Major Competitive Exams

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Q. Which of the following is a characteristic of aromatic hydrocarbons? (2023)
  • A. They are saturated
  • B. They have a pleasant smell
  • C. They are highly reactive
  • D. They contain double bonds only
Q. Which of the following is a characteristic of asexual reproduction? (2019)
  • A. Involves two parents
  • B. Produces genetically identical offspring
  • C. Requires gametes
  • D. Occurs in higher organisms only
Q. Which of the following is a characteristic of bases?
  • A. Taste sour
  • B. Turn litmus red
  • C. Feel slippery
  • D. Release H+ ions
Q. Which of the following is a characteristic of beta decay?
  • A. Emission of alpha particles
  • B. Conversion of a neutron into a proton
  • C. Emission of gamma rays
  • D. No change in atomic number
Q. Which of the following is a characteristic of brittle materials? (2020)
  • A. High ductility
  • B. Low tensile strength
  • C. Low elasticity
  • D. Fracture without significant deformation
Q. Which of the following is a characteristic of bryophytes? (2019)
  • A. Presence of true roots
  • B. Presence of xylem and phloem
  • C. Moist habitats
  • D. All of the above
Q. Which of the following is a characteristic of carbohydrates?
  • A. High energy density
  • B. Soluble in organic solvents
  • C. Hydrophilic nature
  • D. Insoluble in water
Q. Which of the following is a characteristic of cellulose?
  • A. Soluble in water
  • B. Composed of glucose units
  • C. Used for energy storage
  • D. Contains α-1,4 glycosidic bonds
Q. Which of the following is a characteristic of chemisorption?
  • A. Reversible process
  • B. Low heat of adsorption
  • C. Specificity to adsorbate
  • D. Occurs at low temperatures
Q. Which of the following is a characteristic of cis-trans isomers?
  • A. Same connectivity, different spatial arrangement
  • B. Different connectivity
  • C. Same molecular formula, different molecular weight
  • D. Different boiling points only
Q. Which of the following is a characteristic of complete flowers? (2022)
  • A. Lack of sepals
  • B. Presence of both male and female parts
  • C. Only male parts
  • D. Only female parts
Q. Which of the following is a characteristic of composite numbers?
  • A. They have exactly two distinct positive divisors.
  • B. They are greater than 1.
  • C. They cannot be expressed as a product of two smaller natural numbers.
  • D. They are always odd.
Q. Which of the following is a characteristic of covalent compounds? (2019)
  • A. High melting points
  • B. Conduct electricity in solution
  • C. Low melting points
  • D. Brittle
Q. Which of the following is a characteristic of cross-linked polymers? (2023)
  • A. Flexible
  • B. Linear structure
  • C. High melting point
  • D. Low tensile strength
Q. Which of the following is a characteristic of cycloalkanes?
  • A. They are always aromatic
  • B. They have a ring structure
  • C. They are unsaturated
  • D. They contain only single bonds
Q. Which of the following is a characteristic of dicots? (2022)
  • A. Single cotyledon
  • B. Net-like leaf venation
  • C. Scattered vascular bundles
  • D. Fibrous root system
Q. Which of the following is a characteristic of dicotyledons? (2019)
  • A. Two cotyledons
  • B. Parallel venation
  • C. Fibrous root system
  • D. Single flower part
Q. Which of the following is a characteristic of digital communication systems?
  • A. Continuous signal representation
  • B. Higher susceptibility to noise
  • C. Easier encryption and security
  • D. Lower data transmission rates
Q. Which of the following is a characteristic of digital signals?
  • A. Continuous in nature
  • B. Discrete in nature
  • C. More susceptible to noise
  • D. Require more bandwidth than analog signals
Q. Which of the following is a characteristic of elastic materials? (2023)
  • A. They return to original shape after deformation
  • B. They permanently deform
  • C. They break easily
  • D. They are always brittle
Q. Which of the following is a characteristic of elastomers?
  • A. Brittle
  • B. Rigid
  • C. Elastic
  • D. Conductive
Q. Which of the following is a characteristic of enzymes?
  • A. They are consumed in reactions
  • B. They increase the activation energy
  • C. They are specific to substrates
  • D. They function at all temperatures
Q. Which of the following is a characteristic of essential amino acids? (2019)
  • A. Can be synthesized by the body
  • B. Must be obtained from diet
  • C. Are not required for protein synthesis
  • D. Are only found in animal products
Q. Which of the following is a characteristic of essential oils? (2019)
  • A. Water-soluble
  • B. Volatile
  • C. Non-toxic
  • D. All of the above
Q. Which of the following is a characteristic of ethers? (2019)
  • A. Higher boiling point than alcohols
  • B. Lower boiling point than alcohols
  • C. Soluble in water
  • D. Flammable
Q. Which of the following is a characteristic of eukaryotic cells? (2019)
  • A. No nucleus
  • B. Circular DNA
  • C. Membrane-bound organelles
  • D. Binary fission
Q. Which of the following is a characteristic of eukaryotic genes? (2023)
  • A. They are polycistronic
  • B. They contain introns
  • C. They lack regulatory sequences
  • D. They are circular
Q. Which of the following is a characteristic of exponential functions?
  • A. They have a constant rate of change.
  • B. They grow or decay at a constant percentage rate.
  • C. They are always positive.
  • D. They can be represented by a straight line.
Q. Which of the following is a characteristic of fibrous proteins?
  • A. Soluble in water
  • B. Structural role
  • C. Globular shape
  • D. Enzymatic activity
Q. Which of the following is a characteristic of gamma radiation?
  • A. It has mass
  • B. It is positively charged
  • C. It has high penetrating power
  • D. It can be deflected by magnetic fields
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