rio+20 or Rio Earth Summit 2012.

(c) Domestic as well as industrial effluents that contaminate river water if allowed to flow unchecked.

The Right option is :(c) Only II 

1. Body’s natural system of counter-balancing is called the parasympthetic nervous system on the relaxation response.

2. It can be consciously activated by deepening the breath and relaxing the skeletal muscles.

3. The other name for relaxation response is the rest and renew stage.

4. By increasing the frequency, time and depth of the relaxation response we can do so.

5. Yoga decreases the level of stress harmone cortisol in the blood. It reduces the responsiveness to the stressor.

6. Yoga postures enhance the circulation of blood and body fluids. This enhancement heals the body and activates the lymphatic system.

7. These are arthritis and osteoporosis.

8. (i) long-term

(ii) compressing.

Correct option: c) Nutrition

The higher number or Systolic pressure, refers to the pressure inside the artery when the heart contracts and pumps blood through the body. 

FOOD COST

Total food cost = Rs.42,000/-

LABOUR COST

Labour cost = Rs.30,800/-

Correct option: (a) 5 Volumes per 1000 volumes of books consulted

Continuous flow: It is a two arm procedure where in blood is drawn from one arm. The components are separated in a cart rid & the remaining cells & plasma flow back to the donor through the other area. Here the volume of blood which is outside the body is very small.

Interrupted flow: This is a one arm process. One line is connected to the donor the blood will be coming out after processing components will be separator, remaining required plasma & RBC’s will be reinfused back to the donor with same line and this process will take little longer time than the continuous flow.