Explore topic-wise InterviewSolutions in Current Affairs.

Schools have to maintain a health environment. This helps in the children keeping good health. The classes and the surroundings must be kept clean. Students are the future citizens of this country. If health education is imparted from school level it will be easy for the students to maintain cleanliness when they grow up and become citizens of the country. People have to live a healthy life without any disease and illness. Only then the country will become strong. So health education is very necessary for students in schools.

(d) Healthy body, concentration of mind and social security.

1. Chimneys 

2. Hand pump 

3. Left 

4. Carbon dioxide, Oxygen

Various air pollutants are carbon dioxide, carbon monoxide, sulphur dioxide, fluorides, smoke, ozone, hydrogen chloride, ammonia, pollen and microbes, pesticides, oxides of nitrogen, dust, iron-filings etc.

According to Locke, “Healthy mind can reside only in healthy body”. In the words of Mary Backer, “National prosperity depends upon the best human beings”.

“Health is the state of complete physical fitness and mental well-being and not merely the absence of disease or infirmity”. Health is related with the healthy community environment. Community is formed of the individuals and an individual is a unit of the society. The society can be healthy only if its members are keeping good health and they live in healthy environment— external and internal. Cleanliness is the best means to promote good health. It is the man who adopts all means to keep the environment clean and he removes all health hazards.

He attempts to keep not only the surroundings clean but also to develop the natural beauty. The environment which includes climate, temperature, social and cultural factors, affects the physical fitness of a person. The interaction between man and his surroundings is very important. The basic aim for man is prevention of diseases through improvement in environments through better housing, better ventilation, pure water supply and removal and disposal of refuse and sewerage system.

Correct Answer is: (d) Health.

Effects of Noise Pollution:

1. It can damage heart, increase blood cholesterdl level and blood pressure too. 

2. It dilates the cerebral blood vessels resulting in headache. 

3. Continuous exposure to noise pollution may lead to deafness. 4. It may cause many physical ailments like growth of ulcer, paralysis, insanity etc. 

5. Mental tension resulting from noise pollution may lead to lack of concentration. 

6. Psychological effects of noise pollution are stomach disorder, reduced hormonal secretions etc. 

7. Noise pollution may develop the habits of intolerance, and stress. As a result, social relations become bitter.

Toilets should be kept neat and clean by getting them washed with disinfectants because dirty toilets become the cause of many infectious diseases.

Water from the initial two or three rains is polluted due to presence of dust particles in it. After two or three rounds the rain water becomes pure. It was a practice in Rajasthan to collect this water in the tanks to be used for the whole year. This practice of collecting the rain water by different means can solve the problem.

Air pollution: Air is a mixture of various gases in a particular ratio. Whenever the ratio of these gases becomes imbalanced or if there is an addition of particular substances, foreign material or gases in the air, which may be harmful, the air is said to be polluted. Various air pollutants are carbon dioxide, carbon monoxide, sulphur dioxide, fluorides, smoke, ozone, hydrogen chloride, ammonia, pollen and microbes, pesticides, oxides of nitrogen, dust, iron-filings etc.

Water pollution: Water becomes polluted when it changes in its quality and composition directly or indirectly by man’s activity, making it less suitable for drinking, domestic and other purposes.

Noise pollution: When there is too much noise in the environment it is harmful for human hearing. Noise pollution may be caused by industries, horns of vehicles, music systems and construction activity.

Health is related with the healthy community environment. Community is formed of the individuals and an individual is a unit of the society. The society can be healthy only if its members are keeping good health and they live in healthy environment— external and internal. Cleanliness is the best means to promote good health. It is the man who adopts all means to keep the environment clean and he removes all health hazards. He attempts to keep not only the surroundings clean but also to develop the natural beauty.

Good environments are useful for personal health. Open air, well ventilated room, greenery and open space lead to better respiration and better digestion. Suffocation, dirt, polluted air etc. decrease the functional capacity of the human body. Happy social environment inspires and motivates the human mind to act efficiently. On the other hand domination, confrontation and tension deteriorate the mental health leading to physical weakness. Lovable atmosphere at home, in neighbourhood, at office, at social gatherings add to the zest and zeal in life.

correct option is B) Early June

(a) Air pollution.

The answer is (c) Sustainable development does not consider the view points of stakeholders

Involvement of all the stakeholders is essential for the sustainable development of any programme hence option c) is a wrong statement.

The answer is (c) Ganga Action Plan

The Ganga Action Plan was, launched on 14 Jan. 1986 by the then Prime Minister of India Shri Rajeev Gandhi, with the main objective of pollution abatement of the river Ganga, to improve the water quality by interception, diversion, and treatment of domestic sewage, and to identify grossly polluting units to prevent.

The answer is (d) (i), (iii) and (iv)

According to the Tamil Nadu Local Government Act passed in 1994, the following functions to be performed as voluntary functions by the local governments.

• Maintenance of street lights in the villages 
• Maintenance of markets and fairs 
• Implantation of trees 
• Maintenance of play grounds 
• Maintenance of parking vehicles, slaughter houses and cattle sheds 
• Control over places of exhibition.

One district Panchayat is constituted for every 50,000 people and the ward members are directly elected by the people. The Chairman is elected from one among its members and their term is 5 years.

The junction between neurons is called synapse.

Unisexual flowers that contain only androecium are called male flowers.

At synapse, the electrical signals are converted into chemicals that can easily cross over the gap and pass on to the next neurons where it again converted into electrical signals. In this way, the impulse is transmitted from one neuron to another.

Unisexual flowers that contain only gynoecium are called female flower.

The third whorl of a flower is androecium. This is the male reproductive part of the flower.

The fourth whorl of a flower is gynoecium. This is the female reproductive part of the flower.

a) Pitutary gland is associated with brain 

b) Pancreas secretes digestive enzymes as well as hormones 

c) Adrenal gland is associated with kidneys

 d) Testis is present in males but not in females

In most cases when organisms die, their bodies decompose and become lost. 

But every once in a while, the body or at least some parts of the body may be in an environment that does not decompose completely.  

It is through such preserved traces of living organisms that we get fossils. 

For example: If a dead insect gets caught in hot mud, it will not decompose quickly, the mud will eventually harden and retain the impression of the body parts of the insect.

Fossils may be defined as the remains of the organisms which have been preserved in the form of molds or cast in rocks etc. since prehistoric ages. 

When a plant or an animals die, their remains fall on the ground. Over a period of time, their body gets covered by sediments brought by rivers, winds etc. These sediments keep on getting accumulated for over hundreds of years and when that land gets eroded, the fossils can be seen clearly. Thus, the process of accumulation of dead remains of plants and animals for over hundreds of years results in the formation of fossils. There are two components to this estimation of age of fossils. 

They are direct traces of evolution from the geological past. they also help in determining the past climatic conditions and the variations that have occurred in animals over the time. 

Thyroxine and Follicle Stimulating hormone.

(d) All of above

Soaps are formed by saponification of simple esters.

(C) total stem parasite

 Due to lanthanoid contraction, the atomic rad of 4d and 5d transition series elements are almost same.

Velocity is defined as the rate of displacement. Acceleration is known as the rate of change of velocity.

Organisms reproduce to perpetuate their race and maintain their species.

Correct Answer is: (C) Total stem parasite 

Cuscuta is a complete stem parasite as it depends for both water and sugars from the host plant.

• Yeast requires energy for its growth and cell division. 
• Water does not provide required energy whereas sugar provide energy hence yeast multiplies in sugar solution.

Yeast is a unicellular fungus hand fungi have a saprophytic mode of nutrition. This means they cannot produce their own food but require an external source of carbon and energy. Therefore, it cannot grow in water as water does not have any carbon or energy source required for their growth, while it can grow in sugar solution, where it ferments sugar to produce energy and will have a carbon source for growth. Hence, colonies of yeast can be observed in sugar solution but cannot be observed in water.

V_A = 54 kmh^-1

V_B = – 90 kmh^-1 (north direction is chosen as positive)

V_BA = V_B – V_A

= – 90 – 54 = -144 kmh^-1

= – 40 ms^-1 

Members of same species are capable of interbreeding the same species by the similarity in their body design and other physical features. 

Some flowers of cucurdita, pumpkin and bottle gourd set fruits, where as other flowers fail to develop fruit. Those flowers which ripened into fruits were pollinated. Those flowers underwent fertilization and thus produced fruit whereas the other flowers were not fertilized and so they did not produce any fruit.

The correct option is B) Potentiometer.

The EMF of a cell measured by a potentiometer accurate.

Correct Answer is: (D) All of these

Lotus, water lily, hydrilla, valisineria, trapa, crow foot etc. Hydrophytes are plants that can survive and live only in an aquatic environment like fully in water or wetlands.

Copying of DNA occurs during cell division.

The distance covered in unit time is called average speed.

V_avg = (x(t₂) - x(t₁))/(t₂ - t₁)

The speed at any instant of time is called instantaneous speed.

V_inst = Δt → 0(Δx/Δt)

DNA and RNA are the two nucleic acids present in the living cells.

Deoxyribo Nucleic Acid.

Copies of DNA are formed and hereditary information is passed on from one generation to the next.