Chemistry GK Question

Q76. "Paramagnetism" is the property of
(a) Paired electrons
(b) Completely filled electronics subshells
(c) Unpaired electrons
(d) Completely vacant electronic subshells

Q77. The elements in the modern Periodic table are arranged according to their
(a) Mass number
(b) Neutron number
(c) Atomic number
(d) Atomic Weight

Q78. The structure of (HPO₃)₃ is
(a) Linear
(b) Tetrahedral
(c) Cyclic
(d) Octahedral

Q79. Which of the following elements is found in all organic compounds
(a) Carbon
(b) Calcium
(c) Nitrogen
(d) Oxygen

Q80. The aqueous solution of potassium chloride is
(a) a weak electrolyte
(b) a strong electrolyte
(c) a non-electrolyte
(d) initially weak and then become a strong electrolyte

Q81. The compounds formed when hydrogen combines with p-block elements are called
(a) Ionic hydrides
(b) Molecular hydrides
(c) Metallic hydrides
(d) Polynuclear hydrides

Q82. Aqueous solution of which of the following is a good conductor of electricity
(a) Ammonium acetate
(b) Glucose
(c) Ammonia
(d) Acetic acid

Q83. The laws of electrolysis are given by
(a) Ostwald
(b) Faraday
(c) Arrhenius
(d) Lewis

Q84. How many electrons can be accommodated in d-orbital
(a) 3
(b) 6
(c) 8
(d) 10

Q85. All isotopes of the same element have ______________
(a) different atomic numbers and different atomic mass
(b) different atomic numbers and the same atomic mass
(c) the same atomic number but different atomic masses
(d) the same atomic number and the atomic mass

Q86. Periodic table contains how many groups
(a) 16
(b) 17
(c) 18
(d) 19

Q87. Periodic table contains how many periods
(a) 6
(b) 7
(c) 8
(d) 10

Q88. The transuranium elements are the chemical elements with atomic numbers greater than
(a) 86
(b) 89
(c) 92
(d) 96

Q89. Which one of the following species has the highest bond order, shortest bond length and maximum bond strength
(a) O₂
(b) O⁺₂
(c) O^-₂
(d) O^-2₂

Q90. Which of the following methods is used in determining the number average molar mass of a macromolecule
(a) Viscosity
(b) Osmotic pressure
(c) Sedimentation equilibrium
(d) Light scattering

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