Explore topic-wise InterviewSolutions in Current Affairs.

The change taken place by the involvement of human beings are called man made changes.

Yes. The formed new substance is completely different.

The changes are brought by nature are called natural changes.

Yes. It is also a reversible change.

The correct answer is  Yes .

Fibres are derived from plants, animals as well as chemicals.

The change that is brought about by nature itself is called a natural change.

The correct option is C) chemical change.

The correct option is D) It is a periodic change.

1. The water vapour emerges from the hot food and goes up. 

2. The plate covering the food item is in relative less temperature than the hot food.

3. Thus the more energetic molecules loose energy once they touch the cooler plate. 

4. As the molecules lose heat, they lose energy and slow down. 

5. They move closer to other gas molecules. 

6. Finally these molecules collect together to form a liquid. 

7. Condensation happens when molecules in a gas cool down.

(i) During a physical change, no new substances are formed. In a physical change,the chemical properties of a substance do not change. 

For example, when ice cube melts, water is formed. In this change, there is no new substance, but water is same both in ice and in water. 

(ii) A physical change is usually temporary and reversible in nature. 

For example, when water is heated, water vapours are formed, once water vapours are cooled, water can be obtained again. 

(iii) In a physical change, the chemical properties of a substance do not change. 

For example, when a piece of gold is melted, its chemical composition remains the same in the solid form and also in the liquid form. 

(iv) In a physical change, the physical properties such as colour, shape and size of a substance may undergo a change.

For example, cutting of vegetables and inflating a balloon are some examples of physical changes in which size and shape of a substance undergoes a change.

We notice the formation of large size crystals of sugar at the bottom of the beaker.

It is a physical change.

The events which repeat at regular intervals of time are called periodical events.

The fabric wasn’t made in a day. Many people toiled in order to make it. The farmer who grew cotton in his field worked hard for months through sun and rain. He picked cotton from each boll and gave it for spinning. Then someone else carded the cotton and spun it into long, uniform threads. The threads were dyed carefully so that they took on lovely colours. Thiruvalluvar’s wife and he then wove the threads together, putting in beautiful designs.

Thiruvalluvar was a great saint-poet who is loved and respected even now. People said . that he never got angry, never used bad words and never shouted at anyone. He was polite, calm and used a quiet tone even in the most infuriating situations.

Thiruvalluvar wove beautiful fabrics and saris, and sold them in the market to make his living.

Thiruvalluvar lived more than two hundred years ago.

was reduced – Transitive verb

Rohan’s fear was that Mrs. Groover might not believe him.

The answer is  (D) Comfortable and convenient

The answer is  (B) Trousers

The answer is (A) Two world wars

The rich, young man felt ashamed of himself after the saint-poet spoke to him and he decided there and then to give up his idleness and bad habits.

No, the rich young man did not succeed in making the saint-poet angry.

The rich, young man was sure that he could make Thiruvalluvar angry.

The answer is (D) Reformers

Interrogative sentence

softly – Adverb

anyone, someone, himself, thoughtless

– Ramakrishna Paramahamsa

1. True.

2. True.

3. True.

4. True.

Variation between individuals in DNA fragment sizes cut by specific restriction enzymes; polymorphic sequences that result in RFLPs are used as markers on both physical maps and genetic linkage maps. RFLPs are usually caused by mutation at a cutting site. 

Answer is D. 121

C. Population explosion

B. 18.14 crores

Answer is A. 102

1. False

2. True

3. True

4. True

6. False

7. False

The continuous and rapid rise in population in the country for an extended period is known as ‘population explosion’.

Illiteracy is a taboo on the culture of any society. So to eradicate illiteracy, the government has declared free and compulsory education at primary level for the age group of 6-to-14-year-old children, scholarships, free mid-day meals, girl education-related policies like Vidyadeep Scheme, residential schools for tribal people, adult education programmes, etc. Since 2009 the Right to Education (RTE) Act has been introduced and implemented.

The root cause of almost all problems of India is population explosion. Population explosion leads to certain man-made challenges such as pollution, congestion In residential areas, shortage of water and food as well as poor medical services, less educational opportunities, unemployment, poverty, terrorism, corruption, etc. Thus It is necessary to take steps to control population.

The criterion of a person’s poverty is decided on the basis of purchase power and level of his / her income.

The problems faced by the common people due to Inflation are:

• The increase In prices of essential commodities and other necessities is known as 1nflation.’
• It becomes tough for the middle-class people to earn their living.
• Living standards of people go down.
• Inflation has an adverse effect on people’s health.
• Inflation causes stress-related problems.
• Common man has to do without some essential commodities.
• It becomes difficult for the common man to make two ends meet.

In simple terms, ‘Corruption’ means lack of integrity and honesty or misuse of a position for dishonest gains. In short, the immoral and illegal behaviour towards a person is ‘corruption’.