Explore topic-wise InterviewSolutions in Current Affairs.

(i) Income of the consumer, (ii) Prices of related goods, and (iii) Tastes and preferences of the consumer.

Adolescence is the period between puberty and adulthood.

The characteristics of adolescence like brain development, rapid increase in the height and weight, growth of reproduction organs, increased efficiency of glands, etc., influence the physical and natural development of individuals.

Indian society, unfortunately, is the one that takes pride in the language and culture of their rulers and not in their own rich and vibrant history. The nabobs and babus that were in British Raj are still looked up and are respected. Though the truth is that these are the people that ensured English Queen's authority on our land. The reference in the story of Mulk Raj Anand makes it clear. He cites an example of how the nabobs and generals in English army are to wear the prestigious lion moustache, which is worn by resplendent rajas and maharajas of our land. This makes clear how we Indians take pride in being slaves of Britishers.

The author has mocked the society and its people who live in false pride of their community or lineage. How a fool who knows not of the practical matters and just to feed their image they go ahead auctioning their actual possessions. And such people are fooled by the smarter ones like Ramanand who bend but do not break. They alter their values according to the need of the situation but do not compromise entirely on their pride. They are the cunning ones who take advantage of fools who are stuffed with their worn out social status and forsake the present to protect the past. The author has ridiculed such people who weave their fall with their insensibilities.

a. To give one's word 

b. Carry out one's will 

c. To make ends meet 

d. To owe a loan 

e. Give a deaf ear to

Ramanand, the grocer and the money lender, is quiet cunning and possess a servile nature that is fit for his business of selling groceries and money lending. He never gets angry but prevails on his customers like Azam Khan with cleverness and by provoking the so called pride. It is also evident that Ramanand regards his customers as always right at least in principle. So he always keeps his business first and pride secondary. 

Azam Khan on the other hand is a victim of so called pride. He is still lost in the past glory of his forefathers. He is arrogant, full of anger and short sighted. He is ready to sell all his property for the sake of keeping Ramanand's moustaches down, which was suitable to his(Ramanand) class. Obviously Azam Khan is living in his past. He is impractical, short tempered and doesn't know what is good or bad for him.

Inclusion of dialogues in a story enables the writer to express things in their actual perspective. It allows him to include words and expressions which a writer normally would not write on his own. For example when Azam Khan gets angry he says to Ramanand: "You know what I mean, seed of a donkey!" or & "I tell you, turn that tip down" or "I shall wring your neck."

The theme of the story-mustachios has been introduced in a scientific but light manner. In the beginning, it seems that it might be an essay on how Indians take pride on their style of moustaches. It is only later the reader realises the significance of the introduction. The author wisely served the reader with the detail description of the object around which the whole story will revolve. How men rise and fall by altering and sticking to their status symbols, such as moustachios.

Ramanand and Azam Khan have a fixed view regarding themselves and each other. They are part of the social milieu that believes in the categorization of people on the basis of their moustaches. Ramanand belonged to goat class while Khan sahib belonged to tiger class moustache. They are both in harmony with the fact that they should not trespass into each other's boundaries. Ramanand scores over Azam Khan at the end of the story by turning up the tip of his goat moustache so that it looked like a tiger moustache. This enrages Azam Khan and he is tricked into selling all his property to Ramanand.

Ramanand is a good businessman. His business acumen is evident from the fact that he readily agrees to lower his moustache on Azam Khan'request. But he lowers only one tip of his moustache just to cleverly provoke Khan to bring in more of his property for mortgage. Unlike Khan he never gets angry and keeps his business interests above all his priorities.

A cross to analyse whether genotype of dominant individual is homozygous or heterozygous is called test cross.

On crossing with a recessive parent, if 50% of progeny have dominant trait and 50% have recessive trait then the plant is said to be heterozygous.

A true-breeding line for a trait is one that, has undergone continuous self¬pollination or brother-sister mating, showing a stability in the inheritance of the trait for several generations.

If a cross is done between the F1 hybrid organism and any one of the parent, it is called back cross. If a cross is done between F1 hybrid organism and the homozygous recessive individual, it is called test cross.

A true-breeding line for a trait is one that has undergone continuous selfpollination, showing a stability in the inheritance of the trait for several generations.

(i) Genotypes of member 4—XX or XX^h Genotype of member 5—X^hY and Genotype of member 6— XY 

(ii) The probability of first child to be a haemophilic male is 25%.

a) Brijmohan was not aware of the inheritance pattern for haemophilia. He thought that the disease shall be expressed among his grandchildren. 

b) Scientific attitude, deep understanding and practical application of the subject. She was focussed having convincing ability. 

c) Haemophilia is a sex linked recessive inherited disease. The gene is located on the X chromosome. Human male has only one sex chromosome (44A + XY). Rajiv is not haemophilic since he does not have the gene on his X chromosome. There remains no chance for him to pass on any haemophilic gene to the next generation. 

d) No there remains no fear if they are married, provided the girl is not a carrier of haemophilia. If the girl is a carrier, then the chance for the son to be haemophilic is 50%.

1) Humanity and responsibility towards a friend. She also used her knowledge to educate her friends. 

2) Polygenic inheritance or quantitative inheritance 

3) Height, weight, skin colour, hair colour, size of some organs, face form, intelligence etc of human beings are examples of quantitative inheritance.

The author said that the limit of magnanimity was over. He would punish him by putting him to death.

The author wanted to make up his lost prestige. So, he decided to be magnanimous and merciful to the fellow-traveller because these were the noblest virtues of mankind.

When the fellow-traveller sat on the newspaper, the author thought him to be foolish. He thought to kill him but he let him go.

The mosquito was skilful matador and the author was infuriated bull.

There were many charges against the mosquito. It was a vagabond and a public nuisance. He was travelling without ticket and sucking the blood of the author. So, justice demanded the award of death sentence.

The author said that the limit of magnanimity was over. He would punish him by putting him to death.

To avoid the sentence of death the fellow-traveller dodged the author and ran away.

Context : The writer could not kill the mosquito. Now, he started having kindly feelings for the mosquito. His sense of superiority began to disappear gradually. He felt that the mosquito had equal rights to be in the compartment. It had equal rights to live and enjoy. So the writer now decided to be generous and kind to the mosquito. 

Explanation : Now, it dawned on the writer that generosity and mercy were the greatest qualities of man. He felt that by being generous and merciful he could get back his honour lost in his fight with the mosquito. Thus, he could save his face. He felt how foolish and helpless, he was at that moment. He was an object of mockery. But by showing mercy and forgiveness, he could thus recover his lost honour. He came back to his seat. He would not punish the mosquito with death. He would not kill it. He had suspended his death sentence.

Context : The writer accepted his defeat in the encounter with the mosquito and developed an affection for him. He decided to withdraw the death sentence to maintain his moral dignity and honour. 

Explanation : In these lines the writer tells the mosquito his decision of not killing him because he has pardoned him. But he wants to make him aware that he does what he says. But now he has come to know him well and has developed an affection for him. St. Francis would have called him ‘Little Brother’. He can’t show such christian civility but he had a distant relationship with him, i.e. both of them are fellow travellers. Both have interested each other in the dark of night.

The author began to enter into the spirit of his fellow-traveller when he found himself, so helpless and stupid.

Context : The writer accepted his defeat in the encounter with the mosquito. Now he decided to pardon the mosquito and withdraw the death sentence. That was the only way to maintain his moral dignity and honour. 

Explanation : Now the writer has changed his attitude for the mosquito. He treats it on equal terms. He thinks that both are obliged to each other because both have entertained each other. Moreover, both of them are mortals. So he compares their life to a journey. None knows when and where this journey will end. Both have taken birth in this world, enjoy their life, wander hither and thither and ultimately die and this world becomes dark to them. This is the philosophic attitude of the writer about life.

When the fellow-traveller came and sat on his nose, he flicked it off.

Context : During his journey the writer was troubled very much by a mosquito. He warned it twice but useless. Third time he decided to kill it. But by its clever trick the mosquito saved itself from all cunning tactics of the writer. So, the writer was perplexed. 

Explanation : The writer accepted his defeat. He began to understand him and love him. He accepted that the mosquito also was not only an ordinary insect but it also had a personality of its own. It proved that it had the equal right like the writer to stay in the compartment. Now, the writer did not think himself superior to the mosquito because it had defeated him in the competition. Now the writer decided to be magnanimous. He remembered that magnanimity and mercy are the two noble qualities of man. Thus by developing these two qualities, he would be able to get back his lost prestige.

(a) Fossil fuels are used for generating electricity i.e., Coal is used in thermal power plants on large scale to produce electricity. 

(b) Coal and petroleum is also used in industries to prepare goods from raw-materials. 

(c) Petroleum is used for transportation. In vehicles petrol or diesel is used.

Context : The writer was travelling in a train. When the last of his fellow passengers had gone, he lit a cigarette, sat down and began to read again. It was then that a mosquito joined him in the compartment and sat on his nose. 

Explanation : The writer says that he struck the mosquito off his nose with a sharp light blow. The mosquito flew away and examined the entire compartment, went to see each window and then moved restlessly round the light. The author further says that the mosquito came to the conclusion that he (the author) was the most advantageous creature for him in the compartment, sitting in a corner. It came near the author and had a glance at his neck. 

The fellow-traveller was enjoying himself. So, the author thought that he had disturbed his repose.

The author developed a distant relationship with his fellow-traveller. He said that they were fellow-mortals. A mosquito was the fellowtraveller.

Context : The writer was travelling in a train. When the last of his fellow passengers had gone, he lit a cigarette, sat down and began to read again. It was then that a mosquito joined him in the compartment and sat on his nose. 

Explanation : The writer says that he struck the mosquito off his nose with a sharp light blow. The mosquito flew away and examined the entire compartment, went to see each window and then moved restlessly round the light. The author further says that the mosquito came to the conclusion that he (the author) was the most advantageous creature for him in the compartment, sitting in a corner. It came near the author and had a glance at his neck.

Context : The writer was travelling in a passenger train from London. When the train had left the outer ring of London, only the writer was left there. He was tired of a mosquito who troubled him again and again. Now, the mosquito sat on the back of his hand.

Explanation : The writer could not tolerate this bold mischief of the mosquito. He could not be generous any more. He had already warned it twice. The writer thought about himself that he was not an ordinary man. He must be regarded. But the little mosquito was disturbing him and tickling his body again and again. It was a stranger. So, he decided to punish it. He thought himself to be a judge and decided to condemn it to death as there were many charges against it.

Correct option is  C) 0

Correct option is (C) 0

2015 k = 2016 – 2016 = 0

\(\Rightarrow\) \(k=\frac0{2015}=0.\)

Correct option is  D) – 9

Correct option is (D) – 9

\(\frac{x-4}{7}-\frac{x+4}{5}=\frac{x+3}{7}\)

\(\Rightarrow\) \(\frac{5(x-4)-7(x+4)}{35}=\frac{x+3}{7}\)

\(\Rightarrow\) 5x - 20 - 7x - 28 = 35 \(\times\frac{x+3}{7}\)

\(\Rightarrow\) -2x - 48 = 5x + 15

\(\Rightarrow\) 5x + 2x = -48 - 15 = -63

\(\Rightarrow\) 7x = -63

\(\Rightarrow\) x = \(\frac{-63}7\) = -9.

Bishnoi community in Rajasthan.

Correct option is  A) 3/9

Correct option is (A) 3/9

Let the fraction be \(\frac xy.\)

Given that denominator (y) is 6 more than the numerator (x).

\(\therefore\) y = x+6   _________(1)

Also \(\frac{x+3}y=\frac23\)

\(\Rightarrow\) 3x+9 = 2y

\(\Rightarrow\) 3x+9 = 2(x+6) (From (1))

\(\Rightarrow\) 3x - 2x = 12 - 9 = 3

\(\Rightarrow\) x = 3

Then from (1), we get

y = x+6 = 3+6 = 9

\(\therefore\) Given fraction is \(\frac39.\)

(i) Social problem—as its construction displaces large number of tribals and local peasants without proper compensation and rehabilitation. 

(ii) Economic problem—such projects need lot of money for the setup or construction without much of out-put or benefit. 

(iii) Environmental problem—the construction causes deforestration and loss of biological diversity.

Let the required number be x.Then,

= 2x + 4 = (26/5)

Transposing 4 to RHS and it becomes -4.

= 2x = (26/5) – 4

= 2x = (26 – 20)/5

= 2x = 6/5

Multiplying both side by (1/2)

= 2x × (1/2) = (6/5) × (1/2)

= x = 3/5

∴ The required number is 3/5

Tehri dam on river Ganga and Sardar Sarovar dam on river Narmada.

Let the required number be x.Then,

= x + (x/2) = 72

= (2x + x)/ 2 = 72

= 3x/2 = 72

Multiplying both side by (2)

= (3x/2) × (2) = 72 × 2

= 3x = 144

Again, multiplying both side by (1/3)

= 3x × (1/3) = 144 × (1/3)

= x = 48

∴ The required number is 48

Carbon dioxide, water, oxides of nitrogen and oxides of sulphur.

A Direct Current (DC) is a constant value of current which does not change with the time. It flows in one direction only, that is from positive to negative. The current here does not change its direction at all. It is always from positive terminal to negative terminal. 

Disadvantage of Direct current: 

Generally, the electricity is produced in a power plant which is far away from the main city. To supply the electricity to houses we have to transport it into the city. Electricity is transported through wire. Now in the previous chapter you have studied about Joule's law of heating. If we transport electricity in form of Direct Current through wires, a major portion of the electricity is already lost and wasted in form of heat which will cause nothing but loss. This is the major disadvantage of the Direct Current. It is prevented by transporting Alternating Current instead of direct current. Which does not really have heating problem.

Let the required number be x.Then,

= x + (2x/3) = 55

= (3x + 2x)/3 = 55

= 5x/3 = 55

Multiplying both side by (3/5)

= (5x/3) × (3/5) = 55 × (3/5)

= x= 11 × 3

= x = 33

∴ The required number is 33

Mining causes pollution because of the large amount of the slag which is discarded for every tone of the metal extracted.

Let the number required is x

According to the question we can write as

(4/5) x-10 = (2/3) x

On rearranging,

(4/5) x-(2/3) x = 10

Now taking the L.C.M of 3 and 5 is 15

(12x-10x)/15=10

On cross multiplication,

2x=150

x=150/2=75

So the required number is 75