Explore topic-wise InterviewSolutions in Current Affairs.

(a) Height and weight are the two variables in the graph.

(b) In the graph,we observe that the points A represents a crocodile as it has least height and greatest weight among all animals.

A-Crocodile ‘ [least height, greatest weight]

B – Donkey [height and weight more than dog]

C – Dog

D – Ostrich [greatest height]

From the given graph, the letters that indicate the location of point is given below:

A indicates the points: (0, 4)

B indicates the points: (1, 5)

C indicates the points: (2, 6)

D indicates the points: (0, 2)

E indicates the points: (3, 3)

F indicates the points: (2, 0)

True

A fine graph, which represents the variation of a quantity with respect to the other, may be an unbroken line.

The coordinates of the vertices in the given figure are as follows.

O (0, 0), A (2, 0), B (2, 3), C (0, 3)

P (4, 3), Q (6, 1), R (6, 5), S (4, 7)

K (10, 5), L (7, 7), M (10, 8)

The correct answer is option (b) (3, 7)

Explanation:

The book positioned at a distance of 3 units from the y axis and 7 units from the x axis. Hence, the required coordinate point is (3, 7).

The coordinates are starting from the left-most and moving clockwise.

For figure I, the coordinates of its vertices are (1, 1), (2, 3), (4, 2) and (3, 0).

For figure II, the coordinates of its vertices are (0, 5), (2, 4) and (1, 2).

For figure III, the coordinates of its vertices are (1, 5), (2, 6), (3, 6), (4, 5), (4, 4), (2, 4) and (2, 5).

For figure IV, the coordinates of its vertices are (4, 3), (5, 5), (6, 3) and (5, 1).

The correct answer is option (b) Pie chart

Explanation:

A pie chart is used to compare the parts of a whole. Because, the circle represents the whole.

The correct answer is option (d) (6, 3)

Explanation:

It is known that, the distance from the x axis gives the y coordinate and the distance from the y axis gives the x coordinate. Hence, the coordinate point is (6, 3).

(a) By connecting the points, it is easier to understand a change in the temperature.

(b) Initially the temperature was 8°C at 6 AM and started increasing strictly till 1 PM and after that it decreased to 8°C till 12 PM;

(c) At 12 PM 19°C and at 8PM 10°C.

(a) This is a line graph.

(b) It represents the number of people, who visited the store at a particular time.

(c) The busiest time of day is 1 PM at a shop, as at this time maximum number of people i.e. 25 visited the shop.

(d) When it opens less than 5 people enter the shop.

(e) There are 20 people in the shop at 1:30 PM.

(a) At 1 p.m., the patient’s temperature was 36.5°C.

(b) The patient’s temperature was 38.5°C at 12 noon.

(c) The patient’s temperature was same at 1 p.m. and 2 p.m.

(d) The graph between the times 1 p.m. and 2 p.m. is parallel to the x-axis. The temperature at 1 p.m. and 2 p.m. is 36.5°C. So, the temperature at 1:30 p.m. is 36.5°C.

(e) During the following periods, the patient’s temperature showed an upward trend. 9 a.m. to 10 a.m., 10 a.m. to 11 a.m., 2 p.m. to 3 p.m.

The correct answer is option (a)

Explanation:

Both the x axis and y axis are perpendicular to each other and they meet at a single point called origin (0, 0).

Observing the graph carefully, we have

(a) The drop out rate was the highest in the year 1990 and the least in 2000.

(b) In the year 1996, the per cent of students dropped out of high school first fall below 5%.

(c) About 4.7% students dropped out of high school in 2007.

(a) The information obtained from the given graph is that the maximum temperature is 34°C
and minimum temperature is 25°C in a week.

(b) On Sunday, the temperature was 25°C. So, it is least temperature in the week.

(c) On Saturday, the temperature was 31 °C.

(d) On Friday, the temperature was maximum i.e. 34°C. Hence, it is the hottest day of the week.

The correct answer is option (c) 4 from the x axis and 3 from y axis

Explanation:

In the coordinate (3, 4), the first number represents the distance on x axis or y coordinate whereas the second number 4 represents the distance on y axis or the x coordinate.

(a) From the given graph, the car travels 80 km in 2h.

(b) 5 h taken by car to reach ft.

(c) 2 h taken by car to cover 80 km.

(d) G is 120 km far from the starting point.

(e) The car reaches the places after starting in 6 h.

The correct answer is option (c) R

Explanation:

From the given figure, the coordinates of S is (3, 3), the coordinates of P is (3, 0) and Coordinates of R is (0, 3)

Hence, option c is correct.

The correct answer is option (c) 28

Explanation:

From the given graph, the time (in sec) is taken in x axis and the number of words in y axis. When the look for the line graph to find the number of words corresponds to 30 seconds in the x axis, the words typed in 30 seconds comes out is approximately 28 words.

Line graph

We have already discussed in the previous question that a line graph displays data that changes continuously over periods of time.

The correct answer is option (c) (3, 2)

Explanation:

To find the coordinate, draw the perpendicular line from point x to the x axis and y from the y axis. From the given figure, the coordinate of x axis is 3, and the coordinate of y-axis is 2.

Hence, the coordinate of x is (3, 2)

The correct answer is option (d) Line chart

Explanation:

A line graph displays the continuous change of data over the period of time like speed or distance covered.

(i) 2 but not by 4.

Any number which follows the formula of 4n + 2 is an example of a number divisible by 2 but not by 4.

i.e., 10 where n = 1.

(ii) 3 but not by 6.

Any number which follows the formula of 6n + 3 is an example of a number divisible by 3 but not by 6.

i.e., 15 where n = 1.

(iii) 4 but not by 8.

Any number which follows the formula of 8n + 4 is an example of a number divisible by 4 but not by 8.

i.e., 28 where n = 1.

(iv) Both 4 and 8 but not by 32

Any number which follows the formula of 32n + 8 or 32n + 16 or 32n +24 is an example of a number divisible by both 4 and 8 but not by 32.

i.e., 48 where n = 1.

As we know that if a number is divided by 5, then remainder is obtained by dividing just the unit place by 5.

i.e., 7 ÷ 5 gives 2 as a remainder.

∴ Remainder will be 2 when 981547 is divided by 5.

As we know that if a number is divided by 11, then remainder is difference between sum of even and odd digit places.

i.e., Remainder = 7 + 8 – 9 = 6

∴ Remainder will be 6 when 798 is divided by 11.

A s we know that if a number is divided by 3, then remainder is obtained by dividing sum of digits by 3.

Here, sum of digits (5+1+4+3+9+7+8+6) is 43.

i.e., 43 ÷ 3 gives 1 as a remainder.

∴ Remainder will be 1 when 51439786 is divided by 3.

We know that if a number is divided by 11, then remainder is difference between sum of even and odd digit places.

i.e., Remainder = 9 + 8 + 7 + 6 + 3 – 2 – 1 – 4 – 5 = 33 – 12 = 21

∴ 21 ÷ 11 gives 10 as remainder

∴ Remainder will be 10 when 928174653 is divided by 11.

We know that if a number is divided by 3, then remainder is remainder obtained by dividing sum of digits by 3. 

Here, sum of digits is 43. 

∴ 43 ÷ 3 gives remainder 1 

Hence, 

remainder will be 1 when 51439786 is divided by 3.

Clearly, for given condition which is, three whole numbers whose product and sum are equal, 1,2 and 3 satisfy.

Here, 1 + 2 +3 = 1 × 2 × 3 = 6

Let length, breadth, and height of the rectangular hall be l m, b m, and h m respectively.

Area of four walls = 2lh + 2bh = 2(l + b) h

Perimeter of the floor of hall = 2(l + b) = 250 m

∴ Area of four walls = 2(l + b) h = 250h m²

∴ 15000 = 2500h h = 6

Therefore, the height of the hall is 6 m.

Length of room, l = 5 m 

breadth, b = 4m 

height, h = 3 m 

White washing the room and the ceiling except floor to be made. 

∴ Area, A = lb + 2bh + 21h 

= lb + 2h(b + l) = (5 × 4) + 2 × 3(4 + 5) 

= 20 + 6(9) 

= 20 + 54 = 74 m² . 

Cost of white washing for 1 sq.m. is Rs. 7.50 

∴ Cost of white washing 74 sq. m. is ?

= 74 × 7.50

= Rs. 555.

31×5 is divisible by 3 

=> 3 + 1 + x + 5 is a multiple of 3 

=> 9 + x = 0, 3, 6, 9, 

=> x = -9, -6, -3, 0, 3, 6, 9, 

Since, x is a digit 

x = 0, 3, 6 or 9

(A) The area of the field ABGFEA is 7225m². 

28×6 is a multiple of 3 

2 + 8+ x + 6 is a multiple of 3 

=> 16 + x = 0, 3, 6, 9, 12, 15, 18 

=> x = -18, -5, -2, 0, 2, 5, 8 

Since, x is a digit = 2, 5, 8

Correct answer is (A) πr²θ/360°

24x is divisible by 6 

=> 2 + 4+ x is a multiple of 6 

=> 6 + x = 0, 6, 12 

=> x = -6, 0, 6 

Since, x is a digit 

x = 0, 6

Since 24x is a multiple of 3, the sum of its digits is a multiple of 3. Sum of digits of 24x = 2 + 4 + x = 6 + x

Hence, 6 + x is a multiple of 3.

This is possible when 6 + x is any one of these numbers 0, 3, 6, 9, and so on … Since x is a single digit number, the sum of the digits can be 6 or 9 or 12 or 15 and thus, the value of x comes to 0 or 3 or 6 or 9 respectively.

Thus, x can have its value as any of the four different values 0, 3, 6, or 9.

The heart beat results from a wave of electrical potential called the cardiac impulse, which originates from nodal tissue like sinu-atrial node (SAN), auricular ventricular node (AVN), bundle of His and Purkinje fibres. 

Functions : 

(i) SAN is located in the right auricle at the opening of the vena cavae. It is the part of the conducting system of heart. The stimulation arises initially in the sinu-atrial node. 

(ii) The AVN is located in the right auricle in the inter- auricular septum. It gives rise to bundle of His, a muscular bridge that conducts stimulation from the auricles to the ventricles. 

(iii) The bundle of His divides into two branches. The terminal branches of the conducting system are represented by a network of Purkinje fibres which convey stimuli to the myocardium.

Differences between Right ventricle and Left ventricle:

Karl Landsteiner reported for the first time ABO blood groups in human being. This grouping is based on the presence or absence of two antigens on the RBC's namely A and B. In a blood transfusion, the blood of a donor has to be matched with the blood of a recipient as transfusion of mismatched blood groups leads to agglutination of blood.

The two forms of lymphocytes are: B-lymphocyte and T-lymphocyte.

The average rate of heart beat is 72 times minute.

Functions of RBCs are: 

(i) Haemoglobin of RBCs readily combines with oxygen to form oxyhaemoglobin. In the tissues, oxyhaemoglobin readily gives up its oxygen, which is used for oxidation of food. 

(ii) RBCs also participate in transporting carbon dioxide from tissues to lungs. Carbon dioxide is carried by haemoglobin of red blood corpuscles to form carbamino-haemoglobin. 

(iii) Moreover, haemoglobin is an excellent acid base buffer which is largely responsible for maintaining the pH of blood.

Heamolysis is the destruction of RBCs.

Blood pressure : (i) The pressure exerted by the flow of blood on the elastic walls of the arteries is called blood pressure. 

(ii) The blood pressure is greater during the systole than during the diastole. 

(iii) The blood pressure is measured by the use of sphygmomanometer. 

(iv) In normal young person, the systolic pressure is 120 mm Hg and diastolic pressure is 80 mm Hg. 

(v) It is normally expressed as \(\frac{120}{80}\). 

(vi) The blood pressure varies with age. It is influenced by the rate of heart beat.

Because it connects various parts of the body and contains plasma and the formed elements such as RBCs, WBCs, blood platelets etc.

During blood circulation when both the atria and ventricles are in relaxed phase, it is called joint diastole.

A condition in which the blood doesn't have enough healthy red blood cells.

Anaemia results from a lack of red bloood cells in the body. This leads to reduced oxygen flow to the body's organs.

Symptoms :

• Dizziness, lightheadness, or feeling like you are about to pass out
• Fast or unusual heartbeat
• Headache
• Pain, including in your bones, chest, belly, and joints
• Problems with growth, for children and teens
• Shortness of breath
• Skin that’s pale or yellow
• Cold hands and feet
• Tiredness or weakness

It is the condition in which there is reduced number of erythrocytes with a reduced amount of haemoglobin. It is a deficiency disease caused by the deficiency of iron.

Hepatic portal system brings blood from the alimentary canal, pancreas and spleen to the liver.

The number of times the heart beats in a minute is known as pulse rate. It has been observed that the pulse beats at the same rate as the heart beats. Hence the average pulse rate is 72 beats per minute. 

The factors involved in maintaining the pulse pressure are as follows: 

(i) The amount of blood in the arteries. 

(ii) The cardiac output. 

(iii) The elasticity of the arterial walls. 

(iv) The viscosity of the blood.

Gold and platinum.

(i) Corrosion of aluminium is useful. A protective layer of aluminium oxide is formed on the surface of the metal which renders the metal passive and prevents is further corrosion.

(ii) Corrosion of iron is a serious problem. Every year large amount of money is spent to replace damaged iron and steel structure. Here, corrosion is a serious problem.