In which decade were the first successful diode and triode vacuum tubes invented?


Options: 1800s,    1880s,    1890s,    1900s

Ans:D,D






More inventions Related questions:


In cricket, a run taken when the ball passes the batsman without touching his bat or body is called
Options: leg bye,    bye,    bosie,    drive

Ans:B,B


G-15 is a group of
Options: developing countries,    non-aligned countries,    developed countries,    companies

Ans:A,A


Name the instrument used to measure relative humidity
Options: Hydrometer,    Hygrometer,    Barometer,    Mercury Thermometer

Ans:B,B


In which decade was the telephone invented?
Options: 1850s,    1860s,    1870s,    1880s

Ans:C,C


The smallest division of geological time scale is
Options: eon,    eras,    stage,    periods

Ans:C,C


First human heart transplant operation conducted by Dr. Christiaan Barnard on Louis Washkansky, was conducted in
Options: 1967,    1968,    1958,    1922

Ans:A,A


What is the literacy rate of Maharashtra?
Options: 77.27 per cent,    66.26 per cent,    55.25 per cent,    44.24 per cent

Ans:A,A


Gulf of Mannar Marine National Park
Options: Karnataka,Kerala,Tripura,Tamil Nadu

Ans:Tamil Nadu,


when was the AEEE (now the IEEE) founded?
Options: 1850s,    1880s,    1930s,    1950s

Ans:B,B


Until December 1991 ____ were integral parts of the USSR & not independent countries, but had separate UN memberships.
Options: Belarus and Ukraine,    Czech Republic and Slovakia,    Tonga and Nauru,    None of the above

Ans:A,A


The 2005 Australian Open Tennis Championship titles for men's and women's singles were won, respectively by
Options: Pete Sampras and Steffi Graf,    Rafael Nadal and Venus Williams,    Andre Agassi and Arantxa Sanchez-Vicario,    Marat Safin and Serena Williams

Ans:D,D


It is more difficult to walk on a sandy road than on a concrete road because
Options: sand is soft and concreter is hard,    the friction between sand and feet is less than that between concrete and feet,    the friction between sand and feet is more than that between concrete and feet,    the sand is grainy but concrete is smooth

Ans:B,B


Which is the associated sport of Bombay Gold Cup?
Options: Basketball,    Weightlifting,    Hockey,    Football

Ans:C,C


tarain or thaneswwer 1st battle was fought between
Options: prithvi raj chauhan and mohd gori, prithvi raj chauhan and mohd gajni,rana pratap and lord bentik

Ans: prithvi raj chauhan and mohd gori, prithvi raj chauhan and mohd gori


There was a sharp class division at Harappa and Mohen-jodaro. This is clear from the
Options: Indus seals excavated,    religious beliefs of the Harappans,    tools and implements used by the Harappans,    different types of dwellings excavated

Ans:D,D


What is the purpose of OECD (Organisation for Economic Cooperation and Development)?
Options: Sustained economic growth,    Employment,    Higher standards of living,    All of the above

Ans:D,D


The infrared radiation by sun are strongly absorbed by
Options: carbon dioxide,    water vapours,    carbon dioxide and water vapours,    ozone

Ans:A,A


Where is the headquarters of Oil and Natural Gas Commission?
Options: Dehradun,    Vadodara,    Digboi,    Mumbai

Ans:A,A


The dance encouraged and performance from the temple of Tanjore was
Options: Kathakali,    Odissi,    Kathak,    Bharatanatyam

Ans:D,D


The isotope of uranium capable of sustaining chain reaction is
Options: U-235,    U-245,    U-239,    U-238

Ans:A,A


'Natya - Shastra' the main source of India's classical dances was written by
Options: Nara Muni,    Bharat Muni,    Abhinav Gupt,    Tandu Muni

Ans:B,B


im Corbett National Park
Options: Karnataka,Kerala,Tripura,Uttarakhand

Ans:Uttarakhand,


The import of crude oil and petroleum done from national oil companies of producer countries, which have a net exportable surplus of oil is by
Options: term contracts,    term tenders,    monthly tenders,    All the above

Ans:A,A


Which Bank has the maximum number of branches?
Options: ICICI Bank,    HDFC Bank,    State Bank of India,    State Bank of Patiala

Ans:C,C


Kemal Ataturk was
Options: the first President of Independent Kenya,    the founder of modern Turkey,    revolutionary leader of Soviet Union,    None of the above

Ans:B,B


The most abundant rare gas in the atmosphere is
Options: He,    Ne,    Ar,    Xe

Ans:C,C


Since independence, both development and non-development expenditures have increased; the increase in the former being a little more than in the other. Non-development expenditure involves interest payments subsidies defence irrigation
Options: I, II,    I,    I, II, III,    II, III, IV

Ans:C,C


Which of the following has a potential for harnessing of tidal energy in India?
Options: Gulf of Cambay,    Gulf of Mannar,    Backwaters of Kerala,    Chilka lake

Ans:A,A


The important mountains of Europe include
Options: Andes, Alps, Pyrenees,    Alps, Carpathians, Pyrenees, Apennines,    Alps, Himalayas, Rock mountains,    None of the above

Ans:B,B


For whom high heeled shoes were invented?
Options: Cleopatra,    Queen Elizabeth I,    King Louis the XIV,    King Charles II

Ans:C,C


Which industries are common in Andhra Pradesh?
Options: Cement and paper,    Asbestos and units of HMT, BHEL,    Hindustan Shipyard and Bharat Dynamics Limited,    All of the above

Ans:D,D


To meet the educational needs of the people, the Madarasa-I Nasiri was built in the region of
Options: Qutub-ud-din Aibak,    Iltutmish,    Ruknuddin Firoz Shah,    Jalal-id-din Khilji

Ans:B,B


To which professions earlier leaders who struggled for freedom of India mainly belonged?
Options: Lawyers,    Teachers,    Journalists,    All of the above

Ans:D,D


What are three types of lasers?
Options: Gas, metal vapor, rock,    Pointer, diode, CD,    Diode, inverted, pointer,    Gas, solid state, diode

Ans:D,D


The system of competitive examination for civil service was accepted in principle in the year
Options: 1833,    1853,    1858,    1882

Ans:B,B


What is the Websites code for the country Mongolia?
Options: MN,    ML,    MG,    MO

Ans:A,A


The headquarters of the UNESCO is at
Options: Rome,    Geneva,    New York,    Paris

Ans:D,D


Jaspal Rana is in which of the following games?
Options: Shooting,    Weight Lifting,    Swimming,    Archery

Ans:A,A


The weekly Commonweal was founded by
Options: Annie Besant,    Bipan Chandra Pal,    Bal Gangadhar Tilak,    Sarojini Naidu

Ans:A,A


What is RISC?
Options: Remodeled Interface System Computer,    Remote Intranet Secured Connection,    Runtime Instruction Set Compiler,    Reduced Instruction Set Computer

Ans:D,D


Who invented the BALLPOINT PEN?
Options: Biro Brothers,    Waterman Brothers,    Bicc Brothers,    Write Brothers

Ans:A,A


How much districts are there in Punjab?
Options: 13,    17,    22,    15

Ans:C,C


In which year was Pulitzer Prize established?
Options: 1917,    1918,    1922,    1928

Ans:A,A


The pyramidal peaks that form when several cirques chisel a mountain form three more sides are called
Options: horns,    cirques,    aretes,    medial moraines

Ans:A,A


Pambadum Shola National Park
Options: Karnataka,Kerala,Tripura,Kerala

Ans:Kerala,


Ramapithecus and Cro-Magnon man are considered
Options: ancestors of modern man,    ancestors of monkey,    ancestors of lion,    None of the above

Ans:A,A


The president can dissolve the Lok Sabha on
Options: advice of the prime minister,    advice of the chief justice of India,    recommendation of Lok Sabha,    recommendation of the Rajya Sabha

Ans:A,A


How many Dynes are there in 1 gram weight?
Options: 900,    375,    981,    250

Ans:C,C


The steady or initial phase of the magnetic storms is
Options: preceded by storm sudden commencement,    magnetic storm at middle and low altitudes,    a sharp increase of the field,    None of the above

Ans:A,A


The percentage of irrigated land in India is about
Options: 45,    65,    35,    25

Ans:C,C

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