Science – GK Questions

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Showing 81–100 of 399 questions
science medium True/False Environmental Science - Blue Economy UPSC Prelims, SSC CGL, Railway NTPC

True or False: India's Deep Ocean Mission aims to explore polymetallic nodules and develop oceanic thermal energy conversion (OTEC).

  1. True
  2. False
science hard MCQ Biology - CAR-T Cell Therapy UPSC CSE, SSC Scientific Assistant, CSIR NET

CAR-T therapy engineers a patient's T cells to express chimeric antigen receptors targeting:

  1. Bacterial antigens
  2. Viral proteins
  3. Tumor-specific antigens
  4. Autoantigens
science hard Fill in the Blank Biology - mRNA Therapeutics UPSC CSE, SSC Scientific Assistant, CSIR NET

Lipid nanoparticles (LNPs) in mRNA vaccines protect the mRNA and facilitate its entry into cells via ________.

  1. Diffusion
  2. Endocytosis
  3. Osmosis
  4. Active transport
science medium True/False Chemistry - Battery Recycling SSC CGL, Railway NTPC, UPSC CAPF

True or False: Hydrometallurgical processes use aqueous solutions to recover valuable metals from spent lithium-ion batteries.

  1. True
  2. False
science medium MCQ Chemistry - Green Hydrogen Production UPSC Prelims, SSC CGL, Railway NTPC

Green hydrogen is produced by electrolysis of water using electricity from:

  1. Coal power plants
  2. Natural gas reforming
  3. Renewable energy sources
  4. Nuclear power
science hard Fill in the Blank Physics - Quantum Sensing UPSC CSE, SSC Scientific Assistant, Railway JE

Atomic clocks used in GPS satellites rely on the hyperfine transition of ________ atoms for precise timekeeping.

  1. Hydrogen
  2. Cesium
  3. Rubidium
  4. Strontium
science medium True/False Technology - Digital Public Goods UPSC Prelims, SSC CGL, Banking PO

True or False: India Stack is a set of open APIs and digital public goods that enable paperless, presence-less, and cashless service delivery.

  1. True
  2. False
science hard MCQ Technology - Brain-Computer Interfaces UPSC CSE, SSC Scientific Assistant, CSIR NET

Non-invasive BCIs typically use which technique to record brain activity?

  1. Electrocorticography (ECoG)
  2. Electroencephalography (EEG)
  3. Functional MRI
  4. Magnetoencephalography (MEG)
science hard Fill in the Blank Technology - Neuromorphic Computing UPSC CSE, Banking Specialist Officer, SSC CHSL

Neuromorphic chips mimic the human brain's architecture using ________ to process information efficiently.

  1. Transistors
  2. Memristors
  3. Capacitors
  4. Inductors
science medium True/False Environmental Science - Climate Justice UPSC Prelims, SSC CGL, Railway NTPC

True or False: The principle of Common But Differentiated Responsibilities (CBDR) acknowledges varying national capabilities in addressing climate change.

  1. True
  2. False
science hard MCQ Environmental Science - Carbon Capture UPSC CSE, SSC Scientific Assistant, CSIR NET

Direct Air Capture (DAC) technology removes CO₂ directly from:

  1. Flue gases
  2. Ambient air
  3. Ocean water
  4. Soil
science medium Fill in the Blank Environmental Science - Net-Zero Pathways UPSC Prelims, SSC CGL, Railway NTPC

India's Long-Term Low-Emission Development Strategy (LT-LEDS) targets net-zero emissions by the year ________.

  1. 2050
  2. 2060
  3. 2070
  4. 2080
science medium True/False Biology - Microbiome Therapeutics SSC CGL, Railway NTPC, UPSC CAPF

True or False: Fecal microbiota transplantation (FMT) is an approved treatment for recurrent Clostridioides difficile infection.

  1. True
  2. False
science hard MCQ Biology - Liquid Biopsy UPSC CSE, SSC Scientific Assistant, CSIR NET

Liquid biopsy for cancer detection primarily analyzes which component in blood?

  1. Red blood cells
  2. Circulating tumor DNA (ctDNA)
  3. Platelets
  4. White blood cells
science hard Fill in the Blank Biology - Organoid Technology UPSC CSE, SSC Scientific Assistant, CSIR NET

Organoids are 3D miniaturized versions of organs grown from ________ cells that mimic key structural and functional properties.

  1. Prokaryotic
  2. Stem
  3. Epithelial
  4. Blood
science medium True/False Chemistry - Sustainable Polymers SSC CGL, Railway NTPC, UPSC CAPF

True or False: Polyhydroxyalkanoates (PHAs) are biopolymers produced by microbial fermentation of sugars or lipids.

  1. True
  2. False
science medium MCQ Chemistry - Electrochemical Energy Storage Railway JE, SSC JE, Banking Specialist Officer

Which battery chemistry offers the highest energy density for electric vehicles?

  1. Lead-acid
  2. Nickel-Metal Hydride
  3. Lithium-ion
  4. Sodium-ion
science hard Fill in the Blank Chemistry - AI in Drug Discovery UPSC CSE, SSC Scientific Assistant, CSIR NET

AlphaFold, developed by DeepMind, uses deep learning to predict the ________ structure of proteins.

  1. Primary
  2. Secondary
  3. Tertiary
  4. Quaternary
science hard True/False Physics - Neutrino Research UPSC CSE, SSC Scientific Assistant, CSIR NET

True or False: The India-based Neutrino Observatory (INO) aims to study atmospheric neutrinos using a magnetized iron calorimeter detector.

  1. True
  2. False
science hard MCQ Physics - Gravitational Waves UPSC CSE, SSC Scientific Assistant, CSIR NET

Gravitational waves were first directly detected by which observatory?

  1. LIGO
  2. VIRGO
  3. GEO600
  4. KAGRA