76. Nucleus was discovered by
(a) Neils Bohr (b) J J Thompson
(c) James Chadwick (d)
Rutherford
Answer:(d )
77. Atoms of the same element having same atomic number
but different mass numbers is called
(a) Isomers (b) Isobars
(c) Isotones (d) Isotopes
Answer:( a)
78. The maximum number of electrons that can be accommodated in an
orbital is
(a)2 (b) 6 (c) 10 (d) 14
Answer:(a )
79. Fl is the symbol of
(a) Fluorine (b) Flerovium
(c) Fermium (d) Francium
Answer:( b)
80. Isosters are molecules containing the same number of
(a) protons & neutrons (b)
atoms and electrons
(c) atoms & neutrons (d) electrons & neutrons
Answer:(b )
81. Avogadro’s number is
(a) 6.02x10²⁴ (b) 6.20x10²⁴
(c) 6.02x10²³
(d) 6.20x10²⁴
Answer:( c)
82. 1 amu is defined as the mass equal to 1/12th of the mass
of an atom of
(a) ¹²C (b)¹³C (c) ¹H (d)²H
Answer:( a)
83. Uncertainty Principle is proposed by
(a) de Broglie (b) Bohr
(c) Max Plank (d) Heisnberg
Answer:( d)
84. Water has maximum density at
(a) 0°C (b) 4°C
(c) 100°C (d) 40°C
Answer:(b )
85. H₂O exists as a liquid due to the presence of
(a) Ionic bond (b) London Forces
(c) Hydrogen Bond (d) Co-ordinate bond
Answer:( c)
86. The most abundant element in the human body is
(a) Oxygen (b) Hydrogen
(c) Carbon (d) Nitrogen
Answer:( a)
87. The polymer used to make nonstick utensils is
(a) Freon (b) Teflon
(c) Bakelite (d) Polythene
Answer:( b)
88. An example of a secondary cell is
(a) Dry cell (b) Mercury cell
(c) lead storage cell (d) Both (a) & (b)
Answer:(c )
89. Who proposed the Law of Octaves?
(a) Newlands (b) Dobereiner
(c) Lavoisier (d) Mosely
Answer:(a )
90. Which of the following is known as Slaked Lime?
(a) Calcium Oxide (b) Calcium Carbonate
(c) Calcium Hydroxide (d) Calcium Phosphate
Answer:(c )
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<Previous Page>01, 02, 03, 04, 05, 06, 07 <Next Page>HOME PAGE
PSC GENERAL SCIENCE QUESTIONS AND ANSWERS
1. General Science - Physics
2. General Science Chemistry
3. General Science Biology
4. General Science Zoology
5. General Science Questions and Answers
Related Post
1. PSC CURRENT AFFAIRS-2015 (2000 FACTS)---> Click here
2. PSC PREVIOUS / SOLVED QUESTION PAPERS ---> Click here
3. PSC GENERAL KNOWLEDGE QUESTIONS AND ANSWERS ---> Click here
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