General Science Mock Test | General Awareness | RRB NTPC

Q1. Which of the following micronutrients plays a crucial role in the synthesis of coenzyme A, a key component in numerous metabolic pathways, and is involved in fatty acid metabolism?

Vitamin B6 (Pyridoxine) Vitamin B12 (Cobalamin) Pantothenic Acid (Vitamin B5) Biotin (Vitamin B7)

Q2. What is the main environmental problem associated with the extraction and burning of fossil fuels?

Increased biodiversity Reduced air pollution Greenhouse gas emissions and climate change Depletion of non-renewable resources

Q3. In a demonstration illustrating the concept of surface tension, a needle is carefully placed on the surface of water. It floats. If a small amount of soap is added to the water, the needle sinks. This is because the soap:

Increases the density of the water, making it buoyant enough to support the needle. Reduces the surface tension of the water, breaking the cohesive forces holding the needle. Reacts chemically with the needle, causing it to corrode. Increases the viscosity of the water, making it more resistant to the needle's weight.

Q4. The accuracy of scientific measurements, especially in sensitive applications like semiconductor fabrication or biological research, often requires precise temperature control. Thermoelectric coolers (Peltier devices) are used for this purpose, utilizing the Peltier effect. The Peltier effect describes the temperature change that occurs when an electric current passes across the junction of two dissimilar conductors. This is a manifestation of:

The Joule effect The Thomson effect The thermoelectric effect The pyroelectric effect

Q5. Thermal pollution refers to the:

Release of hot water into water bodies Increase in atmospheric temperature due to greenhouse gases Discharge of radioactive waste Accumulation of heat in urban areas

Q6. What is the primary source of solar energy?

The Moon The Sun The Earth's Core Ocean Tides

Q7. Which science fiction novel features a time-traveling protagonist named Marty McFly?

The War of the Worlds Back to the Future I, Robot The Left Hand of Darkness

Q8. Animals with a segmented body, a ventral nerve cord, and a closed circulatory system, such as earthworms and leeches, belong to which phylum?

Platyhelminthes Nematoda Mollusca Annelida

Q9. Which of the following is considered the basic unit of evolution?

Individual organism Species Population Gene

Q10. The development of advanced nuclear reactors in India is overseen by which organization?

ISRO DRDO NPCIL BARC

Q11. What is an example of using science in daily life for transportation and travel?

Driving a car Playing video games Walking the dog Doing homework

Q12. The Kyoto Protocol aimed to reduce greenhouse gas emissions. Which of the following is considered a primary greenhouse gas regulated under this protocol?

Sulfur dioxide (SO2) Nitrogen oxides (NOx) Methane (CH4) Carbon monoxide (CO)

Q13. Which element has the highest atomic number?

Uranium Plutonium Neptunium Oganesson

Q14. What is the de Broglie wavelength of an electron accelerated through a potential difference V?

h/(2meV) h/√(2meV) h/√(mev) h/(2meV²)

Q15. What is the function of the rough endoplasmic reticulum?

Lipid synthesis Protein synthesis and modification Waste removal Energy production

Q16. The concept of 'climate sensitivity' refers to:

The speed at which the climate system responds to forcings The degree to which a specific forcing causes a change in global mean temperature The capacity of the climate system to absorb greenhouse gases The resilience of ecosystems to climate change

Q17. India's first dedicated astrophysical observatory for solar studies is named:

GMRT ARIES IAU IUCAA

Q18. What causes the phases of the Moon?

Earth's shadow The Sun's changing position The Moon's changing orbit The changing angle at which we see the Moon illuminated by the Sun

Q19. Which type of energy is harnessed from the heat of the Earth's interior?

Solar energy Wind energy Geothermal energy Tidal energy

Q20. The calibration of scientific instruments and the accuracy of measurements in various fields, from manufacturing to medicine, are critical. The principle of interferometry, which utilizes the constructive and destructive interference of light waves, is employed in highly precise measuring tools. Which optical phenomenon is the *underlying principle* of interferometry?

Diffraction Polarization Superposition of waves Refraction

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