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CVV stands for Card Verification Value. This number is vital for completing online transactions and should never be shared with anyone. The CVV number is generated by debit card issuers (banks or other financial institutions) based on the following details:
 

A card verification value or a CVV number is a 3-digit code printed at the back of a credit or a debit card. Also known as card security code or card verification code, it acts as an additional security layer protecting your data during online transactions or card swipes at POS machines.

The CVV code is distinct from the card’s PIN and is required while making online transactions. Cardholders must protect their CVV and not share it with anyone to avoid falling prey to cyber frauds.

Hey

The same happened with me. I was depressed about my boards. But my mom said that "Don't feel depressed because what you have learn you have to answer that". after that i played some mobile games and outdoor games which changed my mood and my exam went very well. So don't take any wrong step when depressed. Just feel refreshed and you will BOOM your coming day.

All the best. 

Bye

King Philip II (Spanish: Felipe II) of Spain, also known as Philip the Prudent or Philip II of the House of Habsburg, was unarguably the most important ruler in Spanish history. It was under his reign that Spain reached the height of its influence and power, and also of its artistic, literary, and musical excellence. As a result, those years are often referred to as the ‘Golden Age’. He was also named the King of Portugal, King of Naples, Duke of Milan, and lord of Seventeen Provinces of Netherlands at various points of his life. For a brief period, he became the jure uxoris King of England and Ireland through his marriage to Queen Mary I. As a young boy, he grew up studious, grave, and mature beyond his years; his formal education and military training receiving equal attention. At the age of 16, his father made him the Regent of Spain, and in the ensuing years he would be the sovereign of a massive empire that would extend to every continent known to contemporary Europeans, leading to the coining of the expression, “the empire on which the sun never sets”. A fervent Roman Catholic, he launched a largely unsuccessful militaristic campaign against the Protestant England in the later years of his reign. In comparison, his endeavours against France and the Ottoman Empire turned out more productive. The islands of Philippines were named so in his honour.

The French king Charles V (1337-1380) ruled from 1364 to 1380. He skillfully governed France during a critical phase of the Hundred Years War.

Son of John II and Bonne of Luxemburg, Charles V was born at Vincennes on Jan. 21, 1337. He was the first heir apparent to the crown of France to bear the title Dauphin. Although nothing is known of his education, his later activities as a patron of the arts, theoretician of monarchy, and founder of the royal library at the Louvre indicate an early interest in learning. In 1350 Charles married his cousin Jeanne de Bourbon.

Charles was born, grew up, and reigned in the shadow of the great Anglo-French conflict called the Hundred Years War (1337-1453). When he was 16, Charles was made Duke of Normandy by his father and was thus entrusted with one of the most vulnerable areas of warfare. At the age of 19, on Sept. 19, 1356, Charles with his father and two younger brothers led the French army, which was cut to pieces by the English at Poitiers. During the battle John II was taken prisoner and held for ransom. Charles, lacking power and financial resources, had to assume the office of regent during his father's captivity, which lasted until 1360. During this period Charles weathered the threat of an English invasion and, faced with domestic discontent, put down a number of internal revolts, among them the Jacquerie, a peasant uprising. Only his astute political judgment and diplomatic skill saved the crown of France. With the Treaty of Brétigny in 1360 he arranged the terms of his father's ransom and established a temporary truce with the English.

When Charles became king on his father's death in 1364, his experience as regent had prepared him to take on his first great task—undoing the disastrous results of the political ineptitude of his father and grandfather. Although he was not a good general and was always in ill health, he devoted intense energy to ruling. He chose able advisers and was fortunate in securing a number of effective military commanders, including Bertrand du Guesclin, to counter the continuing threat from England. Charles resumed the war in 1369, and by his death in 1380 he had fought the English to a standstill.

Apart from his activities against the English, Charles's last years were spent in strengthening the defenses of France and organizing matters of law and finance. For the first time since the death of Philip V in 1314, France had an effective and intelligent ruler. But Charles's early death on Sept. 16, 1380, brought far less able men to the throne, kings who would preside over even greater defeats at the hands of the English and who would witness the further disintegration of French society.

The correct option is: (a) Fluoride

Explanation:

Consumption of high concentration of fluoride causes mottling of teeth or fluorosis.

The correct option is: (d) only 4

Explanation:

Silicosis is a chronic lung disease caused by breathing in tiny bits of silica dust.

The correct option is: (b) Sodium azide

Explanation:

Sodium azide is used in airbag, used for safety of car driver. Under room temperature, sodium azide is a stable compound. However, when heated by an impulse it disintegrates to produce sodium and nitrogen. It only takes about 50-100 grams sodium azide to produce enough nitrogen gas to fill a normal airbag for driver.

The correct option is: (c) to make Soap

Explanation:

Sodium stearate is a typical example of detergent or soap. It contains a long hydrocarbon tail and a carboxylic acid head group.

The correct option is: (d) only 2

Explanation:

Glycerol is used as softening agent in baked goods, stabilizers in ice cream. As a lubricant for heavy machinery and for preparation of soaps. At one time its largest single use was as automotive antifreeze. Methanol and ethylene glycol have replaced, it for this.

Its light brown colour helps it to hide in dry grassland when it hunts for prey.

Also it can absorb all the colours but can't absorb the brown colour and reflect it.

Maltose is the a disaccharide which is formed by the linkage of alpha 1,4 glucose molecules. Amylase is a enzyme which helps in the digestion of the starch. It acts on the glycosidic bonds of the maltose and converts into simpler compounds. It helps in the hydrolysis of this bond. It can change maltose to monomer unit of the glucose.

So, the correct answer is option B.

Correct option (C) Distant

Explanation: 

Far off : 

It can't be used in place of 'aloof' as far off' means long-long ago. Hence, incorrect alternative . 

Introvert : 

It means 'self-centred', Hence, It is an incorrect alternative. 

distance : 

This is an appropriate word because one of the meaning of 'aloof' is distant also while keeping distance between two nouns. 

Depressed : 

(it means 'hopeless') Hence, quite irrelevant. 

Correct option (C) For and Against a thing

Explanation: 

Good and Evil 

This is a wrong interpretation. 

Former and Latter : 

Wrong interpretation. 

For and against a thing. 

Appropriate option as it really suits the Idiom ins and outs. 

Foul and Fair : (by hook or by crook) This is an inappropriate option. 

Correct option (A) Lively 

Explanation: 

Lively : Correct synonym to 'sprightly' as both means, 'someone dashing/energetic/enthusiastic'. 

Beautiful : (Irrelevant) 

Sportive : (Irrelevant) 

Intelligent : (Irrelevant)

Correct option (C) Both the sentences can be made correct by interchanging the underlined words.

Explanation: 

Sentence 1 is correct :

This option is wrong because the word 'ingenuous' means 'frank and simple' which is inappropriate. 

Sentence 2 is correct : 

This option is also wrong because the word 'ingenious' means 'clever or prudent' and this is inappropriate. 

Both the words, i.e. 'ingenuous' and 'ingenious' if interchanged together respectively, it really makes both the sentences meaningful. Hence, appropriate option. 

Both the sentences can't be interchanged. 

This is an incorrect option because words have been misinterpreted together. 

Incorrect option. 

Correct option (D) Both the sentences 1 & 2 are incorrect 

Explanation: 

Only 1 is correct :

Inappropriate answer because sentence 1 can't be correct using 'practise' as it is a verb, whereas the required word should be a noun. 

Only 2 is correct : 

Sentence 2 is also wrong because the word 'practice' is wrongly used as a verb. It should be a verb like 'practise'. Hence, incorrect answer. 

Both the sentences 1 and 2 are correct. 

This is not relevant. 

Both the sentences 1 and 2 are not correct. 

Correct option, if both the words, i.e. 'practice' and 'practise' are interchanged respectively, it really makes a meaningful sentence. 

Correct option (D) Foolish

Explanation: 

Wicked : It is almost a synonym to 'Astute' 

Impolite : Irrelevant because it is the antonym of 'polite'. 

Cowardly : Irrelevant as it is the opposite of 'bravely'. 

Foolish : (It's the correct antonym of 'Astute' which itself means 'clever, shrewd'. 

Luxurious : (Plush) 

Something full of all 'amenities' making life 'cozy' and 'snug'. 

Delicious : Irrelevant as it means 'something very tasty.

Comforting : 'Irrelevant' as it means 'giving necessary comforts', whereas 'Plush' means more than comforts. 

Tasty : (Irrelevant) It means 'delicious'

Hello

Name ....

Date...

Health Camp

This is to inform the student that team of expert doctors is going to hold eye operation health camp on (date.... from time....) at the school. Apart from eye check-up, children in the age groups will be administered Tibetans attending the free eye camp were evaluated for vision (refractive error), eye problems and those requiring surgery especially cataract were advised surgery. Student who wish to be eye operation must give consent letters signed by parents to their respective class teacher latest by (date...).

Name ....

The correct option is: (d) None

The correct option is: (b) Dot per sq. inch

The correct option is: (c) 1 and 3

The correct option is:(c) information

Liquid and Vapours 

An ion is a charged atom or molecule. It is charged because the number of electrons do not equal the number of protons in the atom or molecule. An atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

Examples of Ions 

alpha particle He²⁺, hydroxide OH^-

Rancidity: It is defined as chemical decomposition of oils and fats is called rancidity. It spoils food materials that makes difficult for consumption.

For Example: Potato Chips when kept in air for a long time gives unpleasant smell and bad taste.

Mitosis is a process of asexual reproduction in which the cell divides in two producing a replica, with an equal number of chromosomes in each resulting diploid cell.  

Meiosis is a type of cellular reproduction in which the number of chromosomes are reduced by half through the separation of homologous chromosomes, producing two haploid cells.

The movement of water through a column of soil is called percolation. Percolation is important for two reasons. First, percolating water is the only source of recharge of ground water which can again be used through well for irrigation. Second, percolating waters carry plant nutrients down and often out of reach of plant roots (leaching). Percolation is dependent on rainfall.

Permeability indicates the relative ease of movement of water within the soil. The characteristics that determine how fast air and water move through the soil is known as permeability. The term hydraulic conductivity is also used which refers to the readiness with which a soil transmits fluids through it.

Difference Between Nationality and Citizenship

The correct option is: (d) 4 3 2 1

Explanation:

Plague is a deadly infectious disease, caused by the enterobacteria Yersinia pestis. Until 2007, plague, yellow fever, and cholera were the three epidemic diseases reported to WHO. 

AIDS is caused by human immunodeficiency virus. Baldness can be caused by a fungus Microsporum audouinii, a common cause of ringworm and associated hair loss. Malaria is mosquito-borne infectious disease of humans caused by protozoa of genus Plasmodium.

The correct option is: (d) Neither 1 nor 2 

Explanation:

ELISA (Enzyme-linked immunosorbent assay) is an important test for diagnosing viral diseases like AIDS (caused by HIV). Majority of the human beings are Rh+ while very few are Rh–.

The correct option is: (a) 1 and 3 are correct

The correct option is: (c) 3 only

Explanation:

Dengue is a viral disease transmitted through mosquito. Fever, headache, pain in joints, back muscles and eyeballs, skin rash for a few days, bleeding from nose and gums are some of the symptoms of the dengue fever. 

Yes, ions can only conduct electricity when they are able to move. 

Ions in a crystal are locked in place. While one might imagine that electricity could flow from one ion to another, that would require some room on the ions, especially the anions, to accept the electrons in the first place. In general, the anions are already full up with electrons (having achieved an inert gas electronic configuration). So there is no room to inject electrons into the orbitals of the anions, so there is no way for the electrons to start their journey from one side of the ionic solid to the other. 

Ionis in water are an entirely different matter! The cations generated at the anode can move to the cathode where they can pick up electrons, and that anions generated at the cathode can move freely through the solution to the anode where they drop off their electrons.

The correct option is: (c) 1 4 2 3

Explanation:

Adrenalines are secreted in the situations of exercise, fear or any kind of dangerous situation. Oestrogens are steroid hormones or female primary sex hormones. Insulin is responsible for the metabolism of sugar in the body. Pheromones are the compounds which are secreted generally from insect; go out to affect the other insects. Some of the pheromones include alarm pheromones, food trail pheromones, and sex pheromones.

(b) A chemical whose discovery ultimately won the scientists the 2004 Nobel Prize in Chemistry.

Explanation:

Aaron Ciechanover, Avram Hershko and Irwin Rose has been awarded the Nobel Prize in Chemistry 2004 for “...helping to understand how the human body gives the 'kiss of death' to rogue proteins to defend itself from diseases like cancer” (Reuters, 6 October 2004). These scientists—the former two from Israel, the latter from the US — discovered ubiquitin-mediated protein degradation. Knowledge of ubiquitin-mediated protein degradation offers an opportunity to develop drugs against cervical cancer, cystic fibrosis and other diseases.

(b) Scattering of blue light by water molecules.

Explanation;

Water molecules scatter blue wavelengths by absorbing the light waves, and then rapidly remitting the light waves in different directions. That is why there are mostly blue wavelengths that are reflected back to our eyes.

The correct option is: (b) 1, 3 and 4 only

Explanation:

Except option (2), all are applications of capillary action. One would not be able to consume soft drink, if there is no atmospheric pressure, i.e., in vacuum.

Answer given below:

https://bit.ly/2LgMQ2r

The correct option is:(d) 1 and 2

Explanation:

A dwarf planet is a planetary-mass object that is neither a planet nor a satellite. More explicitly, the International Astronomical Union (IAU) defines a dwarf planet as a celestial body in direct orbit of the Sun that is massive enough for its shape to be controlled by gravitation, but that unlike a planet has not cleared its orbital region of other objects.Point 3 refers to asteroids

The correct option is:(b) 4 and 5 only

Explanation:

Nirbhay is a long-range, subsonic cruise missile being developed in India by Defence Research and Development Organisation. The missile has a good loitering capability i.e., it can go round a target and perform several manoeuvres and then re-engage it. Its first trial on 12 March 2013 from Chandipur, Odisha was failed. Brahmos is a supersonic cruise missile, while ‘Lakshya’ is an Indian pilot-less target drone system. Kirby's technology is not inspired by it. It is a “treetop” missile because it can flyover or around hills, can fly at a very low altitude and avoid detection.

The correct option is: (c) Both 1 and 2

Explanation:

NASA has joined the European space Agency’s (ESA’) Euclid mission, a telescope designed to investigate the cosmological mysteries of dark matter and dark energy. Euclid is a medium –class (“M–class”) mission and is part of ESA’s “Cosmic Vision”, 2015–2025 scientific program.

The correct option is: (b) 2 and 3 only

Explanation;

Cookies can be used to maintain data. They can be used to track internet user’s web browsing as well.

The correct option is:(b) 2 and 3

Explanation:

Data rates over Ethernet can be up to 100 gigabits per second. Ethernet has a good degree of compatibility.

The correct option is:(a) 1 and 2 only

Explanation:

‘Ramjet’ is also referred to as a flying ‘stovepipe’ or an athodyd. Ramjets are frequently confused with pulsejets, which use intermittent combustion but Ramjets employ a continuous combustion process. They can not produce thrust at zero airspeeds. They are also confused with ‘Scramjets’, which are a similar system designed for higher speeds, using supersonic flow.

The correct option is:(c) 1, 2 and 3

Explanation:

ISRO space vision 2025 includes satellite based communication and navigation systems mainly for rural connectivity.

The correct option is: (c) angina pectoris

Explanation:

Angina pectoris is the medical term for chest pain or discomfort due to coronary heart disease. It occurs when the heart muscle doesn’t get as much blood as it needs. Angina usually causes uncomfortable pressure, fullness, squeezing or pain in the centre of the chest. 

The correct option is: (a) activity of the sweat glands

(d) germination of seeds inside the fruit while it is still on the plant parent tree 

Explanation:

Viviparous plants produce seeds that germinate before they detach from the parent plant.