Major Competitive Exams

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Q. Which of the following is a common use of phenol? (2022)
  • A. Disinfectant
  • B. Food preservative
  • C. Flavoring agent
  • D. Coloring agent
Q. Which of the following is a common use of polyethylene?
  • A. Insulation for wires
  • B. Packaging materials
  • C. Automobile parts
  • D. Textiles
Q. Which of the following is a common use of polyvinyl chloride (PVC)?
  • A. Food packaging
  • B. Electrical insulation
  • C. Clothing
  • D. Automobile tires
Q. Which of the following is a common use of probiotics? (2023)
  • A. To treat infections
  • B. To improve gut health
  • C. To cause diseases
  • D. To produce antibiotics
Q. Which of the following is a common use of PVC?
  • A. Clothing
  • B. Pipes
  • C. Food packaging
  • D. Adhesives
Q. Which of the following is a common use of silicon?
  • A. Fertilizers
  • B. Semiconductors
  • C. Explosives
  • D. Dyes
Q. Which of the following is a common use of sodium bicarbonate in everyday life?
  • A. Baking
  • B. Cleaning
  • C. Pest control
  • D. All of the above
Q. Which of the following is a common use of sodium bicarbonate? (2023)
  • A. Baking
  • B. Cleaning
  • C. Antacid
  • D. All of the above
Q. Which of the following is a common use of sulfur? (2022)
  • A. Fertilizers
  • B. Explosives
  • C. Rubber production
  • D. All of the above
Q. Which of the following is a common use of transition metals?
  • A. Insulators
  • B. Catalysts
  • C. Noble gases
  • D. Non-metals
Q. Which of the following is a common use of vinegar in households?
  • A. Cleaning agent
  • B. Food preservative
  • C. Flavoring agent
  • D. All of the above
Q. Which of the following is a common use of vinegar?
  • A. Preservative
  • B. Cleaning agent
  • C. Flavoring agent
  • D. All of the above
Q. Which of the following is a common use of yeast in food production? (2019)
  • A. Making cheese
  • B. Making bread
  • C. Making vinegar
  • D. Making yogurt
Q. Which of the following is a common vector used in gene cloning? (2019)
  • A. Plasmids
  • B. Ribosomes
  • C. Chromosomes
  • D. Nucleotides
Q. Which of the following is a common vector used in genetic engineering? (2019)
  • A. Plasmids
  • B. Ribosomes
  • C. Chromosomes
  • D. Nucleotides
Q. Which of the following is a complete protein source?
  • A. Rice
  • B. Beans
  • C. Eggs
  • D. Peanuts
Q. Which of the following is a component of GDP? (2022)
  • A. Consumption
  • B. Investment
  • C. Government Spending
  • D. All of the above
Q. Which of the following is a component of nucleotides?
  • A. Fatty acids
  • B. Amino acids
  • C. Nitrogenous bases
  • D. Monosaccharides
Q. Which of the following is a compound of hydrogen and carbon?
  • A. H2O
  • B. CH4
  • C. NaH
  • D. HCl
Q. Which of the following is a compound sentence? (2023)
  • A. I like tea.
  • B. I like tea and coffee.
  • C. I like tea because it is hot.
  • D. I like tea, but I prefer coffee.
Q. Which of the following is a conductor of electricity? (2021)
  • A. Rubber
  • B. Wood
  • C. Copper
  • D. Glass
Q. Which of the following is a consequence of a trade deficit? (2019)
  • A. Increased foreign investment
  • B. Decreased national debt
  • C. Depreciation of the national currency
  • D. Increased exports
Q. Which of the following is a consequence of acid rain?
  • A. Soil degradation
  • B. Increased biodiversity
  • C. Improved crop yield
  • D. None of the above
Q. Which of the following is a consequence of deforestation? (2020)
  • A. Increased biodiversity
  • B. Soil erosion
  • C. Improved air quality
  • D. Increased rainfall
Q. Which of the following is a consequence of eutrophication in water bodies?
  • A. Increased biodiversity
  • B. Decreased oxygen levels
  • C. Improved water clarity
  • D. Reduced algal growth
Q. Which of the following is a consequence of eutrophication?
  • A. Increased biodiversity
  • B. Decreased oxygen levels
  • C. Improved water clarity
  • D. Reduction of algal blooms
Q. Which of the following is a consequence of global warming?
  • A. Rising sea levels
  • B. Increased ice cover
  • C. Decreased temperatures
  • D. None of the above
Q. Which of the following is a consequence of Lenz's law?
  • A. Induced current opposes the change in magnetic flux
  • B. Induced current enhances the change in magnetic flux
  • C. Induced current is always zero
  • D. Induced current is independent of magnetic field
Q. Which of the following is a consequence of Newton's law of gravitation?
  • A. The orbits of planets are elliptical
  • B. Masses repel each other
  • C. Gravitational force is a vector quantity
  • D. All objects fall at the same rate in a vacuum
Q. Which of the following is a consequence of Raoult's Law in a binary solution?
  • A. The total vapor pressure is the sum of the partial pressures.
  • B. The total vapor pressure is always lower than the vapor pressure of the pure solvent.
  • C. The mole fraction of the solute is always greater than that of the solvent.
  • D. The boiling point of the solution is always higher than that of the pure solvent.
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