General-Studies Quiz For FCI Phase I 2022- 31st October

Q1. A ball balanced on a vertical rod is an example of
(a) stable equilibrium
(b) unstable equilibrium
(c) neutral equilibrium
(d) perfect equilibrium
(e) None of the above

Q2. Which one of the following particles has less than 0.002 mm diameter?
(a) Clay
(b) Silt
(c) Fine sand
(d) None of the above
(e) None of the above

Q3. Protons and neutrons are bound in a nucleus by the
(a) short range ‘weak interaction’
(b) short range ‘strong interaction’
(c) long range ‘electromagnetic interaction’
(d) long range ‘gravitational interaction’
(e) None of the above

Q4. Discovery of the nucleus of an atom was due to the experiment carried out by
(a) Bohr
(b) Rutherford
(c) Moseley
(d) Thomson
(e) None of the above

Q5. The atomic orbital is
(a) the circular path of the electron
(b) elliptical shaped orbit
(c) three dimensional field around nucleus
(d) the region in which there is maximum probability of finding electron
(e) None of the above

Q6. Which one of the following is not result of surface tension?
(a) Vapour formation above the liquid surface
(b) Convex shape of liquid meniscus
(c) Liquid rising in a capillary
(d) Spherical shape of mercury fallen on the floor

Q7. In isotopes the number of neutrons are
(a) same
(b) different
(c) both
(d) None of these
(e) None of the above

Q8. Species containing same number of electrons are called
(a) isotopes
(b) isobars
(c) isoelectronic
(d) isotones
(e) None of the above

Q9. The number of protons in a negatively charged atom (anion) is
(a) more than the atomic number of the element
(b) less than the atomic number of the element
(c) more than the number of elecrons in the atom
(d) less than the number of electrons in the atom
(e) None of the above

Q10. Which one of the following statements is not correct?
(a) Weight of a body is different on different planets.
(b) Mass of a body on the earth, on the moon and in empty space is the same.
(c) Weightlessness of a body occurs when the gravitational forces acting on it are counter-balanced.
(d) Weight and mass of a body are equal at sea level on the surface of the earth.
(e) None of the above

Solutions

S1.Ans. (a)
Sol. A ball balanced on a vertical rod is an example of unstable equilibrium.

S2.Ans. (a)
Sol. Clay particles are smaller than 0.002 mm in diameter, slit particles are from 0.002 to 0.05 mm in diameter and sand ranges from 0.05 to 2.0 mm. Particles larger than 0.2 mm are called gravel or stones.

S3.Ans. (b)
Sol. The force between protons and neutrons in the nucleus is short range strong interaction.

S4.Ans. (b)
Sol. Rutherford determined that the particles that made up the gold foil must consist mostly of empty space since most of the alpha particles passed through. However, some regions of the gold must have been too dense to allow the alpha particles through, and this heavy part of the atom was what Rutherford called the nucleus. He concluded that it was the nucleus that held most of the atom’s mass.

S5.Ans. (d)
Sol. An orbital is the area around an atom where the electron (or electrons) are most likely to be. (90-95% probability)

S6.Ans. (c)
Sol. An orbital is the area around an atom where the electron (or electrons) are most likely to be. (90-95% probability)

S7.Ans. (b)
Sol. isotopes have same atomic number (A) but different atomic mass (Z). Hence the value of neutrons (Z-A) will be different.

S8.Ans. (c)
Sol. Species containing same number of electrons are called Isoelectronics. Isobars have same atomic mass but different atomic number. Isobars are elements having the same numbers of neutrons.

S9.Ans. (d)
Sol. In case of a neutral atom Number of protons = Number of electrons Anion is formed by gain of electron (s) by a neutral atom. Thus in case of anion. Number of electrons > Number of protons.

S10.Ans. (d)
Sol. Mass is the quantity of matter contained by the object. Weight is the force of gravity acting on a body. Mass is constant anywhere in the universe but weight depends upon the quantity of gravity in a particular place.