Explore topic-wise InterviewSolutions in Current Affairs.

Correct option is (C) 10/3
Here, a = 5, r = -1/2, |r| < 1

\(\therefore\) Sum to the infinity = \(\frac{a}{1-r}=\cfrac{5}{1+\frac12}=\frac{10}3\)

(a) Tight junction

(a) Smooth muscle

Correct Answer is: (a) Collagen

(c) Striped muscle

(a) Epithelia

(c) Haversian canals

(d) Bone marrow

(b) Fibrinogen

(c) Thrombocytes

Adipose tissue: 

• Adipose tissue is the group of fat cells. 
• It stores fats. 
• It releases energy while fasting.

Brown Adipose Tissue:

• Adipose tissue which contains abundant mitochondria are called brown adipose tissue. 
• It is used to warm the blood stream to warm the body.
• It produces heat by non-shivering thermogenesis.

Pseudostratified epithelial cells are columnar, but unequal in size. Although the epithelium is single layered yet it appears to be multilayered due to the fact that nuclei lie at different levels in different cells.

(b) Basement membrane

Simple epithelium: 

• It consists of a simple layer. 
• It helps in protection, absorption, filtration, excretion, secretion and sensory reception.

Compound epithelium: 

• It is multilayered.
• It provides protection against chemical and mechanical stresses.

Simple epithelium is a simple layered sheet of cells that covers the body surface or lines the body cavity

Types: 

1. Squamous epithelium: It is made of flattened cells with irregular boundaries. It is found in glomeruli, air sacs of lungs, lining of heart, blood vessels.

2. Cuboidal epithelium: It is made of cube like cells. It is found in kidney tubules, ducts and glands. It is important for secretion and absorption.

3. Columnar epithelium : It is made of column like cells. It lines the digestive tract. It is important for secretion and absorption.

4. Ciliated epithelium : It has cilia at the free end. It is found in bronchi, uterine tubes. It is helpful in propelling materials.

5. Glandular epithelium : Cuboidal or columnar epithelium specialized for secretion is called glandular epithelium. E.g., goblet cells and salivary gland.

Papaya plant is either unisexual or dioecious, i.e., male and female flowers are borne on separate plants. Only plants bearing female flowers will bear fruits.

Unisexual / Dioecious male and female flowers are borne on separate plants, only plants bearing female flowers will bear fruits. Monoecious (hermaphrodite)papaya plants bear fruit too.

Detailed Answer  : 

Papaya has both dioecious and monoecious plant,s bearing unisexual or bisexual flowers. They can occur in three sexual forms-male, female and hermaphrodites. A fruit is formed when fertilization occurs in the ovary of the female flower. So, if a female or a male plant is growing alone, it will produce flowers but it will not produce fruits as both male and female is required for fruit formation. However, hermaphrodite papaya plant will always bear fruits as their flowers contain both male and female parts.

Industrialised nations are collecting and patenting the genetic resources of under industrialised country like India. An American Company got patent rights on Basmati rice. Valuable biomolecules obtained from bioresources are patented and used for commercial purposes.

An inverted bell shaped age pyramid is obtained. The young or pre-reproductive age group individuals are less in number and both post-reproductive and reproductive stage are in the same level.

When the environment is favourable, the growth curve is J-shaped.

In nature, a given habitat has resources to support only a certain number of individuals of a population beyond which no further growth is possible. This limit is called carrying capacity (K).

The classes in Shanthinikethan not only CPC Honest Success Series teaches subjects but also handiwork’s. Here the importance is given to all round development of the students. The teacher student relationship is cordial and the teachers find out the student’s talent and encourage them to learn that subject.

Handiwork’s are also helpful to build their future and succeed in that particular field. If the students learn their talented subjects they would definitely gain skills. It is helpful in their future life. Thus Shanthiniketan helps and prepare the students for life.

In the evening boys play in the field.They play a variety games especially foot ball. After the game the boys return from the play fields. All the boys sit to meditate in silence for a short time.

The classes at Shantiniketan is completely different from the classes of other schools. In Shantiniketan the teaching is student or child centered. The students sit with their teacher in the open air under the trees. There is no classrooms. The group of 8 to 10 students have one teacher.

Very few books are’ used. Most part of learning is done through conversation. The students could ask the questions and clear their doubts. On the contarary in other schools the teaching is teacher oriented (centered). One teacher in the class should teach 50 to 60 students, many books and subjects.

Her subjects are compulsory whether the students like or dislike. The answer should be by hearted. Handiwork’s are very less and they were not given much importance. The students do not have freedom.

A day in the Ashram’ is the experience of C. F. Andrews while he stayed in the Ashram known as ‘Shanthiniketan’founded by Rabindranath Tagore, he was famous as ‘Gurudeva’. Shantiniketan was his dream school. He was one of the important educationists. All his ideas are practically applied in this school. It is one of the important internationally popular school.

1. The beauty of Shantiniketan is not found visibly. Its importance lies in its quality of education and the way of teaching. Irrespective of age all who have visited it, appreciate and feel its inner beauty Gurudeva says that all the students learned here never forgot their student life and they reached a very great height in future life. Our ex-Prime Minister Smt. Indira Gandhi was one of the students of Shantiniketan.

1. rich, poor 

2. tall, short. 

3. strong, weak 

4. soft, hard 

5. remember, remember

The birds in amloki grooves are the early risers with the boys in Shantiniketan.

The day begins before dawn, when the birds chirps in almoki groves.

When the Choristers are singing their morning hymns and they go around the Ashram, one can hear the voices. The beauty of the sound in the silent morning air and the sense of Joy and reverence which it brings, give peace to the soul.

b) the song of the choristers 

The boys spend their evening before they go to bed by telling fairy tales, recitation of short dramas, singing of Gurudeva’s songs and gatherings of different schools.

The Shantiniketan boys are famous for sports and games everywhere.

1. Can you speak Chinese? No I can’t. 

2. I must study well for the exam. 

3. May I borrow you pen? 

4. We should not watch TV so much. 

5. We must not buv that bag. It’s expensive. 

6. You should come to school in time. 

7. I need to work hard to complete the project. 

8. You may speak politely to others.

Observations of marks are 20, 20, 20, 20, 20, 20, 20.
All the observations are of same magnitude. Hence, standard deviation marks s will be zero, i.e., s = 0.

(i) Mean Deviation: The mean of the absolute deviations of a data from its mean is called mean deviation and it is denoted by MD.

(ii) Standard Deviation : Standard deviation is the positive square root of the mean of the squares of the deviations measured from the mean. It is denoted by ‘s’.

(iii) Coefficient of Variation : Coefficient of Variation is the percentage measure of standard deviation in relation to the mean., i.e., Coefficient of Variation = \(\frac{s}{x¯}\) × 100.

Hydrogen: Others are inert or noble gases.

Observations x: – 1, 0, 4
∴ Mean x̄ = \(\frac{−1+0+4}{3}=\frac{3}{3}\) = 1
Now, Σ|x – x̄| = 2 + 1 + 3 = 6
∴ Mean deviation MD = \(\frac{∑|x−x¯|}n=\frac{6}{3}\) = 2

Given :

6.8 g H₂O₂ in 100 mL water = 68 g H₂O₂ in 1 liter water.

Molar Mass of H₂O₂ = 34 g/mol. 

We know that 

Molarity = Number of moles of solute / Volume of Solution in L

Molarity = 68 g/34 g/mol = 2 mol in 1 liter = 2M.

Hence, Molarity = 2M

Measures calculated from standard deviation Mainly following are calculated from standard deviation.

1. Co – efficient of standard deviation:

It is a relative measure of standard deviation. It is calculated to compare the variability in two or more than two series. It is calculated by dividing the standard deviation by arithmetic mean of data symbolically.

Co – efficient of S.D.

Here Standard deviation = \(\frac{\sigma}{X}\times 100\)

2. Arithmetic mean

Co – efficient of variance. It is most popularly used to measure relative variation of two or more than two series. It should the relationship between the S.D and the arithmetic mean expressed in terms of percentage. It is used to compare uniformly, consistency and variability in two different series. 

Symbolically C.V = \(\frac{\sigma}{X}\times100\)

3. Variance:

It is the square of standard deviation. It is closely Related to standard deviation. It is the average squared deviation from mean whereas standard deviation is the square root of variance. Symbolically variance = σ²

The absolute measures of dispersion are :

• Range
• Quartile deviation.
• Mean deviation and
• Standard deviation.

Correct option is (b) \(\frac{x_H−x_L}{x_H+x_L}\)

Writing the measures of mistargets in ascending order :

15, 18, 20, 24, 25, 27, 32, 35, 36, 41

Here, n = 10

First Quartile :

Q₁ = Value of \(\left(\frac{n+1}{4}\right)\)th observation

= Value of \(\left(\frac{10+1}{4}\right)\) = 2.75 th observation

= Value of 2nd observation +0.75 (Value of 3rd observation – Value of 2nd observation)

= 18 + 0.75 (20 – 18)

= 18 + 0.75 (2)

= 18 + 1.50 = 19.50 mm

Third Quartile :

Q₃ = Value of 3\(\left(\frac{n+1}{4}\right)\) th observation

= Value of 3 (2.75) = 8.25th observation

= Value of 8th observation + 0.25 (Value of 9th observation – Value of 8th observation)

= 35 + 0.25 (36-35)

= 35 + 0.25 = 35.25 mm

Quartile deviation of measures of mistargets :

Q_d = \(\frac{\mathrm{Q}_{3}-\mathrm{Q}_{1}}{2}\)

Putting Q₃ = 35.25; Q1 = 19.50, we get

Q_d = \(\frac{35.25-19.50}{2}=\frac{15.75}{2}\) = 7.875 ≈ 7.88

Coefficient of quartile deviation = \(\frac{\mathrm{Q}_{3}-\mathrm{Q}_{1}}{\mathrm{Q}_{3}+\mathrm{Q}_{1}}\)

= \(\frac{35.25-19.50}{35.25+19.50}\)

= \(\frac{15.75}{54.75}\)

= 0.29

Correct option is (a) Mean Deviation

1. Positive correlation:

When two variables move in the same direction that is when one increases the other also increases and when one decreases the other also decreases, such a relationship is called positive correlation for example the relation between price and supply. Increase in the value of both variables:

2. Negative correlation:

When two variables change in different direction, it is called negative correlation for example relationship between price and demand when prices rise other things remaining constant, demand falls and when price falls demand rises.

Positive correlation.

-1 < r < + 1

1. Positive and negative correlation

2. Linear and non-linear correlation

3. Simple and multiple correlation.

According to Croxton and Cowden, ‘when the relationship is of a quantitative nature the appropriate statistical tool for discovering and the measuring the relationship and expressing it in a brief formula is known as statistics.

1.  When r = 0, It implies that there exists no relationship between two variables X and Y in other ways r = 0 shows the absence of relationship.

2.  r = 1, Shows that there is perfect correlation between two variables X and Y.

3.  r = -1, Shows that there is perfect negative relationship between two variables X and Y.

1. When correlation is perfect and negative than the value of r = -1.

2. When correlation is perfect and positive than the value of r = +1

3. When there is no correlation then the value of r = 0.

When two variables move in same direction such a relation is called positive correlation for example relationship between price and supply when two variable change in different direction it is called negative correlation for example relationship between price and demand.

The mother had worked hard to bring up her sons after the sudden death of their father and all her sons were fond of her.