Global Breakthrough Technologies — Homi Bhabha Class 9 General Knowledge MCQs with Solutions
Free Homi Bhabha Class 9 General Knowledge Global Breakthrough Technologies MCQs with step-by-step solutions (25 questions). Part of Scientific Achievements. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Global Breakthrough Technologies · medium · theory
The first human being to set foot on the Moon (1969) was:
A. Rakesh Sharma
B. Yuri Gagarin
C. Buzz Aldrin
D. Neil Armstrong ✓ Correct
Solution: Neil Armstrong of Apollo 11 was the first person to walk on the Moon.
Q2 — Global Breakthrough Technologies · hard · theory
The first artificial satellite launched into space (1957) was:
A. Explorer 1
B. Sputnik 1 ✓ Correct
C. Hubble
D. Aryabhata
Solution: The Soviet Union launched Sputnik 1, the first artificial satellite, in 1957.
Q3 — Global Breakthrough Technologies · medium · theory
The first human to travel into space (1961) was:
A. Kalpana Chawla
B. John Glenn
C. Neil Armstrong
D. Yuri Gagarin ✓ Correct
Solution: Soviet cosmonaut Yuri Gagarin became the first human in space in 1961.
Q4 — Global Breakthrough Technologies · medium · theory
AI, a rapidly growing field of computer technology, stands for:
A. Advanced Instrument
B. Automatic Internet
C. Artificial Intelligence ✓ Correct
D. Applied Information
Solution: AI stands for Artificial Intelligence — machines performing tasks that need human-like intelligence.
Q5 — Global Breakthrough Technologies · hard · theory
The powerful space telescope launched in 2021 to observe the early universe in infrared is the:
A. Chandra Telescope
B. James Webb Space Telescope ✓ Correct
C. Hubble Space Telescope
D. Kepler Telescope
Solution: The James Webb Space Telescope (JWST), launched in 2021, observes the universe in infrared.
Q6 — Global Breakthrough Technologies · medium · theory
The technology of building objects layer by layer from a digital design is called:
A. welding
B. photocopying
C. moulding
D. 3D printing ✓ Correct
Solution: 3D printing (additive manufacturing) creates objects layer by layer from a computer model.
Q7 — Global Breakthrough Technologies · hard · theory
The gene-editing technology that allows scientists to precisely change DNA is known as:
A. GPS
B. SONAR
C. CRISPR ✓ Correct
D. MRI
Solution: CRISPR is a powerful tool for editing genes with great precision.
Q8 — Global Breakthrough Technologies · medium · theory
The global navigation system used in mobile phones and vehicles to find location is:
A. RAM
B. CPU
C. LAN
D. GPS ✓ Correct
Solution: GPS (Global Positioning System) uses satellites to determine location.
Q9 — Global Breakthrough Technologies · hard · theory
The first successful human heart transplant was performed in 1967 by:
A. Dr Edward Jenner
B. Dr Christiaan Barnard ✓ Correct
C. Dr Jonas Salk
D. Dr Alexander Fleming
Solution: Dr Christiaan Barnard carried out the first human heart transplant in South Africa in 1967.
Q10 — Global Breakthrough Technologies · hard · theory
The type of vaccine technology used in several COVID-19 vaccines, based on genetic material, is:
A. antiseptic
B. painkiller
C. antibiotic
D. mRNA vaccine ✓ Correct
Solution: mRNA vaccines instruct cells to make a viral protein, triggering immunity.
Q11 — Global Breakthrough Technologies · medium · theory
Vehicles that run on rechargeable batteries instead of petrol/diesel are called:
A. electric vehicles (EVs) ✓ Correct
B. steam engines
C. bullock carts
D. jet planes
Solution: Electric vehicles use electric motors powered by batteries, reducing pollution.
Q12 — Global Breakthrough Technologies · medium · theory
A clean and renewable source of energy obtained directly from the Sun is:
A. solar energy ✓ Correct
B. coal
C. natural gas
D. petroleum
Solution: Solar energy is renewable and non-polluting, harnessed using solar panels.
Q13 — Global Breakthrough Technologies · hard · theory
The World Wide Web (www), which revolutionised information sharing, was invented by:
A. Tim Berners-Lee ✓ Correct
B. Thomas Edison
C. Bill Gates
D. Charles Babbage
Solution: Tim Berners-Lee invented the World Wide Web in 1989.
Q14 — Global Breakthrough Technologies · medium · theory
Machines that can be programmed to carry out tasks automatically, often used in industries, are called:
A. turbines
B. satellites
C. reactors
D. robots ✓ Correct
Solution: Robots are programmable machines that perform tasks automatically.
Q15 — Global Breakthrough Technologies · hard · theory
The first living organism (a sheep) to be successfully cloned was named:
A. Laika
B. Dolly ✓ Correct
C. Bella
D. Rani
Solution: Dolly the sheep, cloned in 1996, was the first mammal cloned from an adult cell.
Q16 — Global Breakthrough Technologies · easy · theory
A network of everyday devices such as watches, lights and fridges connected to the internet to share data is called the:
A. Internet of Things (IoT) ✓ Correct
B. Internet Explorer
C. Local Area Network
D. Random Access Memory
Solution: The Internet of Things (IoT) links ordinary objects to the internet so they can send and receive data.
Q17 — Global Breakthrough Technologies · easy · theory
The tall structures with large rotating blades that convert moving air into electricity are called:
A. wind turbines ✓ Correct
B. nuclear reactors
C. solar cells
D. transistors
Solution: Wind turbines turn the kinetic energy of wind into electrical energy using rotating blades and a generator.
Q18 — Global Breakthrough Technologies · easy · theory
Small remotely controlled flying machines now used for aerial photography and delivering parcels are called:
A. telescopes
B. satellites
C. submarines
D. drones ✓ Correct
Solution: Drones are unmanned aircraft flown by remote control or software, widely used for photography and delivery.
Q19 — Global Breakthrough Technologies · easy · theory
The modern lighting technology that gives bright light while using far less electricity than old filament bulbs is the:
A. kerosene lamp
B. incandescent bulb
C. LED ✓ Correct
D. candle
Solution: LEDs (light-emitting diodes) are highly energy-efficient and last much longer than older bulbs.
Q20 — Global Breakthrough Technologies · medium · theory
The branch of artificial intelligence in which computers improve at a task by learning patterns from data, instead of being given step-by-step instructions, is called:
A. photocopying
B. machine learning ✓ Correct
C. word processing
D. soldering
Solution: Machine learning lets computers find patterns in data and improve automatically without being explicitly programmed for each case.
Q21 — Global Breakthrough Technologies · medium · theory
The technology that builds new materials and devices by controlling matter at the scale of a few nanometres (billionths of a metre) is called:
A. nanotechnology ✓ Correct
B. hydraulics
C. masonry
D. carpentry
Solution: Nanotechnology works with extremely tiny structures, often measured in nanometres, to create materials with special properties.
Q22 — Global Breakthrough Technologies · medium · numerical
A solar panel delivers about 300 W in full sunlight. To run a device that needs 1500 W, the smallest number of such panels required is:
A. 5 ✓ Correct
B. 4
C. 6
D. 3
Solution: 1500 ÷ 300 = 5, so five 300 W panels together supply the needed 1500 W.
Q23 — Global Breakthrough Technologies · hard · theory
Quantum computers can, in principle, be far more powerful than ordinary computers because their basic unit, the qubit, can:
A. store only the value 1
B. represent 0 and 1 at the same time (superposition) ✓ Correct
C. store only the value 0
D. work without any electricity
Solution: Unlike a normal bit that is either 0 or 1, a qubit can exist in a superposition of both, letting quantum computers explore many possibilities at once.
Q24 — Global Breakthrough Technologies · hard · numerical
Suppose the number of transistors on a chip doubles about every 2 years. A chip today holds about 1 million transistors. At this rate, a chip about 6 years from now would hold roughly:
A. 3 million
B. 8 million ✓ Correct
C. 6 million
D. 4 million
Solution: 6 years is 3 doubling periods (6 ÷ 2). Doubling three times multiplies by 2 × 2 × 2 = 8, giving about 8 million.
Q25 — Global Breakthrough Technologies · hard · theory
Assertion (A): Optical fibres can carry very large amounts of data over long distances at high speed. Reason (R): They transmit information as pulses of light travelling through thin strands of glass. Choose the correct option:
A. A is true but R is false
B. Both A and R are false
C. Both A and R are true, and R correctly explains A ✓ Correct
D. Both A and R are true, but R does not explain A
Solution: Optical fibres send data as light pulses through glass, and it is exactly this light-based transmission that gives them their huge speed and capacity.