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Q1. What is the chemical formula for water?
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Q2. The analysis of glass fragments to determine their origin often involves comparing properties like refractive index and elemental composition. What technique is commonly used to determine elemental composition?
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Q3. The process of breaking down glucose in the absence of oxygen is called:
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Q4. Which of the following materials is diamagnetic?
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Q5. Consider a desert ecosystem. The process of evapotranspiration is significantly higher in this biome compared to a rainforest. What is the primary limiting factor driving this phenomenon?
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Q6. What is the name given to the proposed invisible matter that accounts for a significant portion of the universe's mass?
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Q7. What does the term 'mass transfer' refer to in chemical engineering?
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Q8. Which spectroscopic technique is used to determine the elemental composition of a sample by analyzing emitted photons?
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Q9. Which gland produces adrenaline?
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Q10. If the pressure of a gas is doubled while the temperature is kept constant, the volume will:
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Q11. What is the chemical formula for common salt?
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Q12. Which muscle is located in the shoulder region?
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Q13. The 'theory of evolution' is most closely associated with which scientist?
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Q14. Which biome is dominated by short grasses and is found in temperate regions?
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Q15. Which hormone promotes the reabsorption of sodium and water by the kidneys, thus regulating blood pressure?
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Q16. If two sound waves with the same amplitude and frequency meet out of phase (180 degrees phase difference), what type of interference occurs?
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Q17. Cloning can be used in agriculture to produce:
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Q18. What is the output of an OR gate if all its inputs are 0?
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Q19. Two rods, one of brass and another of steel, of equal length at 20°C, are heated to 70°C. If the coefficient of linear expansion of brass is 19 x 10⁻⁶ /°C and that of steel is 12 x 10⁻⁶ /°C, what will be the ratio of their increase in lengths?
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Q20. Which theorem states that any two-terminal linear network can be replaced by an equivalent voltage source in series with an equivalent resistance?