CBSE Questions for Class 8 General Knowledge India: Science And Technology Quiz 2 - MCQExams.com

Consider the following statements
Witricity is a technique that can deliver energy to devices such as laptop, computer without the need of wire
Witricity is able to make a 60 W light bulb glow from a distance of 12 metres
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Which one of these statements is not true?
  • Gold at the nanoscale is red
  • Copper at the nanoscale is transparent
  • Silicon at the nanoscale is an insulator
  • Aluminium at the nanoscale is highly combustible
The diameter of fly ash particles is ___________ $$\mu m$$.
  • $$5 - 10$$
  • $$10- 20$$
  • $$20 - 30$$
  • $$100$$
Param Padma is __________________.
  • An indigenously built super computer
  • An indigenously built submarine
  • A nuclear capable warfare ship
  • None of the above
The width of carbon nanotube in $$nm$$ is ___________.
  • $$1$$
  • $$1.3$$
  • $$1.55$$
  • $$10$$
What is graphene?
  • A new material made from carbon nanotubes.
  • A one atom thick sheet of carbon.
  • Thin film made from fullerenes.
  • A software tool to measure and graphically represent nano particles.
Which one of the following processing core is commonly used in the embedded computer to perform the specific functions?
  • Digital signal processor
  • Analog signal processor
  • Parallel signal processor
  • Perpendicular signal processor
Which one of the following countries has developed the Tianhe-1A, one of the worlds fastest supercomputer?
  • Japan
  • South Korea
  • China
  • Chinese Taipei
Consider the following statements:
Embedded computer is used in the MP3 players and traffic lights.
The nuclear power plant is controlled by using embedded computer.
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Multi user systems provided cost savings for small business because they use a single processing unit to link several is called ______________.
  • Personal computers
  • Workstations
  • Dumb terminals
  • Mainframe
Consider the following statements
Supercomputer Saga-220 is capable of performing at the speed above 200 TFIOPS
India has only 2 supercomputer systems on the Top 500 supercomputers list of the world
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Consider the following statements
Analog computer uses continuously-changeable aspects of physical phenomena such as electrical, mechanical, or hydraulic quantities to solve the problems
Analog computers have a very narrow range of complexity and operations
Which of the statements given above is/are correct?
  • Only 1
  • Both 1 and 2
  • Neither 1 nor 2
  • Only 2
Shruti-Drishti is an initiative regarding _______________________.
  • Improving eye-sight of elders
  • Web page browser for visually impaired uses
  • Rehabilitation scheme for blind children
  • All of the above
Consider the following instruments:
Electronic stethoscopes
Anti-lock braking system 
GPS receivers 
Microwave ovens 
Which of the instruments given above have embedded computer system?
  • 1,2, 3 and 4
  • 1,2 and 3
  • 1, 2 and 4
  • 1,3 and 4
Which type of computer could be found in a digital watch?
  • Mainframe
  • Super computer
  • Notebook computer
  • Embedded computer
Fastest supercomputer of world which is a joint version of IBM and US deptt. of energy is __________.
  • EKA
  • BLUE GENE
  • L system
  • Both b and c
Permanent instructions that the computer use when it is turned on and that cannot be changed by other instructions are contained in __________.
  • ROM
  • RAM
  • ALU
  • CPU
Which one of the following is the field related with Flynns taxonomy?
  • Classification of software based on their memory size and performance
  • Classification of parallel and sequential computers and programmes
  • Classification of computers based on their size and uses
  • None of the above
Which one of the following computer is the first program-controlled electromechanical computing machine/computer?
  • ABC
  • Colossus
  • J3
  • Z3
Which one of the following connects the different parts of a computer which is usually made up of wires?
  • URLs
  • Modem
  • Buses
  • CPUs
Consider the following statements:
Quantum computer makes direct use of superposition and entanglement to perform operations on data
Quantum computer can solve the problems much faster than any classical computer
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Which one of the following computers is the first digital electronic computer albeit not programmable in the world?
  • Tommy-Flowers computer
  • Flowers-Andy computer
  • Claude-Shannon computer
  • Atanasoff-Berry computer
Consider the following statements
The qubits of quantum computer is fundamentally same with the bits of the classical computer
The qubits of quantum computer can hold more information than their classical counterpart bits
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Consider the following statements
The first programmable electronic computer was the Colossus
The Colossus was built by Tommy Flowers
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Which one of the following performs the power-on self-test, which initialises and identifies system devices such as the CPU, RAM, video display card, keyboard and mouse, hard disk drive, optical disc drive and other hardware when the PC starts up?
  • GNU
  • GUI
  • CPU
  • BIOS
Microcomputer hardware consists of three basic categories of physical equipments, they are _________________.
  • Keyboard, monitor and hard drive
  • Systemunit, input/output and memory
  • System unit, input/output and secondary memory
  • System unit, primary and secondary memories
  • None of the above
Accessible India Campaign focuses on which of the following areas? 
Stipends
Information and Communication Technologies 
Public Transportation
  • 1 and 3
  • 1 and 2
  • 2 and 3
  • 1,2 and 3
Which of the following is true about Param Kanchenjunga?
It is a super computer that has been jointly developed by Centre for Development of Advanced Computing (C-DAC) and the NIT Sikkim.
It is a satellite that has been developed by ISRO.
  • Both 1 and 2
  • Only 1
  • Only 2
  • Neither 1 nor 2
Which of the following company is known as Big Blue?
  • IBM
  • Dell
  • Intel
  • Apple
Which one of the following output devices is used to produce the prints of pie charts, bar charts-and graphs with annotation?
  • Serial printer
  • Chain printer
  • Line printer
  • Printer plotters
Which one among the following is the top processor of the computer in the world?
  • Intel
  • Opteron
  • Consly
  • None of these
Consider the following statements:
The drum and chain printers consist a cylindrical drum and band of steel band respectively on which the character sets are embossed.
Wavy line never appears in the drum printer and has advantages over the chain printer.
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Which of the following statement is/are true about white-fi technology?
It uses the unused spectrum in frequencies for broadcasting at television signals and use it for the internet
The 200-300 MHz spectrum in the white space can reach upto 10 km as compared to current wi-fi technology that allows you a range of about 100 metres.
It can be run

of solar power
  • 1 and 3
  • 1,2 and 3
  • 1 and 2
  • 2 and 3
As compared to a magnetic tape, the main advantage, of magnetic disk is _____________.
  • Rigidity
  • Direct access
  • Fetch operations
  • All of the above
Mac operating system is developed by which company?
  • IBM
  • Apple
  • Microsoft
  • Samsung
Which of following is not anoperating system?
  • Unix
  • Linux
  • Windows
  • Java
Consider the following statements
Javascript is a weakly-typed computer language
HTML is used to link a site clicking to the contents of a web page
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Consider the following statements:
Assembly language is the first generation computer language.
Machine language is the second generation computer language.
COBOL is a third generation computer language.
Which of the statements given above is/are correct?
  • 1, 2 and 3
  • Only 2
  • 1 and 3
  • Only 3
Which one of the following programming language is commonly used in the embedded computer?
  • FORTRAN
  • COBOL
  • Java
  • C-language
Which one of the following languages is the system programming language derived from Pascal and intended for defence application?
  • C-language
  • C++ language
  • FORTRAN
  • Ada
Consider the following statements
FORTRAN is an imperative programming language that is especially suited to numeric computation and scientific computing
FORTRAN is one of the most popular languages in the area of high-performance computing and used in the worlds fastest super computers
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Which of the following computer languages defines that the structured data is not designated as programming language in general?
XML   HTML   Troff     C-language
Select the correct answer using the codes given below.
  • 1,2, 3 and 4
  • 1,2 and 3
  • 2 and 3
  • 2 and 4
Who has created the high-level programming language for the first time for computers?
  • Konrad Lorenz
  • Konrad Zuse
  • Mario Johnson
  • Henry Gladstone
Consider the following statements:
High-level language uses the higher level of abstraction from machine language.
Assembly language is the high- level programming language for computers, microprocessors and other programmable devices.
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Consider the following statements
Most of the assembly-languages are the untyped languages
Java language used in the web-browsing is the untyped language
Which of the statements given above is/are correct? 
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Consider the, following statements:
Microsoft Power-Point presentation is written in the FORTRAN language.
FORTRAN is the oldest computer language.
Which of the statements given above is/are correct? 
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Which one of the following persons designed FORTRAN, the computer programming language?
  • John Backus
  • Grace Hooper
  • William Selden
  • Goerge Schleiden
Consider the following statements:
Java is portable can run on any hardware/operating-system platform.
Java is developed by the Sun Microsystems.
Programs written in Java are faster and required less memory than those written in C and C++.
Java is derived much of its syntax from C and C++.
Which of the statements given above is/are correct about Java language?
  • 1,2, 3 and 4
  • 1, 2 and 3
  • 1, 2 and 4
  • 2, 3 and 4
Who had developed PASCAL, the programming language named in honour of the French mathematician and philosopher Blaise Pascal?
  • William Euler
  • Niklaus Sarkozy
  • John Backus
  • Niklaus Wirth
Who has developed the object-oriented high level programming computer language C++?
  • Jean E Sammet
  • San Jose
  • G Silverfrost
  • Bjarne Stroustrup
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