Science and technology

Q.1 Which one is the only movable bone in the human skull        A.Maxilla        B.Vomer        C.Mandible        D.Lacrimal bone Answer:-C Q.2 On which year the disaster of space shuttle Columbia happened in which accident Kalpana                  chawla died       A.2001       B.2003       C.2005       D.1998 Answer:-B Q.3 The filament of an electric bulb is made of        A.Iron        B.Tungsten        C.Graphite        D.None of the above Answer:-B

Q.1 Which of these has the highest calorific value? A. Rubber B. Hydrogen C. Coal D. Plastic E. Wood Explanation:- When fuels are burnt, heat is produced. The amount of heat produced by different types of fuels on burning is expressed in terms of calorific value. Calorific value of a fuel may be defined as the amount of heat produced on complete burning of 1 gm of fuel. S.I. unit of calorific value of fuels is kilojoule per gram (KJ/g). For example, when one gram of wood is burnt completely it produces 17 kilojoules heat. Therefore, the calorific value of wood is 17 KJ/g. in similar manner, when 1 gm of kerosene oil is burnt completely it produces 48 kilojoules heat. So, the calorific value of kerosene oil is 48 KJ/g. the calorific value of different types of fuels is given in following table. Table of calorific value of fuels Serial No. Fuel Calorific value 1. Hydrogen 150 KJ/g 2. Methane 55 KJ/g 3. LPG 50 KJ/g 4. Kerosene oil 48 KJ/g 5. Charcoal 33 KJ/g 6. Wood 17 KJ/g Signi...

Q.1 If an analog clock is broken and not moving anymore.How many times a day will it show        the correct time?       A.Zero       B.One       C.Two       D.Three Answer:-Two

Q.1 There are rings around which of the following?       A. Uranus       B. Mars       C. Jupiter       D. Saturn                     Answer :-D Q,2 Thermometer is related to degree in the same way as clock is related to       A. Wall       B. Tower      C. Hour      D. Cock Answer:C Q.3 The solar eclipse occurs when       A. the sun comes in between the moon and the earth       B. the earth comes in the between the sun and the moon       C. the moon comes in between the sun and the earth       D. None of the above Answer:C

Q.1 Which Star is called Earth’s satellite? Q.2 What is the Orbital period of Moon?                       Answer:-1 Earth has many satellites orbiting it, but the only significant natural satellite that orbits the Earth is the moon. The Union of Concerned Scientists (UCS) maintains a listing of all man-made satellites orbiting the Earth, which includes more than 1,000 operating satellites. Full Answer More than 500 of these man-made satellites are operated by the United States, with more than 100 also coming from Russia and China. The UCS Satellite Database is a free and comprehensive database that allows people to find information about the various satellites including altitude and mission. Users are able to find answers to popular questions, such as the number of satellites a given country has in orbit and their specific usage. The moon is Earth's only significant natural satellite, and it is believed to be approximately 4.5 bill...

Q.1 The use of chemicals or drugs to selectively distroy infectious micro-organism without                        destroying the live tissues, or the host,is known as       A.Chemotherapy       B.Gene therapy       C.Drug therapy       D.Plastic surgery Answer:-A Q.2 Gun powder, which is an explosive comprises of charcoal, sulphur and       A. glycerine       B. salt petre       C. nitro glycerine       D. dynamite Answer: Option B Q.3 Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of       A. collagen       B. tannin       C. molasses       D. carbohydrate Answer: Option A

Q.1 Why it keeps us awake,why you think we feel sleepy sometimes even when we are not tired,the          reason is a hormone       A.Adrenaline       B.Adenosine       C.Thyroxine       D.Secrotonine Answer:-B Q.2 Cooking and baking is one of the major activities we do daily that involves chemistry.A chemical        frequently used in baking soda....       A.Sodium bicarbonate       B.Sodium chloride       C.Sodium hydroxide       D.Hydrogen peroxide Answer:-A Q.3 Yogurt,breads, cakes and many other products are formed by multiplication of certain useful                bacteria and the process is called        A.Dehydration        B.Fermentaion        C.Calcination        D.Dehydroge...

Q.1 Which of the following year is not a leap year?       a) 1960       b) 2080       c) 2024       d) 2100 Answer:-2100 The two conditions that decide that a year is a leap year or not is: • For a year to be a leap year, it should be divisible by 4. • No century is a leap year unless it is divisible by 400. Hence, the year 2100 is not a leap year as it is not divisible by 400. Q.2 26th January, 1996 was a Friday. What day of the week lies on 26th January, 1997?        a) Saturday        b) Sunday        c) Monday        d) Thursday Answer:- Sunday The year 1996 was a leap year. Hence, it adds 2 odd days. As 26th January, 1996 was a Friday, 26th January, 1997 was a Sunday. Q.3 The calendar for the year 2001 is same for which of the following year?        a) 2005        b) 2007    ...

Q.1 What is the closest star visible to the naked eye?       A.Alpha Centauri       B.Proxima Centauri       C.Procyon Answer:-A Q.2 Procyon is the second brightest star. It is also one of the nearest. On which constellation can we find Procyon?      A.Scorpius      B.Ursa Major      C.Canis Minor Answer:-C Q.3The nearest star to our solar system is Proxima Centauri. Who discovered Proxima Centauri?       A.Edwin Hubble       B.Robert Innes       C.Giovanni Schiaparelli  Answer:-B

Q.1 What change will happen to a bowl of ice and water kept at exactly zero degree Celsius?       a) All ice will melt       b) All water will become ice       c) No change will happen       d) Only a part will melt   Answer:-C Q.2 Bats can fly in the dark due to        a) They can see the object in dark        b) They have weak legs and are likely to attacked by predators        c) They generate flash of light        d) They generate ultrasound waves Answer:-D Q.3 The propagation of sound waves in gas involves        a) Adiabatic compression and rarefaction        b) Isothermal compression and rarefaction        c) Isochoric compression and rarefaction        d) Isobaric compression and rarefaction Answer:-A

1.In August 2011 NASA announced that photographic evidence had been captured of possible liquid    water of which planet in our solar system? 2.Which is the second planet from the sun? 3.How many planets are in our solar system have rings?  Ans;1-Mars Ans:2-Venus ANs:3-Four

Though the practices of astrology and astronomy have common roots, there is an important distinction in astrology vs astronomy today. Astronomy is the study of the universe and its contents outside of Earth’s atmosphere. Astronomers examine the positions, motions, and properties of celestial objects. Astrology attempts to study how those positions, motions, and properties affect people and events on Earth. For several millennia, the desire to improve astrological predictions was one of the main motivations for astronomical observations and theories. Andreas Cellarius's illustration of the Ptolemaic System (17th century), which shows the solar system and signs of the zodiac with the Earth at the center. J. van Loon, National Library of Australia Astrology vs Astronomy Astrology continued to be part of mainstream science until the late 1600s, when Isaac Newton demonstrated some of the physical processes by which celestial bodies affect each other. In doing so, he showed that the s...

Q.1 Radio broadcasting is a familiar example of       A. space multiplexing       B. time multiplexing       C. frequency multiplexing       D. none of the above Answer: Option C Q.2 The quality of a space-link is measured in terms of the __________ ratio.       A. C/N       B. S/N       C. G/T       D. EIRP Answer: Option A Q.3 Orbital disturbances of a geosynchronous satellite are caused by the        A. moon        B. sun        C. earth        D. all of the above Answer: Option D

Q.1 India's first mission moon chandrayaan-1 was launched from the site        A. Wheeler Island        B.Balasore        C.Sriharikota        D.None of the above Answer:-Sriharikota

Q.1 Which among the following was the first satellite launched by Indian Space Research Organisation?       A.Aryabhatta       B. Bhaskar       C.Rohini       D.INSAT I-A Answer:-Option A         Q.2 The first indian satellite aryabhatta was launched in        A.1974        B.1975        C.1976        D.1977 Answer:Option B Q.3 The name of India's research station at the North Pole is        A.Maitri        B.Himadri        C.Dakshin Gangotri        D.None of these Answer:-Option B

Q.1 The biggest asteroid known is:     a) Vesta     b) Icarus     c) Ceres     d) Eros ANSWER:  -- CERES Q.2 One of the largest volcanos in our solar system-if not the largest-is named Olympus Mons. This          volcano is located on:         a) Jupiter's moon Callisto        b) Venus        c) Saturn's moon Titan        d) Mars ANSWER:  -- MARS Q.3 The sunspot cycle is:       a) 3 years         b) 11 years       c) 26 years       d) 49 years ANSWER:  -- 11 YEARS

Q.1 Is the most important purpose in life happiness? If not, what is? Q.2 If God is “good,” why is there so much evil in the world? Q.3 Can a person be happy if they have never experienced sadness? Q.4 Is it always wrong to lie? When (if ever) is it okay? Q.5 If I gave you $10,000, what would you spend it on?

Q.1 What happened when the two toothpicks were together and you dropped a drop of water? Q.2 What happened when the two toothpicks were together and you dropped a drop of alcohol? Answer 1:- when the water was dropped, the toothpicks spread apart than came back together Answer 2:-when the alcohol was dropped, the toothpicks spread apart in multiple directions and were no longer parallel to each other Q.3 What are the properties of water? Answer :-Cohesion, Adhesion, Capillary Action Q.4 Attraction between molecules of the same substance, water sticks to itself. stays together Answer:-Cohesion Q.5 Rise of water against force of gravity? Answer:-Capillary Action

China took a giant leap into the 21st century when it completed construction of the world’s largest telescope in the fall of 2016. An aerial view of the massive bowl-shaped dish aptly fits its given name – Tianyan – the Eye of Heaven. China spent 1.2 billion yuan, $180 million USD to build the high-tech listening device, some of which they hope to offset by tourism. Concept to Construction First conceived in 1993, the preliminary study project – the Knowledge Innovation Project – leaped its first hurdle in October of 2001 when it received support from the Chinese Academy of Sciences and the Ministry of Science and Technology. It would take another six years before the project received approval from the National Development and Reform Commission in 2007 when it entered the feasibility study phase. A little more than a year later, the project received the green light and the initial design phase started. Construction began in 2011, and it took a little over five and half years to build...

1.B2CD, _____, BCD4, B5CD, BC6D    A. B2C2D    B. BC3D    C. B2C3D    D. BCD7 Answer: Option B Explanation: Because the letters are the same, concentrate on the number series, which is a simple 2, 3, 4, 5, 6 series, and follows each letter in order. 2.ELFA, GLHA, ILJA, _____, MLNA    A. OLPA    B. KLMA    C. LLMA    D. KLLA Answer: Option D Explanation: The second and forth letters in the series, L and A, are static. The first and third letters consist of an alphabetical order beginning with the letter E. 3.CMM, EOO, GQQ, _____, KUU    A. GRR    B. GSS    C. ISS    D. ITT Answer: Option C Explanation: The first letters are in alphabetical order with a letter skipped in between each segment: C, E, G, I, K. The second and third letters are repeated; they are also in order with a skipped letter: M, O, Q, S, U.

1.The outermost layer of Sun is called    A. Corona    B. Photosphere    C. Lithosphere    D. Chromosphere    Answer :-Corona    Explane :- The sun and its atmosphere are divided into several zones and layers. The solar interior, from the inside out, is made up of the core, radiative zone and the convective zone. The solar atmosphere above that consists of the photosphere, chromosphere, a transition region and the corona. Beyond that is the solar wind , an outflow of gas from the corona 2.The term  best describes the shape of the earth is    A. Sphere    B. Globe    C. Ellipse    D. Geoid Answer:-Geoid 3. The Earth rotates around an axis pointing towards     A. The moon     B. The Sun     C. Venus     D. The polestar Answer:-The polestar

Which of the modification in hemoglobin is the cause of sickle cell anemia? A. A mutation in the beta chain B. A deletion in the beta chain C. Replacement of the B chain by D chain D. None of the above     Answer:A During sickle cell anemia which of the following takes place? A. Glutamine change to valine B. Valine change to glutamine C. Aspartic acid change to glutamic acid D. Glutamic acid change to aspartic acid    Answer:A

Why is the sky blue? Answer:- The reason the sky appears blue is because of an effect called scattering. Sunlight has to pass through Earth's atmosphere, which is filled with gases and particles that act like the bumpers on a pinball machine, bouncing sunlight all over the place. But if you've ever held a prism in your hands, you know that sunlight actually is made up of a bunch of different colors, all of which have different wavelengths. Blue light has a relatively short wavelength, so it gets through the filter more easily than colors with longer wavelengths, and as a result are scattered more widely as they pass through the atmosphere. That's why the sky looks blue during the parts of the day when the sun appears to be high in the sky (though it's actually the spot on the planet where you are standing that is moving, relative to the sun). At sunrise and sunset, though, the sun's rays have to travel a longer distance to reach your position. That cancel...

1.Type A blood    A. can be used to donate to type AB individuals    B. can be used to donate to type B individuals    C. contains type B antigens on the surface of red blood cells    D. can always be used to donate to an Rh+ individual Answer: Option A 2.Antibodies can be used    A. for the localization of proteins in the cell    B. for protein purification    C. to catalyze chemical reactions    D. all of the above Answer: Option D 3.The main function of antibodies is to    A. kill all the foreign bodies    B. generate antigens, thus conferring immunization    C. protect the circulatory system    D. chemically combine with the antigen which induces it, inactivate the antigen and protect the body from disease Answer:Option D 4.A secondary antibody is an antibody that    A. has been used in prior experiments    B. is synthetically produ...

1.Nuclear fission is caused by the impact of    A. neutron    B. proton    C. deuteron    D. electron Answer: Option A 2,Isotopes are separated by    A. crystallisation    B. sublimation    C. distillation    D. filtration Answer: Option C 3.Which of the following rays are more penetrating?     A. Beta rays     B. Alpha rays     C. Gamma rays     D. X-rays Answer: Option C 4.How many colours the sunlight spectrum has?    A.Three    B. Seven    C. Four    D. Five Answer: Option B 5.Mesons are found in    A. Laser beam    B. X-rays    C. Gamma rays    D. Cosmic rays Answer: Option D

1. Who invented the first controllable flying AEROPLANE (AIRPLANE)? A.Wright Brothers B.Lidenbergh Brothers C.South Brothers D.West Brothers Answer;-A Wilbur and Orville Wright made the first successful controlled powered flight at Kitty Hawk, North Carolina, in December 1903. The twelve second flight covered a distance of 120 feet and an altitude of just ten feet. 2. In which decade was the Internet first implemented? A.1940s B1950s C.1960s D.1980s Answer;-C The first message ever sent over what is now called the Internet took place at 10:30PM on October 29, 1969. Back then, the Department of Defense called it ARPAnet (Advanced Research Projects Agency network). 3.What now-ubiquitous device was invented by Zenith engineer Eugene Polley in 1955? A.Microwave oven B.Remote control C.VCR D.Calculator Answer: Option B The first wireless remote control for television was called Flashmatic. (Remember when you had to get up to change the c...

Diabetes is a number of diseases that involve problems with the hormone insulin. Normally, the pancreas (an organ behind the stomach) releases insulin to help your body store and use the sugar and fat from the food you eat. Diabetes can occur when the pancreas produces very little or no insulin, or when the body does not respond appropriately to insulin. As yet, there is no cure. People with diabetes need to manage their disease to stay healthy. Diabetes is a disorder of metabolism -- the way our bodies use digested food for growth and energy. There are three main types of diabetes: type 1, type 2, and gestational diabetes. What Is Diabetes? Diabetes is a number of diseases that involve problems with the hormone insulin. There is no cure for diabetes. People with diabetes need to manage their disease to stay healthy.

Diseases and infections that can kill you within 24 hours 1. From Ebola to the bubonic plague, there are diseases that can kill within 24 hours if not caught in time or treated properly.  2. Bubonic plague Also known as the Black Death, the plague is caused by the bacterium Yersinia pestis. In the mid-1300s, it wiped out approximately half of Europe's population.  Bubonic plague The disease infects small animals, such as rats, and is then transmitted to humans through fleas or other bugs. Symptoms include fever, chills, vomiting, and body aches.  The disease also causes lymph-node sw...