Explore topic-wise InterviewSolutions in Current Affairs.

(i) Hydrilla plants are used for conducting experiment to prove O₂ is released during photosynthesis. They grow in water. 

(ii) Procedure for conducting experiment with hydrilla plants : 

(a) A few pieces of Hydrilla twigs are taken. 

(b) A wide mouthed funnel is kept in a beaker full of water. 

(c) Hydrilla pieces are placed placed inside the funnel. 

(d) A test tube filled with water is inverted carefully over the narrow end of the funnel. 

(e) The entire setup is kept in the sunlight for atleast 2 - 3 hours. Similar setup is kept in dark. 

Observation : It is noticed that large number of air bubbles are released from the twigs of hydrilla kept in sunlight. No such bubbles are observed in the set up kept in dark.

Correct option is B) The winds of hurricanes

Correct option is B) one of the most critical elements for human survival

Correct option is C) is transmitted

The branch of biology that deals with the study of heredity and variation is called genetics Gregor Johann Mendel was the first person to carry out experiment regarding the heredity of certain characters from one generation to another in a scientific manner. He worked mainly on the garden pea plant.

His observations regarding the occurance of contrasting characters in various generations of garden pea led him to interpret that these are controlled by units which he called factors. These factors are today know as genes. He is also know as the ‘father of genetics’.

Evolutionary relationships can be traced by studying fossils, by studying homologous and analogous organs, by comparing the embryo or of different animals and by comparing the DNA’s of different species.

Variation are differences that occur between the organisms of same species in spite of the same basic features.
Variation in species promotes survival of an organism in the changing environment by increasing the adaptability.

Planets are much closer to the earth and are seen as extended sources, so a planet may be considered as a collection of a large number of point size light sources, although light coming from individual point sized sources flicks but the total amount of light entering our eye from all the individual point sized sources average out to be constant thereby planets appear equally bright and there is no twinkling of planets.

Clear sky appears blue when sunlight passes through the atmosphere having the molecules of air and other fine particles whose size is smaller then the wavelength of visible light. These molecules and particular scatter the blue colour more strongly then the other colours of spectrum. As the wave length of blue colour is more, this scattered blue light enters our eye, so, the colour of sky appears blue to us during day time.

Baking soda does not allow milk to change to lactic acid which makes milk poor.

Correct option is C) adapted

Robert Boyle was a famous Anglo Irish scientist who transformed chemistry in the 17^th century. Till then, chemistry was confined to alchemy and mysticism. Alchemy was the study of how to change basic substances such as metals into other more valuable substances. Boyle made chemistry a science based on measurement. He defined elements, compounds and mixtures and he coined the new term ‘chemical analysis,’ a field in which he made several contributions. Robert Boyle is most famous for Boyle’s Law. It was the first of the gas laws linking the pressure of a gas to its volume. He established that electrical forces are transmitted through a vacuum, but sound is not. Boyle also stated that the movement of particles is responsible for heat. He was the first person to write specific experimental  guidance for other scientists, telling them the importance of achieving reliable results. He was indeed a ‘mighty chemist’. Robert Boyle is regarded as the first modern chemist, and is referred to as one of the founders of modern chemistry.

Correct option is: B. Bottom- up

Correct option is: D. Dynamic loading

The Insurer provides the coverage for the potential financial loss in lieu a fee or a consideration which is called the ‘Premium’. In an insurance contract, the risk is transferred from the insured to the insurer. For taking this risk, the insurer charges an amount called the premium.

Correct option is: B. 2

Reinsurance is a process whereby one entity (the reinsurer) takes on all or part of the risk covered under a policy issued by an insurance company in consideration of a payment of premium, or a form of an insurance cover for insurance companies.

● To spread the message of Life Insurance in the country and to mobilize and channelize the savings of the public at large for nation building. 

● Spreading awareness in rural areas lives may be insured at a reasonable cost or any valid point.

Correct option is: B. A reference once established cannot be changed

Provided by a group of networked bank branches where customers may access their bank account and perform basic transactions from any of the member branch offices.

A mechanism by which the person exposed to a potential risk arising out of events beyond his control transfers the financial loss in full or in part to the third party.

(a) The process where certain organisms excrete nitrogenous waste in the form of ammonia is known as Ammonotelism.

(b) The elimination of urea from an organism is termed as Ureotelism, and the animals that excrete their wastes majorly in various forms of nitrogen such as urea are called Ureotelic animals. Excretion in our body occurs through skin, kidneys, and lungs. They excrete toxic substances.

(c) Uricotelism is the process of elimination of nitrogenous wastes from the body in the form of uric acid. The organisms which excrete uric acid are called uricotelic organisms.

Correct option is: D. Both A and B

Steps for repairing of Punctured Tube: 

1. Loosen the wheel nuts. 

2. Raise the portion of punctured wheel by placing the jack at lift point. 

3. Remove the punctured wheel from hub. 

4. Keep the removed nuts safely with washer 

5. By using tube valve, release the remaining air from the tube 

6. Place the blunt lever to remove the tyre bed from the wheel or place the wheel on the tyre removing machine. 

7. Take out the tube gently by supporting the tube valve. 

8. Inspect the inner portion of tyre and check for pointed items, remove with the help of nose plier. 

9. Fit the valve back in the tube and fill the air. Check for leakage by placing the tube in water container. 

10. Mark the punctured area from where air is coming out. 

11. Dry off the punctured tube and rub the punctured place with fine grade emery paper/rasp/rubber file. 

12. Apply the cold patch adhesive solvent on and around the puncture area and allow it to dry for few minutes. 

13. Take out the cover from the cold parch and place centrally on the punctured portion of the tube in mini press unit and press the cold patch.

14. After repairing the puncture, again fill the air and check for leakage. 

15. Before fitting back tube in tyre, apply white powder (French- chalk powder) inside the tyre. 

16. Fit tyre back on wheel rim and see that this is fitted properly other wise use the tyre removing machine. 

17. Fix wheel back on the hub. 

18. Diagonally tighten the nut with specified torque. 

19. Fill the air of recommended pressure 

20. Remove the jack by lowering it.

Marcello Malpighi was an Italian biologist and physician who had a wide knowledge of both plants and animals, and made contributions to the scientific study of both. He founded the sciences of microscopic anatomy and histology. He studied animal tissues extensively for 40 years, using microscopes that he had made himself. Malpighi was the first person to see capillaries in animals. He discovered the link between arteries and veins that had eluded William Harvey. Malpighi was also the earliest person to observe red blood cells under a microscope. He is noted for his studies on the structure of glands. In his treatise De polypo cordis published in 1666, Malpighi explained blood composition, as well as how blood clots are formed. His research provided a foundation for later advances in physiology, embryology, and practical medicine.

Correct option is: C. ::

Correct option is: B. For loop

Correct option is: B. Class